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  • Determination of magnetoelastic parameters in magnetic thin films from FMR spectra

    Creator:
    Masood, Khalid I.
    Abstract:
    The ferromagnetic resonance (FMR) phenomenon serves as a sensitive probe of the effective internal fields in a magnetic material. FMR spectroscopy has consequently become a well-established technique, extensively employed in assessing material properties such as magnetic anisotropy, Landé g-factor, damping parameter, and the magnetoelastic constants of magnetic materials. Determining these...
    Resource Type:
    Dissertation
    Full Text:
    Abstract approved: Albrecht Jander The ferromagnetic resonance (FMR) phenomenon serves as a sensitive

  • Modeling spintronics devices in Verilog-A for use with industry-standard simulation tools

    Creator:
    Engelbrecht, Linda M.
    Abstract:
    As the semiconductor industry works to integrate increasingly more "non-CMOS" devices onto CMOS ICs, compact model development has become an important step in the circuit/system verification tool flow. This research focuses on the two- and three-dimensional modeling of the physical phenomena that occur in nanoscale magnetic devices. This includes the...
    Resource Type:
    Dissertation
    Full Text:
    a strange and wonderful subject, but not an easy one to grasp. I would like to thank Dr. Albrecht

  • Electrically tunable thin-film inductors based on synthetic antiferromagnet cores

    Creator:
    An, Na
    Abstract:
    The objective of this research is to demonstrate the feasibility of implementing electrically tunable on-chip inductors based on synthetic antiferromagnet (SAF) cores. This thin film magnetic core is made of a magnetic bi-layer antiferromagnetically coupled through a nonmagnetic spacer layer. An energy model is developed to investigate the magnetic behavior...
    Resource Type:
    Masters Thesis
    Full Text:
    etching Ru . . . . . . . . . . . . . . . . 56 A.1.2.2 Recipe B for etching NiFe

  • Field-Free Precessional Magnetization Switching by Focused Surface Acoustic Waves

    Creator:
    Lin, Han-Ting
    Abstract:
    In this research, the possibility of the precessional magnetization switching by focused surface acoustic waves, without external magnetic field, has been demonstrated. The technique of generating an effective magnetic field by applying stress to a magnetostrictive material via a surface acoustic wave is applied to perform field-free magnetization switching. It...
    Resource Type:
    Masters Thesis
    Full Text:
    2.7 (a) Phase velocity plot in polar form. (b) Phase velocity plot in XY coordinate

  • Modeling, Fabrication, and Characterization of Magnetic Thin Films for Integrated Inductor and MRAM Applications

    Creator:
    Buford, Benjamin
    Abstract:
    Magnetic thin films have potential to improve devices such as on-chip inductors, and enable new technologies such as magnetic random access memory (MRAM). The use of magnetic cores in on-chip inductors is typically limited to applications well under 1 GHz. At higher frequencies, the performance of the magnetic core is...
    Resource Type:
    Dissertation
    Full Text:
    Albrecht Jander and Pallavi Dhagat for giving me a lab to play in, and a wide variety of interesting

  • Radiation tolerance of magnetic tunnel junctions with MgO barriers

    Creator:
    Ren, Fanghui
    Abstract:
    In the next decade, technology trends--smaller dimension, lower voltage, higher operating frequency--introduce new technical considerations and challenges for radiation effects in integrated circuits. Semiconductor based circuits and traditional dynamic random-access memories will malfunction when exposed to extreme environments, such as space and nuclear reactor. The mechanisms for radiation effect are...
    Resource Type:
    Masters Thesis
    Full Text:
    , 1988]. Left panel Fe/Cr/Fe shows the sandwich structure. Right panel shows (a) and (b) the hysteresis

  • Electrical characterization of thermally reduced graphite oxide

    Creator:
    Jewell, Ira
    Abstract:
    This thesis describes the transport properties observed in thermally treated graphite oxide (GO), which holds promise as an economical route to obtaining graphene. Graphene is a material consisting of a single atomic plane of carbon atoms and was first isolated as recently as 2004. Several isolation techniques have been investigated,...
    Resource Type:
    Masters Thesis
    Full Text:
    . sample 2 - a.)3D AFM image. b.)optical image. c.)AFM image. d.)height profile

  • Implementation of an ultra-wideband transceiver for sensor applications

    Creator:
    Jann, Benjamin J.
    Abstract:
    Ultra-wideband (UWB) radio is the transmission of data using an extremely wide bandwidth and very low power spectral density. In this thesis, the mereits and challenges of UWB architectures versus conventional narrowband architectures will be compared. Pulsed UWB systems can be implemented with very simple architectures. These advantages make UWB...
    Resource Type:
    Masters Thesis
    Full Text:
    powered applications where a high bit rate is still needed. A prototype transceiver for a radio

  • Design techniques for radiation hardened-phase locked loops

    Creator:
    Nemmani, Anantha Nag
    Abstract:
    Spacecrafts experience radiation in the course of their operation and all electronic equipment on board these spacecrafts has to be designed to withstand the effects of this radiation. This thesis describes the effects of total ionization dose (TID) and single event transients (SET) in phase-locked loops - an important circuit...
    Resource Type:
    Masters Thesis
    Full Text:
    ) Ioniza- tion following a heavy ion strike, (b) Electrons drift and holes remain, (c) Holes drift towards

  • Characterizing spin-orbit torques in β-W/Ta/CoFeB/MgO devices

    Creator:
    Allen, Shane R.
    Abstract:
    Materials with a strong spin Hall effect and Rashba-Edelstein effect have the potential to improve the efficiency of solid-state magnetic memory technologies and other magnetic logic devices. Heavy metals have been identified as having these properties, including the beta crystal phase of tungsten. In this work, we determine the strength...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________________________ Pallavi Dhagat Materials with a strong spin Hall effect and Rashba-Edelstein effect have

  • A Micro Scale Magnetic Particle Imaging System

    Creator:
    Lenox, Philip A.
    Abstract:
    Magnetic particle imaging (MPI) is a biomedical imaging technique which detects the presence of magnetic nanoparticles which have been introduced into the specimen prior to imaging. MPI has shown promise for real-time imaging with spatial resolution comparable to magnetic resonance imaging (MRI). MPI research has focused predominantly on the development...
    Resource Type:
    Masters Thesis
    Full Text:
    is applied using a transmit coil, shown in Figure 1.7 in silver. b) Located in the FFR, the

  • A Microwave Signal Correlator Based on Parametric Pumping of Spin Waves

    Creator:
    Hansen, Mikkel N.
    Abstract:
    This work demonstrates correlation of microwave signals encoded with 16-bit codes using the parametric interaction of spin waves. Signal processing correlators are devices that compare two signals, such as a reference code and a received code, where the output indicates the similarity between the signals. Correlators are used in communication...
    Resource Type:
    Masters Thesis
    Full Text:
    . . . . . . . . . . . . . . . . . . . . 41 5 Conclusion 42 Bibliography 43 A Operating Ranges 46 B PCB Parameters 48 C Experimental

  • Fabrication and characterization of thin-film transistor materials and devices

    Creator:
    Hong, David
    Abstract:
    A class of inorganic thin-film transistor (TFT) semiconductor materials has emerged involving oxides composed of post-transitional cations with (n-1)d¹⁰ns⁰ (n≥4) electronic configurations. This thesis is devoted to the pursuit of topics involving the development of these materials for TFT applications: Deposition of zinc oxide and zinc tin oxide semiconductor layers...
    Resource Type:
    Dissertation
    Full Text:
    , including (a) fully-transparent thin-film transistor and (b) non-transparent thin- film transistor

  • Noise coupling techniques in multi-cell delta-sigma modulators

    Creator:
    Bonu, Madhulatha
    Abstract:
    High performance multi-cell delta-sigma modulators are a preferred choice in applications which require programmability. Multi-cell delta-sigma modulators with M unit cells provide 10log10(M) SQNR improvement for the same thermal noise and bias power due to the uncorrelated quantization noises of the M unit ADCs. This concept is used in this...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ Gabor C. Temes High performance multi-cell delta-sigma modulators are a preferred choice

  • Electrical recommendations and formulas for metal fill in radio-frequency integrated circuits

    Creator:
    Gaskill, Steven
    Abstract:
    With increasing transistor operating frequencies, interconnects and passive devices are becoming performance limiters in integrated circuit (IC) designs. To combat this, the interconnect layers above the active silicon are trending toward low-κ dielectrics and Cu metallization. The use of these new materials has popularized chemical mechanical polishing (CMP) to planarize...
    Resource Type:
    Masters Thesis
    Full Text:
    Different metal fill shapes and tiling patterns: (a) Rectangular, (b) Diamond-Shaped, (c) Doughnut-Shaped

  • Magnetically programmable surface acoustic wave devices for RFID applications

    Creator:
    Chin, Matthew
    Abstract:
    Magnetically programmable surface acoustic wave (MP SAW) devices were designed, fabricated and characterized in this thesis using integrated giant magnetoresistive (GMR) bits with interdigital reflectors. This provides a proof of concept of a novel storage element on radio frequency identification tags. Interdigital transducers (IDTs) on a piezoelectric substrate are used...
    Resource Type:
    Masters Thesis
    Full Text:
    Appendices 124 A OSU Fabrication Process Details . . . . . . . . . . . . . . . . . . . . 125 B ARL

  • On-chip crosstalk suppression schemes using magnetic films for RF/microwave applications

    Creator:
    Sligar, Arien
    Abstract:
    The primary objective of the thesis research is to study novel schemes of on-chip crosstalk suppression employing magnetic films at microwave frequencies. Since extraction of various material properties of the magnetic films is essential for successful application of the proposed method, the research also involves development of a new material...
    Resource Type:
    Masters Thesis
    Full Text:
    the proposed method, the research also involves development of a new material characterization

  • Designing bulk acoustic wave resonators for parametric amplification of spin waves

    Creator:
    Chowdhury, Pratim
    Abstract:
    Spintronics is an emerging field of research dealing with devices that can potentially exploit the additional degree of freedom provided by the electron spin along with or instead of the conventional electronic charge. One of the most promising aspects of spintronics is the potential use of magnetostatic spin waves as...
    Resource Type:
    Masters Thesis
    Full Text:
    3.8 Resonator A and resonator B are identical except for one uses aluminium and the other uses gold

  • Massive MIMO Channel Characterization

    Creator:
    Assiri, Mohammad
    Abstract:
    It has been estimated that data traffic from the different mobile devices that range from smartphones to machine-to-machine (M2M) devices will exceed 15.9 exabyte per month by the year 2018. With this immense data growth, the current wireless communication systems suffer from the scarcity of the radio spectrum and eventually...
    Resource Type:
    Masters Thesis
    Full Text:
    FIGURES Figure Page 1.1 Cellular coverage examples (a)hexagonal cell shape(nonrealistic) (b) realistic

  • A dual-path 2-0 MASH ADC with dual digital error correction

    Creator:
    Zhang, Zhenyong
    Abstract:
    This dissertation presents a dual-path 2-0 MASH (Multi-stAge-noise -SHaping) ADC with two verified digital corrections of DAC mismatch error and quantization noise leakage. By using these two techniques, the requirements for the analog circuits are greatly relaxed. The dual-path structure generates two outputs, one only composed of conversion errors, the...
    Resource Type:
    Dissertation
    Full Text:
    .2-5. In the ideal case, proper selection of a, b and integrator gains can make NTF exactly same as

  • Assessment of High Mobility Oxide Thin-Film Transistors

    Creator:
    Stewart, Kevin A.
    Abstract:
    The trend towards higher resolution, faster refresh rate active-matrix liquid-crystal displays (AMLCDs) as well as the emergence of active-matrix organic light-emitting diode (AMOLED) displays is driving the demand for amorphous oxide semiconductor thin-film transistors (AOS TFTs) with higher mobility. A physics-based model for carrier transport in an amorphous semiconductor is...
    Resource Type:
    Dissertation
    Full Text:
    in (a) equilibrium when no bias is applied, (b) accumulation when a positive bias is applied, and (c

  • Al-In-Sn-O thin-film transistors

    Creator:
    Stewart, Kevin A.
    Abstract:
    The aim of the research undertaken for this thesis was to develop a new high-performance amorphous oxide semiconductor (AOS) for use as a channel layer in a thin-film transistor (TFT). AOS TFTs offer higher electron mobility than the established amorphous silicon based technology. A new channel material comprised of aluminum...
    Resource Type:
    Masters Thesis
    Full Text:
    flat-band (ideally), (b) depleted when a negative bias is applied, and (c) is accumulated when a

  • Design techniques for low-power multi-GS/s analog-to-digital converters

    Creator:
    Jiang, Tao
    Abstract:
    Ultra-high-speed (>10GS/s), medium-resolution (5~6bit), low-power (<50mW) analog-to-digital converter can find it application in the areas of digital oscilloscopes and next-generation serial link receivers. There are several challenges to enable a successful design, however. First, the time-interleaved architecture is required in order to achieve over 10GS/s sampling rate, with the trade-off...
    Resource Type:
    Dissertation
    Full Text:
    previous work of sub-ADC, a 12-GS/s 5-b 50-mW ADC is designed in 40nm CMOS with 8 time-interleaved

  • Low-power double-sampled delta-sigma modulator for broadband applications

    Creator:
    Shen, Weilun
    Abstract:
    High speed and high resolution analog-to-digital converter is a key building block for broadband wireless communications, high definition video applications, medical images and so on. By leveraging the down scaling of the latest CMOS technology and the noise shaping properties, delta-sigma (ΔΣ) ADCs are able to achieve wide-band operation and...
    Resource Type:
    Dissertation
    Full Text:
    . Buter, H. van der Ploeg, M. Vertregt, G.J.G.M. Geelen and E.J.F. Paulus, “A 1.2-V 250-mW 14-b 100-MS/s

  • Ring amplification for switched capacitor circuits

    Creator:
    Hershberg, Benjamin Poris
    Abstract:
    A comprehensive and scalable solution for high-performance switched capacitor amplification is presented. Central to this discussion is the concept of ring amplification. A ring amplifier is a small modular amplifier derived from a ring oscillator that naturally embodies all the essential elements of scalability. It can amplify with accurate rail-to-rail...
    Resource Type:
    Dissertation
    Full Text:
    everything from cascode current sources to Salacious B. Crumb are something that will always be a

  • Printing 3D Magnetic Composite Structures with Arbitrary Anisotropy using UV-curable Magnetic Ink

    Creator:
    Clay, Garrett
    Abstract:
    Inkjet printing offers a cost effective, highly customizable method for rapid manufacturing of functional devices with minimal material waste. Although this method has been used for a variety of composites, little work has been done in the area of 3D printing magnetic composites. Presented here is a process for inkjet...
    Resource Type:
    Masters Thesis
    Full Text:
    and Dr. Albrecht Jander for giving me the tremendous opportunity to be a part of the OSU Applied

  • Investigation of ultra-thin In-Ga-Zn-O thin-film transistors

    Creator:
    Chiang, Tsung-Han
    Abstract:
    The objective of the work reported herein is to explore the impact of decreasing channel thickness on radio-frequency (RF) sputtered amorphous indium-gallium-zinc oxide (a-IGZO) thin-film transistors (TFTs) electrical performance through the evaluation of drain current versus gate voltage (I[subscript D] − V[subscript G]) transfer curves. For a fixed set of...
    Resource Type:
    Masters Thesis
    Full Text:
    Appendices 52 A Shadow Mask Specifications . . . . . . . . . . . . . . . . . . . . . . . . 53 B Mobility

  • Equivalent circuit modeling of on-chip magnetic devices based on terminal measurements

    Creator:
    Gaskill, Steven G.
    Abstract:
    The addition of thin-film alloy magnetic materials to integrated circuit processing enables a number of novel monolithic circuits. Examples include fully integrated magnetic field sensors, signal and power galvanic isolation circuits, and power supplies on chip (PwrSoC). There are several benefits to integrating these traditionally off-chip devices, including improved manufacturability,...
    Resource Type:
    Dissertation
    Full Text:
    181 Appendices 198 LIST OF FIGURES Figure Page 1.1 Top down view (a), perspective view (b), and

  • Development of oxide semiconductors : materials, devices, and integration

    Creator:
    Chiang, Hai Q.
    Abstract:
    The aim of this dissertation is to develop oxide semiconductors by radio-frequency sputtering for thin-film transistor (TFT) applications. A variety of oxide semiconductors are used as the TFT channel layer, including indium gallium oxide (IGO), zinc tin oxide (ZTO), and indium gallium zinc oxide (IGZO). The variety of materials used...
    Resource Type:
    Dissertation
    Full Text:
    banddiagrams for a device with an accumulated channel where the appliedVDS is (a) small and (b) large. The

  • Energy-efficient, short-range ultra-wideband radio transceivers

    Creator:
    Hu, Changhui
    Abstract:
    Short-range wireless communications continually attract interest from both industry and academia, and it is changing our life in every aspect in the last decade. The design of wireless transceivers is the bottleneck for variety applications, due to RF modeling inaccuracy, stringent FCC regulations over the transmitted power spectrum, interference, multi-path...
    Resource Type:
    Dissertation
    Full Text:
    Phase shifter: (a) Simplified schematic: (b) Phase shifter opera- tion; (c) Phase shifter simulation

  • High efficiency delta-sigma modulation data converters

    Creator:
    Lee, Kyehyung
    Abstract:
    Enabled by continued device scaling in CMOS technology, more and more functions that were previously realized in separate chips are getting integrated on a single chip nowadays. Integration on silicon has opened the door to new portable wireless applications, and initiated a widespread use of these devices in our common...
    Resource Type:
    Dissertation
    Full Text:
    a NCTI modulator. (b) Comparison of the NTF enhancement factors for various split modulators

  • Parametric Pumping of Spin Waves Using Acoustic Waves

    Creator:
    Chowdhury, Pratim
    Abstract:
    Spintronics is an emerging field of research wherein the electron spin instead of, or along with, the conventional electron charge may be utilized in developing next generation logic devices. One of the most promising aspects of spintronics is that information transfer may be achieved by spin waves in logic devices,...
    Resource Type:
    Dissertation
    Full Text:
    Appendices 90 A Instrumentation and experimental conditions . . . . . . . . . . . . . . . . . . . . 91 B

  • Acoustically Assisted Magnetic Recording

    Creator:
    Li, Weiyang
    Abstract:
    In the past few decades, magnetic recording has been used as a dominant solution for massive data storage due to its large capacity, excellent reliability and low cost. Nowadays, exponentially increasing user-generated information is creating a huge demand as well as great challenges for high density data storage solutions. For...
    Resource Type:
    Dissertation
    Full Text:
    with her is always rewarding. Second, I want to thank my co-adviser Dr. Albrecht Jander. He is a

  • Enabling metal-fill-aware design of integrated circuits

    Creator:
    Shilimkar, Vikas S.
    Abstract:
    In advanced integrated circuit (IC) processes, the metal fill inserted to meet foundry imposed density requirements degrades the performance of interconnects and passive components which ultimately affects the overall circuit performance. Accounting for this degradation through electromagnetic and equivalent circuit modeling is becoming a critical aspect of IC design. However,...
    Resource Type:
    Dissertation
    Full Text:
    . . . . . . 167 A.8 All modes consideration for the periodic structure (based on [102]). . . . . . . . 168 B.1

  • 1/f noise of GaAs resistors on semi-insulating substrates, and 1/f noise due to temperature fluctuations in heat conduction

    Creator:
    Choi, Mun-Seork
    Abstract:
    This research work focuses on the mechanism of 1/f noise in GaAs resistors on semi-insulating substrates and 1/f noise due to temperature fluctuations in heat conduction in resistors, diodes, and bipolar transistors. The goal of this research is to generate accurate models to explain physical origin of 1/f noise in...
    Resource Type:
    Dissertation
    Full Text:
    0V # of Cells Threshold voltage of Cells0V ‘C’ ‘D’ ‘E’ ‘F’‘B’‘A’‘3’ ‘4’ ‘5’ ‘6’‘2’‘1’‘0’4 Bits (16

  • Multi-antenna OFDM systems in the presence of phase noise and doubly-selective fading

    Creator:
    Zhang, Yu
    Abstract:
    Orthogonal frequency division multiplexing (OFDM), which has been very attractive for future high rate wireless communications, is very robust to channel multipath fading effect while providing high transmission data rate with high spectral efficiency. Multiple antennas can be combined with OFDM to increase diversity gain and to improve spectral efficiency...
    Resource Type:
    Dissertation
    Full Text:
    matrix H(l) can be written in a general form as [33] H(l) = D1/2Hw(l)B 1/2, l = 0, · · · , L−1 (2.8

  • Efficient VLSI architectures for MIMO and cryptography systems

    Creator:
    Li, Qingwei
    Abstract:
    Multiple-input multiple-output (MIMO) communication systems have recently been considered as one of the most significant technology breakthroughs for modern wireless communications, due to the higher spectral efficiency and improved link reliability. The sphere decoding algorithm (SDA) has been widely used for maximum likelihood (ML) detection in MIMO systems. It is...
    Resource Type:
    Dissertation
    Full Text:
    ................................................................................................94 8.4. (a). Conventional processing scheme for the Duursma-Lee algorithm. (b) Overlapped

  • Fabrication process assessment and negative bias illumination stress study of IGZO and ZTO TFTs

    Creator:
    Hoshino, Ken
    Abstract:
    Indium-gallium-zinc oxide (IGZO) and zinc-tin oxide (ZTO) are investigated for thin-film transistor (TFT) applications. Negative bias illumination stress (NBIS) is employed for electrical stability assessment. Unpassivated IGZO and ZTO TFTs suffer from severe NBIS instabilities. Zinc-tin-silicon oxide is found to be an effective passivation layer for IGZO and ZTO TFTs,...
    Resource Type:
    Dissertation
    Full Text:
    ...................................................................4 2.2 A simplified illustration of a long-channel MOSFET. (a) A cross-sectional view and (b

  • IC-Antenna Co-Integration for Efficient and Scalable Millimeter-Wave Antenna Interfaces

    Creator:
    Liu,Yao
    Abstract:
    Millimeter-wave (mm-wave) technology promises high speed, high system capacity and low latency interconnects with reduced cost. Applications like high data-rate wireless links, next generation automotive sensors and security body scanners highly depend on mm-wave technology innovations. As operating frequency moves to higher mm-wave bands, shrinking antenna dimensions enable co-integration of...
    Resource Type:
    Dissertation
    Full Text:
    . 2.1): (a) the digital baseband performing digital signal processing, (b) the mixed-signal block

  • A model of the likelihood of stimulation or tolerance of the B lymphocyte

    Creator:
    Peterson, Patricia A.
    Abstract:
    The B lymphocyte is the immune cell responsible for the production of antibodies. It has receptor molecules on its surface which bind to a molecule known as an antigen. The antigen either stimulates the cell to produce antibodies or tolerizes it so that it is unable to produce antibodies. It...
    Resource Type:
    Masters Thesis
    Full Text:
    with current immunological theory. A Model of the Likelihood of Stimulation or Tolerance of the B

  • Accurate and efficient simulation of synchronous digital switching noise in system on a chip

    Creator:
    Habal, Husni
    Abstract:
    A new method is presented to compress switching information in large digital circuits. This is combined with an efficient approach of generating the noise signatures of cells in a digital library that results in an accurate and efficient approach for estimating the noise generated in digital circuits. This method provides...
    Resource Type:
    Masters Thesis
    Full Text:
    ................................................................................ 38 A-2. (a) Ideal inverter and (b) inverter with junction capacitance to the substrate and (c

  • Substrate noise coupling analysis in 0.18um silicon germanium (SiGe) and silicon on insulator (SOI) processes

    Creator:
    Pham, Hui En
    Abstract:
    Analysis of substrate noise coupling has been performed for a 0.18¹m lightly doped silicon germanium BiCMOS process. Techniques to minimize noise coupling in the chip and board design are presented, as well as methods for accurate modeling for substrate noise coupling simulations. Measurements from a test chip were taken to...
    Resource Type:
    Masters Thesis
    Full Text:
    2.1 Lumped substrate model. (a) p+ to p+ model. (b) n+ to p+ model. . 4 2.2 Typical cross-section of

  • Energy efficient communication across on-chip wires in digital CMOS

    Creator:
    Postman, Jacob
    Abstract:
    For the past half century, CMOS process scaling has followed Moore's law, approximately doubling transistor density every 18 months. While locally routed wires have generally scaled with transistor size, longer wires have scaled at a slower rate and in some cases have grown larger as chip size and complexity have...
    Resource Type:
    Dissertation
    Full Text:
    versus a baseline NoC and ideal communi- cation. (a) Ideal communication; (b) Baseline NoC; and (c) SWIFT

  • The Architecture of a Reusable Built-In Self-Test for Link Training, IO and Memory Defect Detection and Auto Repair on 14nm Intel SOC

    Creator:
    Querbach, Bruce
    Abstract:
    The complexity of designing and testing today's system on chip (SOC) is increasing due to greater integrated circuit (IC) density and higher IO and memory frequencies. SOCs for the mobile phone and tablet market have the unique challenge of short product development windows, at times less than six months, and...
    Resource Type:
    Dissertation
    Full Text:
    6.4T/S 19 DRAM ORGANIZATION 20 ADJACENT NEIGHBORHOOD OF A MEMORY CELL B 21 DRAM FAULT SIMULATION

  • Power efficient H.264 video decoding in embedded multiprocessor

    Creator:
    Kim, Jihong
    Abstract:
    This thesis presents a novel methodology that enables power efficient video decoding in an embedded system based on MPSoC (Multiprocessor System on Chip). This methodology is a physical combination of parallel processing which reduces power consumption of processors by exploiting thread-level parallelism and Dynamic Voltage Frequency Scaling (DVFS) that allows...
    Resource Type:
    Masters Thesis
    Full Text:
    rounding of the two nearest samples at integer- and half-sample position as follows: ! a = (G + b +1

  • A Multiresolution Analysis of Temporal Logic

    Creator:
    Pelphrey, Richard E.
    Abstract:
    Is it possible to determine whether a signal violates a formula in Signal Temporal Logic (STL), if the monitor only has access to a low-resolution version of the signal? We answer this question affirmatively by demonstrating that temporal logic has a multiresolution structure, which parallels the multiresolution structure of signals....
    Resource Type:
    Masters Thesis
    Full Text:
    . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 5.2 Monitoring x−1 in which a violation is found in plots (b) and (c). . . . . . 27 5.3

  • A DC-DC converter architecture for low-power, high-resistance thermoelectric generators for use in body-powered designs

    Creator:
    Miller, Brian A.
    Abstract:
    This thesis presents a low power DC-DC converter suitable for harvesting energy from high impedance thermoelectric generators (TEGs) for the use in body powered electronics. The chip has been fabricated in a 130nm CMOS technology. To meet the power demands of body powered networks, a novel dual-path architecture capable of...
    Resource Type:
    Masters Thesis
    Full Text:
    architectures. (a) Two converter architecture. (b

  • Foreground signature extraction for a non-linear hyperspectral mixing model

    Creator:
    Hollis, Jarrod
    Abstract:
    Hyperspectral images consist of intensity measurements associated with a large number of EM wavelengths per pixel. When a pixel contains a single material, the measurements of the pixel match the spectral signature of the material. When multiple materials are present in a single pixel, spectral mixing occurs, and signatures of...
    Resource Type:
    Masters Thesis
    Full Text:
    within a single pixel, the measurement is a mixture of several signatures. 2 (a) (b) (c) (d) (e) (f

  • Development and Implementation of JetNet : A Decentralized Wireless Sensing Protocol

    Creator:
    Goins, Justin B.
    Abstract:
    Modern sensor network applications are often implemented wirelessly in order to lessen installation costs and reduce deployment times. Unfortunately, these wireless sensor network (WSN) nodes must often rely on batteries or energy harvesting techniques in order to sustain their operation and supply the power needed to maintain communication within the...
    Resource Type:
    Dissertation
    Full Text:
    : a Decentralized Wireless Sensing Protocol by Justin B. Goins A DISSERTATION submitted to Oregon

  • A text display node for a control oriented local area network

    Creator:
    Ji, De
    Abstract:
    In recent years, integrated circuit technology has spawned the development of many low cost and high performance microprocessors and microcontrollers. With these devices, there is an increasing interest in the implementation of distributed control networks, utilizing microprocessors in the control nodes. In this work, a low-cost liquid crystal display (LCD)...
    Resource Type:
    Masters Thesis
    Full Text:
    . display control. a) On-line text display, b) clear display, c) display on (enable), d) display off

  • A direct-drive wave energy converter with contactless force transmission system

    Creator:
    Agamloh, Emmanuel B.
    Abstract:
    Commonly proposed ocean wave energy converters (OWEC) use inefficient and maintenance demanding intermediate hydraulic and pneumatic systems. We propose a novel rotary direct-drive OWEC that eliminates these intermediate stages. The new device employs a contactless force transmission system (CFTS) comprising a “piston” and a “cylinder” and a ball screw to...
    Resource Type:
    Dissertation
    Full Text:
    A Direct-Drive Wave Energy Converter with Contactless Force Transmission System by Emmanuel B

  • Design and Development of a Low-Cost, High Resolution, High Mobility Acceleration Data Logger

    Creator:
    Goins, Justin B.
    Abstract:
    To understand the forces exerted on structures during tsunamis, model cities are subjected to human-generated tsunamis. The study of vertical evacuation, wherein individuals could take refuge in the upper levels of strong buildings, has resulted in a growing need for a low cost wireless acceleration data logger. Such a device...
    Resource Type:
    Honors College Thesis
    Full Text:
    B. Goins May 28, 2010 All Rights Reserved Design and Development of a Low

  • Designing for the Future : A Generalized Software Architecture for Virtual Labs

    Creator:
    Thompson, Kyle B.
    Abstract:
    In recent years, simulated laboratory experiences have become more prevalent in educational curricula. These simulations, called virtual labs, can enable learning in ways that are not limited by physical constraints. The development of virtual labs is often ad hoc, resulting in unnecessary, repetitive work. The purpose of this thesis is...
    Resource Type:
    Honors College Thesis
    Full Text:
    Kyle B. Thompson May 22, 2014 All Rights Reserved Designing for the Future: A

  • Design of a solar powered high-pressure steam generator

    Creator:
    Cordy, Clifford B., 1938-
    Abstract:
    The design of a point focus, distributed receiver solar power system is presented. It is shown that a two axis concentrator, with a two axis solar tracker and drive, has significant advantages over other possible optical systems. It is further shown that each concentrator should have its own optical receiver...
    Resource Type:
    Dissertation
    Full Text:
    density in a conventional array is about 13%. Redacted for Privacy c Copyright by Clifford B. Cordy

  • Correlated level shifting as a power-saving method to reduce the effects of finite DC gain and signal swing in opamps

    Creator:
    Gregoire, B. Robert
    Abstract:
    This thesis presents methods to reduce the effects of finite opamp DC gain, output voltage swing limitations in opamps, and component mismatches. The primary contribution of this thesis is a new switched-capacitor method named correlated level shifting (CLS). CLS enables true rail-to-rail operation by storing an estimate of the desired...
    Resource Type:
    Dissertation
    Full Text:
    by B. Robert Gregoire A THESIS submitted to Oregon State University

  • Evaluating the seismic risk and resilience of an electrical power system

    Creator:
    Chalishazar, Vishvas H.
    Abstract:
    The Pacific Northwest is part of the "Ring of Fire," which is well-known for heavy seismic activity. Numerous active faults in the area have encouraged electric grid managers in the region to more deeply contemplate and proactively intervene to support grid resilience. This research introduces Monte Carlo (MC) based power...
    Resource Type:
    Dissertation
    Full Text:
    Breaker Type Configuration, (B) Ring Bus Configurations, (C) Breaker and a Half Type Configuration and

  • Dynamic Composite Load Signature Detection and Classification using Supervised Learning over Disturbance Data

    Creator:
    Tray, Kelly
    Abstract:
    Load modeling that can accurately represent the dynamic behavior of generators and loads is important in the operation and planning of transmission and distribution systems. Yet, it is a complex subject in power system research communities and electric utilities. The composition of the end-use loads is changing continually based on...
    Resource Type:
    Masters Thesis
    Full Text:
    Appendices 54 A Default WECC Composite Load Model Data . . . . . . . . . . . . . . . . . 55 B Load Model

  • Design techniques for high efficiency high current LED drivers

    Creator:
    Rao, Sachin B.
    Abstract:
    Solid-state based lighting offers a number of advantages such as long life, high efficiency and compactness compared to a conventional halogen tube based lighting. Due to these advantages they are being increasingly used in a variety of lighting applications including portable devices, home, and automotive lighting. Consequently, there has been...
    Resource Type:
    Masters Thesis
    Full Text:
    High Current LED Drivers by Sachin B Rao A THESIS submitted to Oregon State University in partial

  • High speed analog circuit design using the heterostructure insulated gate field effect transistor

    Creator:
    Smith, Alexander B.
    Abstract:
    As Si MOS approaches its maximum limits in speed and bandwidth, new devices are desired to meet the needs of high speed communications and signal processing. A device that exhibits superior performance to Si MOS, BJT, and GaAs technology is the HEMT (high electron mobility transistor). The HEMT offers superior...
    Resource Type:
    Masters Thesis
    Full Text:
    using the Heterostructure Insulated Gate Field Effect Transistor by Alexander B. Smith A THESIS

  • Linearizing techniques for voltage controlled oscillator based analog to digital converters

    Creator:
    Rao, Sachin B.
    Abstract:
    Voltage controlled oscillator (VCO) based ADC is an important class of time-domain ADC that has gained widespread acceptance due to their several desirable properties. VCO-based ADCs behave like an open-loop continuous time ΔΣ modulator and achieve excellent resolution by first order noise shaping the quantization error. However, the SNDR of...
    Resource Type:
    Dissertation
    Full Text:
    to Digital Converters by Sachin B Rao A DISSERTATION submitted to Oregon State

  • Atomic layer deposition of nanolaminate high-κ gate dielectrics for amorphous-oxide semiconductor thin film transistors

    Creator:
    Triska, Joshua B.
    Abstract:
    Nanolaminate dielectrics combine two or more insulating materials in a many-layered film. These structures can be made to significantly outperform films composed of a single one of their constituent materials by adjusting the composition ratio, arrangement, and size of the component layers. In this work, atomic layer deposition (ALD) is...
    Resource Type:
    Masters Thesis
    Full Text:
    -Oxide Semiconductor Thin Film Transistors by Joshua B. Triska A THESIS submitted to

  • State space modeling of alternating-current thin-film electroluminescent devices

    Creator:
    Peery, Jeffrey B.
    Resource Type:
    Masters Thesis
    Full Text:
    . B shows a small interface state density in which electron emission causes a large change in the

  • Comparison and analysis of current-mode logic circuits with differential and static CMOS

    Creator:
    Shrivastava, Manu B.
    Abstract:
    This thesis describes the analysis and comparison of Folded Source-Coupled Logic (FSCL) with standard static CMOS, cascode voltage-switch logic and differential split-level logic gates. The advantages of FSCL are low switching noise and high operating speed. The effect of voltage and device scaling on these topologies is evaluated in terms...
    Resource Type:
    Masters Thesis
    Full Text:
    DSLL Inverter 2/ 5 1 / 1 2/ 2 2/ 4 A 13 2 / 7 2 / 2 2 / 4 2 / 6 A B 2 / 7 3 / 3 2 / 4 2 / 6 A-13 C

  • Phosphor development for alternating-current thin-film electroluminescent applications

    Creator:
    Nguyen, Tin T.
    Resource Type:
    Masters Thesis
    Full Text:
    . Electroluminescence spectrum of a ZnS:TbF3 phosphor duplicated from reference 21 5 8 4 -10. B-V plot of a (Mg0.5Zn0.5

  • Field theoretic analysis of a class of planar microwave and opto-electronic structures

    Creator:
    Hahm, Yeon-Chang
    Abstract:
    With increasing operating frequencies in CMOS RF/microwave integrated circuits, the performance of on-chip interconnects is becoming significantly affected by the lossy substrate. It is the purpose of the first part of this thesis to develop a rigorous field theoretic analysis approach for efficient characterization of single and multiple coupled interconnects...
    Resource Type:
    Dissertation
    Full Text:
    6.16 Normalized power P0ut,a and phase difference (LPout,a-Lpour,b) of cascaded 7 asymmetric coupler

  • Design strategies for interface of bus architectures

    Creator:
    Nayak, Harish Chandra B.
    Abstract:
    This paper discusses the design strategies for interface of bus architectures. It also describes the design of interface between the two popular bus architectures, the Micro Channel and the Nu Bus. The main objective of this thesis is to develop a procedure for bus interface design and use this procedure...
    Resource Type:
    Masters Thesis
    Full Text:
    by Harish Chandra B. Nayak A THESIS Submitted to Oregon State University in partial fulfillment

  • Zonal Resource Adequacy for Voltage Control

    Creator:
    Boller, Michael D.
    Abstract:
    In a power system, operators maintain voltage stability through adequate reactive reserves. Maintaining and accessing an efficient allocation of reactive reserves is prohibitively complex because of reactive line losses, the variety of reactive resources, and either limited or variable reactive outputs from renewable sources. By clustering the system into smaller...
    Resource Type:
    Masters Thesis
    Full Text:
    -Sanchez In a power system, operators maintain voltage stability through adequate reactive reserves

  • A Wireless Energy Harvester for Powering Event-driven Internet-of-things Applications and Battery Charging

    Creator:
    Sadagopan, Kamala Raghavan
    Abstract:
    The need for sustainably powering unobtrusive internet-of-things applications has led to an interest in energy harvesting. Particularly, the proliferation of wireless communication and devices in the 2.4 GHz Industrial Scientific c Medical (ISM) band creates an opportunity to leverage commonly used devices for RF powering. This dissertation presents a low-quiescent-power...
    Resource Type:
    Dissertation
    Full Text:
    . . . . . 99 5.12 (a) Die-photo of the 65 nm battery-charger IC; (b) The chip-on-board packaged IC and antenna

  • Design and Implementation of a Wearable Walking Navigation Assistance System for the Vision Impaired

    Creator:
    Sylwester, Sean T.
    Abstract:
    Few navigation-assistance technologies for vision impaired individuals are practical due to inhibiting factors such as cost, comfort, convenience, and overall usefulness of the assistance. This thesis will present the design and implementation of a navigation assistance system intended to address these concerns. The presented system improves on existing technologies by...
    Resource Type:
    Honors College Thesis
    Full Text:
    excellent options for a wearable object detection system. B. Shortcomings of Similar Systems After

  • Printed Nanocomposite Devices and Flexible Electronics for Humidity Sensing

    Creator:
    Ajithkumar, Amritha
    Abstract:
    The thesis focuses on the development of a novel printed resistive humidity sensor and integrated flexible electronics for an RFID-enabled humidity sensing platform. We explored a hybrid nanocomposite material for humidity sensing consisting of carbon nanomaterials, conductive polymer and cellulose polymer that undergoes resistance change in response to humidity change....
    Resource Type:
    Masters Thesis
    Full Text:
    …………………………………………………………………………...12 6 a. UV exposure box…………….…………….…………………………………………….……….…..13 6 b. Stencil mask

  • Wirelessly Powered cm-Scale Sensor for Small Insect Localization Application

    Creator:
    Kang, Jian
    Abstract:
    The prevalence of Internet-of-Things (IoT) applications leads to an increasing focus on the design and optimization of sensor nodes. Battery lifetime and associated costs of battery replacement often limits the long term operation and viability of sensor nodes. RF wireless energy harvesting on the other hand can be appealing since...
    Resource Type:
    Dissertation
    Full Text:
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 3.14 Measured transient waveform of (a) VRECT and VC1, (b) Zoomed-in of VRECT during Phase-1 and

  • Identifiability-Aware Joint Sparse Error Correction For Robust State Estimation

    Creator:
    Kibria, Sharmin
    Abstract:
    We study joint nonlinear state estimation with multi-period measurement vectors that are potentially corrupted by sparse gross errors. The identifiability-aware approach is proposed to leverage common characteristics of fundamentally identifiable gross errors to enhance error correction performance. First, we derive a necessary rank condition that the sparsity pattern of any...
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    Dissertation
    Full Text:
    constraint: “Solve for Y: BTH⊥Y = B T H⊥A, |supp(Y)| ≤ |supp(A)|”. (2.7) Proof. � Lemma 2.1 implies that A

  • Single-Ended Techniques for Delta-Sigma Modulators

    Creator:
    Lee, Calvin Y.
    Abstract:
    This work presents a high-resolution Delta-Sigma ADC which combines the use of the pseudo-pseudo-differential noise filtering technique with single-ended ring amplifier based integrators. The pseudo-pseudo-differential noise filtering technique utilizes single-ended circuits while maintaining the even-order rejection found in fully-differential structures which alleviates, in the active analog blocks, the need for...
    Resource Type:
    Dissertation
    Full Text:
    OF FIGURES Figure Page 2.1 a) Pseudo-pseudo-differential (PPD) integrator as shown in [1] and b

  • Analysis and design on low-power short-range radios for wireless body area networks

    Creator:
    Cheng, Jiao
    Abstract:
    The release of the IEEE802.15.6 standard has led to increased interest in low-power technologies for wireless body-area-networks (WBANs). The power dissipation, supply voltage, and die area are some of the most important criteria for successful WBAN implementations. Digital-intensive RX architectures can potentially result in sub-1V operation with significant reductions in...
    Resource Type:
    Dissertation
    Full Text:
    Figure 2.1: (a) SRR system block diagram (b) SRO principle ................................ 16 Figure

  • Computing Substation Fragility as a Function of Seismic Component Failure

    Creator:
    Stark, William D.
    Abstract:
    The electrical grid of the Western Interconnection is vulnerable to earthquake damage, especially large-magnitude megathrust events, due to the unique seismic profile of the region. However, the size of the Western Interconnection makes it difficult to model seismic failure in electrical substations to the level of detail necessary to improve...
    Resource Type:
    Masters Thesis
    Full Text:
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 A Response Spectra Investigation . . . . . . . . . . . . . . . . . . . . . 51 B Code

  • A novel control design for a wave energy converter

    Creator:
    Schacher, Alphonse A.
    Abstract:
    Ocean wave energy is rapidly becoming a field of great interest in the world of renewable energy. Significant advancements in design and technology are being made to make wave energy a viable alternative for our growing energy demands. The two major hurdles for ocean wave energy to make a significant...
    Resource Type:
    Masters Thesis
    Full Text:
    energy from the incident wave. Figure 3.1 - Curve a represents the incident wave. Curve b

  • A new comptutational method for constrained nonlinear programming

    Creator:
    Bhatia, Surendra P. S.
    Abstract:
    In this dissertation, a new computational method for equality constrained nonlinear programming is developed. Specifically, problems of minimizing a nonlinear objective function f(x) subject to constraints h(x) = 0, where f is a scalar valued, x is an n-vector and h is a m-vector with m < n is considered....
    Resource Type:
    Dissertation
    Full Text:
    SUGGESTIONS FOR FUTURE RESEARCH BIBLIOGRAPHY Appendix A Appendix B An Unconstrained Minimization Algorithm

  • Calibration, characterization, and linear quadratic Gaussian estimation of sensor feedback signals for a novel ocean wave energy linear test bed

    Creator:
    Haller, Christopher A.
    Abstract:
    Continual growth of the world's energy consumption and the demand for long-term clean renewable energy resources has led to the development of ocean-based wave energy technologies. Emerging technologies are advancing potential solutions to the complex problem of energy generation in the harsh and corrosive ocean environment. To develop these technologies,...
    Resource Type:
    Masters Thesis
    Full Text:
    electron path through the resistive strain gauge, causing a lower resistance. Figure 3.4(b) shows an

  • On the state and parameter estimation of stochastic bilinear systems : a sub-optimal filtering approach

    Creator:
    Shadman-Valavi, Ali
    Abstract:
    Bilinear systems due to their variable structure properties offer more versatility in modelling of nonlinear processes than linear systems. The state estimation problem for a continuous bilinear system with a continuous observation model is studied and the results are extended to the case where the observations are of a discrete...
    Resource Type:
    Dissertation
    Full Text:
    of a control system for nuclear reactors (M6-7). --I> u(t) C B ( ) m L(x, u) = E B.1 u.1 x 1

  • A force control algorithm for a wave energy linear test bed

    Creator:
    Henshaw, Nathan R.
    Abstract:
    Researchers at Oregon State University, focusing on the development of ocean wave energy converters, have designed and installed a unique linear test bed to aid in the characterization of these converters. Under the original control scheme, the linear test bed follows a position profile and is limited in its ability...
    Resource Type:
    Masters Thesis
    Full Text:
    position response, zb, the forward gain A(s) is Equation 3.22, and the feedback gain B(s) is Equation 3.23

  • Nucleation Inhibiting Mechanisms in Atomic Layer Deposition of Nanolaminates

    Creator:
    Witsell, Shane Mike’ele Williama
    Abstract:
    Nucleation in atomic layer deposition (ALD) determines how many cycles are required to initiate growth and to form a continuous film. Nucleation has been exploited for the formation of nanoparticles, catalysts, and for area-selective ALD. Although sometimes overlooked or misrepresented in ALD reports, nucleation is also critical for multicomponent ALD...
    Resource Type:
    Masters Thesis
    Full Text:
    Page Figure 1. Chemisorption ALD Mechanics. (a) ligand exchange (b) ligand dissociation (c

  • A high power emulation of a wind farm

    Creator:
    Lalla, Chelsea
    Abstract:
    As more wind farms are connected to the grid, the variable nature of wind energy begins to influence grid stability. Energy storage could help smooth the variable nature of wind energy. Laboratory demonstration and exploration of the interaction between different energy storage devices and wind energy could help improve and...
    Resource Type:
    Masters Thesis
    Full Text:
    looking at the controllability matrix formed from the A and B matrices of equation 2.9

  • Development of a grid-scale energy storage solution via demand response using model predictive control of multiple residential water heaters

    Creator:
    Halamay, Douglas A.
    Abstract:
    As the growth of renewable energy sources, such as wind, solar, and ocean wave, increases, their impact on the electrical grid has been rapidly escalating. Although renewable resources have been able to offset some traditional generation, they have also brought a need for increasing reserve capacity due to their non-dispatchable,...
    Resource Type:
    Dissertation
    Full Text:
    Development of a Grid-Scale Energy Storage Solution via Demand

  • Development of two-variable maximum power point tracking control for ocean wave energy converters utilizing a power analysis and data acquisition system

    Creator:
    Amon, Ean A.
    Abstract:
    Ocean wave energy shows great potential as a developing form of renewable energy. However, challenges arise in maturing this technology to achieve cost-effective energy conversion. Development and testing of wave energy converters can be problematic due to the harsh environment in which they are operated. To promote development of this...
    Resource Type:
    Dissertation
    Full Text:
    vdc_p ic v c C 1 .86e-3s+3.696 Buck Converter Load (DC Reactor & Load Resistor) ib v b B ia v a

  • Multiple-fault detection in iterative arrays

    Creator:
    Ramamurti, Chandramouli
    Abstract:
    With the advent of LSI, iterative forms of realization of digital systems are becoming increasingly popular with system designers. Many problems occurring in digital computer design render themselves suitable for iterative realization. These include adders, arithmetic logic units, coding and decoding circuits and so on. Fault-free functioning of such systems...
    Resource Type:
    Dissertation
    Full Text:
    Application of (B4O0) and (C,00) to a 2x2 array 135 39 Application of (B,1), (C,01), (A,10) and (D,01) to a

  • Validation of Wave Energy Converter Models and the Development of Control Strategies in WEC-Sim

    Creator:
    So, Ratanak
    Abstract:
    When the term renewable energy is mentioned in a conversation, wind, solar, and hydro energy typically come to mind. However, there is one major resource that has remained mostly untapped: wave energy. Wind and solar power technologies are well established around the world but they cannot generate electricity all the...
    Resource Type:
    Dissertation
    Full Text:
    approved: Ted K.A. Brekken When the term “renewable energy" is mentioned in a conversation, wind, solar

  • Analysis and optimal sizing of an energy storage system for wind farm applications

    Creator:
    Yen, Zuan Z.
    Abstract:
    Modern wind energy is the technology of choice with a short payback period for increasing renewable energy portfolios. Bonneville Power Administration (BPA), a United States power authority in the Pacific Northwest expects to increase their wind energy capacity from 2,000 megawatts to 6,000 megawatts within the next five years. Currently...
    Resource Type:
    Masters Thesis
    Full Text:
    from Wasco Met. Tower . . . 14 2.8 Placement of Turbines A, B, C, and D

  • Implementation of Distributed Localized Communications

    Creator:
    Snyder, Thomas
    Abstract:
    Artificial collectives are useful for accomplishing tasks that require teamwork from multiple simple robots. Multiple robot and collective testbeds have been developed, yet none stay committed to leverage the local interactions, group size, and imperfect information assumptions that strengthen biological collectives. A review of the collective and multiple robot literature,...
    Resource Type:
    Honors College Thesis
    Full Text:
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 A Hardware Design 102 B Terms and Definitions 105 List of Figures 1 Animal spatial swarms

  • A methodology to enable wind farm automatic generation control

    Creator:
    Han, Hai-Yue
    Abstract:
    Over the last decade the increase in penetration of wind power and its variable nature has begun to add considerable stress to and threatened the stability of the nation's grid. In order to continue growth wind farms will need to have the ability to participate in the same grid frequency...
    Resource Type:
    Dissertation
    Full Text:
    Electrical and Computer Engineering presented on January 3, 2012. Title: A Methodology to Enable Wind

  • A motor-generator and supercapacitor based system for microgrid frequency stabilization

    Creator:
    Crispo, Richard F.
    Abstract:
    This research introduces an energy storage system to deliver microgrid frequency response. A doubly-fed induction generator (DFIG) and a squirrel cage induction machine (SCIM) are coupled together as a motor/generator set to deliver an immediate inertial response to a change of frequency, and an inverter and supercapacitors deliver short term...
    Resource Type:
    Masters Thesis
    Full Text:
    stator and rotor has √ 3 2 𝑁𝑠 turns where Ns is the amount of turns in the a-b-c field windings

  • Development and Experimental Hardware Validation of Novel Variable Speed Hydropower Control Schemes for Emerging Applications and Water Resource Paradigms

    Creator:
    Starrett, Michael A.
    Abstract:
    Recent opportunities for new hydropower generation in the United States have often been in non-powered dams and run-of-river type flows occurring in low-impact natural areas and unregulated conduits. At the same time, a changing water resource paradigm is challenging some existing generation in drought stricken areas where supply reservoirs behind...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Michael A. Starrett for the degree of Doctor of Philosophy in

  • Methods for evaluating the impact of renewable resource variability on grid operation and planning

    Creator:
    Halamay, Douglas A.
    Abstract:
    With the recent interest in increasing the penetration of renewable energy sources onto the power grid, there has been an unprecedented rapid deployment of wind generation, especially in the US Pacific Northwest. While wind farm developers have continued to expand their operations, power system operators are left to deal with...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Douglas A. Halamay for the degree of Master of Science in Electrical

  • Development of adaptive damping power take-off control for a three-body wave energy converter with numerical modeling and validation

    Creator:
    Zhang, Zhe
    Abstract:
    The performance of the power take-off (PTO) system for a wave energy converter (WEC) depends largely on its control algorithm. This paper presents an adaptive damping control algorithm that improves power capture across a range of sea states. Validation for the numerical model was performed using data from two sources;...
    Resource Type:
    Masters Thesis
    Full Text:
    % 12% 14% 16% 18% Percentage of change in mean wave power P ro b a b ili ty o f o c c u rr e

  • A survey of power systems vulnerability and failures on the Pacific Northwest due to natural disasters with a focus on volcanic activity.

    Creator:
    Tafempa Messa, Winnie
    Abstract:
    Electricity is at the center of attention as today many essential systems (water, gas, communications, and the internet for example) and infrastructures depend on its continuity for their smooth functioning. On the other hand, electricity power networks have developed and became large, and highly complex technical systems, geographically extended, requiring...
    Resource Type:
    Honors College Thesis
    Full Text:
    Futaleufu, Chile following the 2008 chaiten eruption. b. Underside of a 3KV porcelain insulator that

  • Extended Kalman Filter Simulink Model for Nonlinear System Modeling

    Creator:
    So, Ratanak
    Abstract:
    The objective of the work presented herein is the development of the extended Kalman filter for nonlinear system modeling. A standard Kalman filter is a well-known filter for estimating the state of a system, assuming the system is linear and it has a Gaussian distribution in its noise. In reality,...
    Resource Type:
    Masters Thesis
    Full Text:
    represents the a and b voltages and models both system and measurement noise. The outputs of this system are

  • Use of a model predictive control framework for optimal control of grid scale electrical energy storage in conjunction with a wind farm

    Creator:
    Antonishen, Michael P.
    Abstract:
    Over the last decade, wind penetration in the Pacific Northwest has increased rapidly. The variable nature of this massive new resource has increased stress on the hydropower resource to the point where system limits are currently being reached. In order to cultivate continued growth of the wind energy industry both...
    Resource Type:
    Masters Thesis
    Full Text:
    Use of a Model Predictive Control Framework for Optimal

  • A linear test bed for characterizing the performance of ocean wave energy converters

    Creator:
    Hogan, Peter M.
    Abstract:
    Determining the performance characteristics of various ocean wave energy converters (OWEC) has proven to be difficult due to problems replicating a baseline motion profile in the ocean or wave tank to compare these devices. The linear test bed seeks to mechanically simulate the relative linear motion between the active components...
    Resource Type:
    Masters Thesis
    Full Text:
    LIST OF APPENDICES Page A. ORIGINAL LINEAR TEST BED SPECICATION ……………… 127 B. DC LOAD

  • Design and Implementation of a Frequency Controlled Electric Hot Water Heater Retrofit Thermostat

    Creator:
    Johanesen, Mackenzie S.
    Abstract:
    This design of a Grid Friendly Electric Hot Water Heater Thermostat was built for the Electrical and Computer Engineering Senior Design course, ECE44x. The design enables hot water heaters to respond to imbalances in the grid seen through deviations from standard grid frequency by varying the power output to the...
    Resource Type:
    Honors College Thesis
    Full Text:
    the system. A complete schematic of the final design can be found in Appendix B. Figure 1

  • Application of Nonlinear Model Predictive Controller for Ocean Wave Energy Conversion Systems

    Creator:
    Haider, Ali S.
    Abstract:
    This work addresses the application of Nonlinear Model Predictive Control (NMPC) to a class of ocean wave energy conversion systems in which the cost functional is not in a standard quadratic form, and the WEC model includes the nonlinear effects, such as the hydrodynamic viscous drag. The NMPC implementation is...
    Resource Type:
    Dissertation
    Full Text:
    conditions in WEC-Sim and 𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹 ≤ 400 𝑘𝑘𝑘𝑘: (a) Pod-1 Heave PTO; (b) Pod-1 Pitch PTO

  • A methodology to reduce the strain on hydro turbines using advanced life extending control of multiple energy storage systems

    Creator:
    Brosig, Sean G.
    Abstract:
    Over the last 20 years, there has been rapid growth in the amount of installed wind power in the Pacific Northwest, specifically in the Columbia River Gorge. The variable and non-dispatchable nature of this resource requires that it be balanced in some form by other sources on the grid. In...
    Resource Type:
    Masters Thesis
    Full Text:
    A Methodology to Reduce the Strain on Hydro Turbines Using