Index Catalog // ScholarsArchive@OSU

Neural network control of nonlinear discrete time systems

Creator:: Zakrzewski, Radoslaw Romuald
Abstract:: The main focus of this work is on the problem of existence of nonlinear optimal controllers realizable by artificial neural networks. Theoretical justification, currently available for control applications of neural networks, is rather limited. For example, it is unclear which neural architectures are capable of performing which control tasks. This...
Resource Type:: Dissertation

Grating-tuned external cavity diode lasers

Creator:: Falconer, Beate Stephan
Abstract:: Diode lasers have many advantages such as small size, high efficiency and small angular dispersion of the collimated beam. However they also have some problems like lack of frequency stability. They can not be tuned in wavelength. An external cavity can solve these problems and decrease the laser linewidth. To...
Resource Type:: Masters Thesis

Nonlinear control of high performance aircraft

Creator:: Bean, Ronnie A.
Abstract:: This thesis presents the design of various controllers for a highly maneuverable, high performance aircraft, namely the modified F-18. The aircraft was required to perform high angle-of-attack maneuvers, for which the aircraft behaves in as a highly nonlinear system. An adaptive PID controller was used to control the aircraft through...
Resource Type:: Masters Thesis

High resolution electroluminescent display using active matrix approach

Creator:: Khormaei, Iranpour
Resource Type:: Dissertation

Design of a True-Q Flip Flop

Creator:: Hui, Henry
Abstract:: A CMOS implementation of a True-Q Flip Flop is presented. It can perform either as an asynchronous storage element in micropipelines or a part of the synchronizer. It is capable of double-edge triggering which latches data at both the rising and the trailing edges. It is also free of the...
Resource Type:: Masters Thesis

Enhanced accuracy time domain reflection and transmission measurements for IC interconnect characterization

Creator:: Smolyansky, Dmitry A.
Abstract:: The purpose of this study is to develop accuracy enhancement techniques for the Time Domain Reflection/Transmission (TDR/T) measurements including the analysis of the error sources for the Enhanced Accuracy TDR/T (EA-TDR/T). These TDR/T techniques are used for IC and IC package interconnect characterization and equivalent circuit model extraction, which are...
Resource Type:: Masters Thesis

Electrical characterization and aging studies of green ZnS: Tb AC thin-film electroluminescent devices

Creator:: Kumar, Manoj, 1972-
Resource Type:: Masters Thesis

Development and characterization of AlInN as an alternating-current thin-film electroluminescent display phosphor

Creator:: Mueller, Matthew R.
Resource Type:: Masters Thesis

Fine-grain parallelism on sequential processors

Creator:: Kotikalapoodi, Sridhar V.
Abstract:: There seems to be a consensus that future Massively Parallel Architectures will consist of a number nodes, or processors, interconnected by high-speed network. Using a von Neumann style of processing within the node of a multiprocessor system has its performance limited by the constraints imposed by the control-flow execution model....
Resource Type:: Masters Thesis

Efficient arithmetic using self-timing

Creator:: Ramachandran, Ravichandran
Abstract:: The recent advances in VLSI technology have facilitated feature shrinking and hence a rapid increase in the levels of integration at the chip level. This increase in the level of integration has brought along with it a host of other constraints, the most crucial being timing management and increased power...
Resource Type:: Masters Thesis

Sensitivity analysis and architectural comparison of narrow-band sharp-transition digital filters

Creator:: Kulkarni, Satish S.
Abstract:: Due to advances in high-density low-cost VLSI and communication technology, digital filtering and signal processing are being widely used for real-time signal processing applications. Given the filter specification, choosing the best filter structure for a given application is not a trivial task. The choice of a particular filter structure depends...
Resource Type:: Masters Thesis

Nonlinear control applied to power systems

Creator:: Vedam, Rajkumar
Abstract:: When large disturbances occur in interconnected power systems, there exists the danger that the power system states may leave an associated region of stability, if timely corrective action is not taken. Open-loop remedial control actions such as field-forcing, line-tripping, switching of series-capacitors, energizing braking resistors, etc., are helpful in reducing...
Resource Type:: Dissertation

A comparison of task scheduling algorithms on multicomputers

Creator:: Shin, Chae Young
Abstract:: For many years, the von Neumann bottleneck has imposed speed limits on the execution of a program. Because of their sequential nature, von Neumann computers can only execute a single instruction at a time. Instructions that are side-effect free and can be executed in parallel must wait. In an effort...
Resource Type:: Masters Thesis

Electo-optic characterization of ZnS:Tb ACTFEL devices for probing the hot electron distribution

Creator:: Streicher, Keone R.
Abstract:: In this report, the optical characteristics of ZnS:Tb AC driven thin-film electroluminescent devices are evaluated. Luminescence at low and room temperature under a constant phosphor field is recorded in order to probe the hot electron energy distribution. Samples fabricated by atomic layer epitaxy and by sputter deposition are investigated and...
Resource Type:: Masters Thesis

General pole number model for the brushless doubly-fed machine

Creator:: Boger, Michael S.
Abstract:: The Brush less Doubly-Fed Machine (BDFM) has the potential to be a more cost effective replacement for conventional induction or synchronous machine drives. The BDFM has two stator windings: a power winding and a control winding. An electronic power converter of variable voltage and frequency is connected to the control...
Resource Type:: Masters Thesis

Frequency-domain, parameter estimation for a brushless, doubly-fed machine

Creator:: Ramchandran, Ashok
Abstract:: A Brushless, Doubly Fed Machine (BDFM) attempts to combine the advantages of conventional induction and synchronous types of electrical machines by its unique architecture. The validation of BDFM designs in an actual test environment requires the estimation of the BDFM model parameters from actual experimentation. Accurate values for the parameters...
Resource Type:: Dissertation

Analysis of subsynchronous resonance in power systems

Creator:: Zhu, Wenchun
Abstract:: Three aspects of Subsynchronous Resonance (SSR) related problems in power systems are addressed in this dissertation which aims at contributing to a better understanding of these problems. Subsynchronous Resonance (SSR) problems in series compensated steam-turbine power systems co-exist with the beneficial effects provided by the series capacitors. Since the early...
Resource Type:: Dissertation

Design, fabrication and characterization of complementary heterojunction field effect transistors

Creator:: McMahon, Terry E. (Terry Edwin), 1963-
Abstract:: Complementary delta-doped AlGaAs/GaAs Heterojunction Field Effect Transistor (CHFET) devices and circuits were fabricated using MBE and a 2μ non-planar gate recess process. Several schemes were used in an attempt to improve the performance of the p-channel HFETs. These included delta-doping, carbon-doping and dipole-doping. Circuits and individual n- and p- channel...
Resource Type:: Masters Thesis

Switched-current circuits for a bandpass delta-sigma modulator

Creator:: Pattamatta, Srinivas V.
Resource Type:: Masters Thesis

Resonant forward-biased guard rings for suppression of substrate noise in mixed-mode CMOS circuits

Creator:: Ficq, Bernard L.
Abstract:: Previous work at Stanford University has demonstrated that inductance in the substrate connection is the principal problem underlying the coupling of digital switching noise into analog circuits. The low impedance substrate can be treated as a single node over a local area. Switching in the digital circuits produces current transients...
Resource Type:: Masters Thesis

Mapping of recursive algorithms onto multi-rate arrays

Creator:: Zheng, Yue-Peng
Abstract:: In this dissertation, multi-rate array (MRA) architecture and its synthesis are proposed and developed. Using multi-coordinate systems (MCS), a unified theory for mapping algorithms from their original algorithmic specifications onto multi-rate arrays is developed. A multi-rate array is a grid of processors in which each interconnection may have its own...
Resource Type:: Dissertation

Fuzzy logic control of an inverted pendulum with vision feedback

Creator:: Holzapfel, Frank G.
Abstract:: Recent technical progress has made new forms of controller implementations on computers possible. Especially the technique of Fuzzy Logic Control has found a growing number of applications. Also the development of fast A/D converters has made the acquisation of data with vision based systems possible. In this project we combine...
Resource Type:: Masters Thesis

Allocation of SISAL program graphs to processors using BLAS

Creator:: Raisinghani, Manoj H.
Abstract:: There are a number of well known techniques for extracting parallelism from a given program. They range from hardware implementations, building restructuring compilers or reorganizing of programs so as to specify all the available parallelism. The success rate of any of the known techniques is rather poor over all types...
Resource Type:: Masters Thesis

Modified limiting dilution analysis : a mathematical model with biological interpretation

Creator:: Maier, Stefan H.
Abstract:: A mathematical model of Limiting Dilution Analysis for two limiting parameters is presented and investigated. Limiting Dilution Analysis is a microbiological cell assay developed for immunological application. In the given case we deal with the interaction between B lymphocytes, macrophage derived factor and T-independent antigens. The state of the art...
Resource Type:: Masters Thesis

HEMT-compatible laser diodes

Creator:: Eliason, Garth W.
Resource Type:: Masters Thesis

Implementation of a high performance network node for a control oriented local area network

Creator:: Rafi, Mohammed
Abstract:: TASKMASTER is an experimental microcontroller node of a real-time control oriented network which was proposed by James H. Herzog and Tinggui Zhang to demonstrate the feasibility of a task oriented control structure in performing distributed control actions. This study is a continuation of research involving the TASKMASTER network. A high...
Resource Type:: Masters Thesis

Design of an asynchronous third-order finite impulse response filter

Creator:: Oren, Joel A.
Abstract:: With the increased demand for complex digital signal processing systems, real-time signal processing requires higher throughput systems. In the past, the throughput has been increased by increasing the clock rates, but synchronization can become increasingly more difficult. Recently there has been renewed interest in designing asynchronous digital systems. In an...
Resource Type:: Masters Thesis

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

Characterization and applications of low-temperature-grown MBE gallium arsenides

Creator:: Zhao, Pin
Resource Type:: Masters Thesis

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