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  • Influence of adjustable speed drive on induction motor fault detection using stator current monitoring.

    Creator:
    Al-Shahrani, Ali
    Abstract:
    The detection of motor faults at their incipient stage is of prime importance to any industrial plant. The introduction of adjustable speed drives has improved the control and the efficiency of induction motors, however, this has changed the nature of motor faults and how they can be detected. Current signature...
    Resource Type:
    Masters Thesis
    Full Text:
    Distribution w/o Drive w Drive 3 0 50 100 150 200 N u m b e r Bearing Stator

  • Efficient power conversion interface circuits for energy harvesting applications

    Creator:
    Le, Triet T.
    Abstract:
    Harvesting energy from the environment for powering micro-power devices have been increasing in popularity. These types of devices can be used in embedded applications or in sensor networks where battery replacement is impractical. In this dissertation, different methods of energy harvesting from the environment are explored as alternative sources of...
    Resource Type:
    Dissertation
    Full Text:
    rectification, fabricated in a 0.25-μm CMOS process, is 86% efficient with 22-μW peak output power when

  • 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:
    between the line sources generating the SAWs is given as p. There are M line sources

  • Classification of motion capture sequences

    Creator:
    Maniar, Dharin Haresh
    Abstract:
    Motion capture data is a digital representation of the complex temporal structure of human motion. Motion capture is widely used for data-driven animation in sports,medicine and entertainment, because of its ability to capture complex and realistic motions. Due to its efficiency and cost, methods for reusing collections of motion capture...
    Resource Type:
    Masters Thesis
    Full Text:
    probability P(M|Y), where M is the motion label and Y is the observed data i.e. the frames in the sequence

  • Development of perovskite thin films for use in piezoelectric based microelectromechanical systems

    Creator:
    Shelton, Christopher T.
    Abstract:
    The lead-zirconate-titanate (PZT) solid solution system is currently the workhorse of piezoelectric-based microelectromechanical systems (MEMS) research. Among bulk materials it is known to be one of the strongest piezoelectrics, with extremely high piezoelectric coefficients and electro-mechanical coupling factors. Reproducing these exceptional qualities in thin film form, however, requires precise tuning...
    Resource Type:
    Masters Thesis
    Full Text:
    values. For example, in titanium rich lead zirconate-titanate (PZT), which has ∞m symmetry after being

  • Fluid flow on interacting, deformable surfaces

    Creator:
    Neill, Patrick
    Abstract:
    Fluid simulation is an interesting research problem with a wide range of applications including mechanical engineering, special effects in movies and games, and scientific simulation. Due to the complex nature of typical fluid flow equations, there are circumstances where a full volumetric fluid simulation may not be necessary to generate...
    Resource Type:
    Masters Thesis

  • 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:
    2009 2010 En e rg y (M W a) Petroleum & Pet Coke Wind Nuclear Natural gas peaking Natural

  • Learning multiple non-redundant codebooks with word clustering for document classification

    Creator:
    Surve, Akshat Sudhakar
    Abstract:
    The problem of document classification has been widely studied in machine learning and data mining. In document classification, most of the popular algorithms are based on the bag-of-words representation. Due to the high dimensionality of the bag-of-words representation, significant research has been conducted to reduce the dimensionality via different approaches....
    Resource Type:
    Masters Thesis

  • Determination of a calculation bias in the MCNP model of the OSTR

    Creator:
    Kitto, Allyson K.
    Abstract:
    Oregon State University is home to a TRIGA® Mark II reactor. In October of 2008, the reactor began operating on low enriched uranium fuel. A model of the facility exists in MCNP, a Monte Carlo code that can be used for criticality calculations. Until now, a bias in the calculation...
    Resource Type:
    Masters Thesis
    Full Text:
    Conversion Mark III 1000 Reed College TRIGA Mark I 250 Texas A&M University TRIGA Conversion

  • Formation of NO during pyrolysis combustion of Kraft black liquor / by Rungsun Pianpucktr

    Creator:
    Pianpucktr, Rungsun
    Abstract:
    Nitrogen evolution during black liquor pyrolysis and black liquor combustion were studied using a laminar entrained-flow reactor. The experimental conditions were 700-1100°C and 0.3-2.2 seconds residence time. The pyrolysis experiments were performed in a pure nitrogen atmosphere. The oxygen concentrations during the combustion of black liquor experiments were 4 and...
    Resource Type:
    Masters Thesis
    Full Text:
    Frederick who provided many suggestions. Dr.Terry Beaumariage, Dr.Skip Rochefort, Dr.Joseph Zaworski who