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  • 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:
    only a position feedback control system. The linear test bed design, position control system, and a

  • 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:
    interest in the world of renewable energy. Significant advancements in design and technology are being

  • A practical implementation of self-efficacy theory to improve the engineering curriculum

    Creator:
    Plisch, Marjorie
    Abstract:
    What are the most effective ways to improve the engineering curriculum? Improvements should result in increased student retention, undergraduates who are more industry-ready and graduates who are better prepared to be leaders. Current research suggests that the best predictor of persistence is a person’s self-efficacy. The focus of this thesis...
    Resource Type:
    Masters Thesis
    Full Text:
    teaching techniques and draws on other disciplines. A design, implementation and evaluation of a

  • Advanced propulsion systems for linear motion with high performance requirements

    Creator:
    Zhou, Xiaolin
    Abstract:
    Traditionally linear actuator applications are addressed by the use of hydraulic systems. The high maintenance cost and poor reliability will always be the most critical problem in the real applications. Benefited from both the high mechanical advantage of the roll screw and the simple structure of the switched reluctance motor,...
    Resource Type:
    Dissertation
    Full Text:
    simulation and the experimental results verified the validity of the high thrust linear actuator design

  • Design considerations for a miniature atmospheric engine with a magnet-actuated autonomously-reciprocating in-cylinder regenerator for portable power production

    Creator:
    Yarger, David J.
    Abstract:
    Driven by the need for high energy-density power sources, demand has stimulated the development of small-scale engines. A small-scale engine with a fuel supply could replace batteries and utilize higher energy-density liquid hydrocarbon fuels; such an advance could deliver a new age of portable devices. Currently, operable small-scale engines exist;...
    Resource Type:
    Masters Thesis
    Full Text:
    patent [16]. The piston is coupled to a linear electric generator and a spring, and the engine is in

  • Investigation and comparison of generators for dynamic operation in ocean buoys

    Creator:
    Schacher, Anthony Clinton
    Abstract:
    A significantly untapped renewable energy source exists in the world's oceans. It is estimated that if 0.2% of the ocean's untapped energy could be harnessed, it could provide power sufficient for the entire world. Ocean energy extraction is an old concept, and it is currently seeing the benefit of advancing...
    Resource Type:
    Masters Thesis
    Full Text:
    LIMPET design was developed for ease of construction and installation with minimal visual intrusion. [2

  • Metallic nanoscale conductors

    Creator:
    Nebergall, Nathan Sky
    Abstract:
    A new, reproducible method of using electromigration to form metallic nano-conductors is developed using gold and a tin-silver alloy. Measurements revealed a quantization of the electrical conductance consistent with the theory of quantum conductance. The theory of quantum conductance is applied to show that a nano-conductor with a cross-section of...
    Resource Type:
    Masters Thesis
    Full Text:
    scales and a new, faster data acquisition was needed. The final phase of the project was to design

  • New configurations for RF/microwave bandstop and lowpass filters

    Creator:
    Peddibhotla, Harish V.
    Abstract:
    This thesis presents new, compact configurations for RF/microwave bandstop and lowpass filters for embedded passive applications. A simple design methodology is presented for designing the folded-transmission line filters on a microstrip platform. Unlike the conventional stub-loaded filter designs, the proposed folded-line filters will have practical dimensions for a wide range...
    Resource Type:
    Masters Thesis
    Full Text:
    /microwave bandstop and lowpass filters for embedded passive applications. A simple design methodology is

  • Novel control of a permanent magnet linear generator for ocean wave energy applications

    Creator:
    VanderMeulen, Aaron H.
    Abstract:
    Wave energy conversion devices are a rapidly growing interest worldwide for the potential to harness a sustainable and renewable energy source. Due to the oscillatory nature of ocean waves, the power generated from a permanent magnet linear generator (PMLG) for ocean wave energy conversion is pulsed. Focusing on direct drive...
    Resource Type:
    Masters Thesis
    Full Text:
    the PMLG is fully controllable. This thesis will investigate the generator modeling and design of a

  • Novel design and implementation of a permanent magnet linear tubular generator for ocean wave energy conversion

    Creator:
    Prudell, Joseph H.
    Abstract:
    The world’s energy consumption is growing at an alarming rate and the need for renewable energy is apparent now more than ever. Estimates have shown that optimization of the extraction of energy from the ocean could significantly aid the world’s quest for sustainable and affordable energy services for all. From...
    Resource Type:
    Masters Thesis
    Full Text:
    techniques involving the construction and mechanical design aspects are included