Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 66 for “"Electrical Circuit"”.
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Modeling of electrical circuit with recurrent neural networks
In this dissertation, a circuit modeling methodology using recurrent neural networks (RNNs) is developed. The methodology covers model structure selection, data generation, training, and model implementation for circuit simulation. Several different RNN structures are investigated and their …
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An analysis of the electrical circuit of submerged-arc furnaces
The measurement of the electrical variables of a submerged-arc furnace is difficult owing to errors in the measurement of electrode-to-bath voltages and the difficulty in maintaining measurement connections to the hot, harsh environment of a furnace. A system is proposed which provides an accurate, …
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Ground Water Analysis Using Computer Simulation of the Electrical Circuit Analogy
Made available in DSpace on 2017-07-06T18:49:07Z (GMT). No. of bitstreams: 3 Kuelske_Kevin_J_MS.pdf: 48030156 bytes, checksum: 186b595944122e5cb576ac3d5d0a138b (MD5) Kuelske_Kevin_J_MS_ABS.pdf: 328586 bytes, checksum: afb865fae8f295eaf2ca2c53381a97a6 (MD5) license.txt: 4813 bytes, checksum: …
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Nonlinear Uncertainty Quantification, Sensitivity Analysis, and Uncertainty Propagation of a Dynamic Electrical Circuit
… experiments were developed for a simple electrical system in order to demonstrate the computational-to-experimental validation process. The process is applicable to any system, but a simple example was chosen so that any interested person can follow the implementation. Despite the …
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A network approach to force control in robotics and teleoperation
… which extend the definition of standard electrical circuit elements, operating over $\IR$, to higher dimensional spaces.
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Web-based Circuit Design Simulation Package For Solving Electrical Eng
A Web-based circuit design package has been improved and evaluated to provide students with an enhanced and innovative teaching tools package for the electrical circuit design course. The project objectives can be summarized as follows: 1) developing enhanced problem solving skills using a …
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Investigation of Shorting by Penetration in Pem Fuel Cell Membranes
Electrical shorting through the proton exchange membrane (PEM) is a form of early failure commonly found in PEM fuel cells. In order to improve the durability and thus the commercial potential for PEM fuel cells, this form of failure must be understood and mitigated. This research investigates …
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A Low Power Pulsed Arcjet Thruster for Spacecraft Propulsion
A pulse-forming electrical circuit is developed to reduce energy losses in the storage capacitor, and greater than 85% of the initial stored energy is transferred to the arc in a unipolar pulse. A high current diode installed across the capacitor terminals is used to eliminate voltage reversals in …
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Experimental and Analytical Characterization of a Transducer for Energy Harvesting Through Electromagnetic Induction
… In addition, this thesis presents equivalent electrical circuit models with a focus on switched pulse-width-modulated topologies that seek to maximize harvested energy.
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Modeling and simulation of surface mount packages
… packaged structures are performed. Equivalent electrical circuit models for the structures are then derived and compared with measured results to determine quality of fit and validity of these models. With this modeling technique, various package parasitics affecting the circuit performance can …
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Optimum Damping of Beam Vibrations Using Piezoceramic Transducers
… glued on it, each of them shunted with an RL electrical circuit, has been numerically and experimentally investigated, in order to determine the optimal electric tuning parameters for vibration damping. A numerical code based upon Galerkin weighted-residual method is developed and the complete …
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Improved nanotopography sensing via temperature control of a heated atomic force microscope cantilever
… is controlled by maintaining constant electrical resistance, current, power, or voltage across either the entire electrical circuit or individual components of the circuit. A model that links the cantilever heat flow and temperature-dependent cantilever properties to the circuit …
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A natural interaction reasoning system for electronic circuit analysis in an educational setting
… to illustrate the process of reasoning about an electrical circuit in an educational setting. Recognition of hand-drawn shapes is accomplished in a two stage process where strokes are first processed into primitives like lines or ellipses, then combined into the appropriate circuit device symbols …
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Design of Radial Mode Piezoelectric Transformers for Lamp Ballast Applications
… the complex interaction between the physical and electrical circuit characteristics. Prior to a design procedure, experimental design by Face Electronics, LC led to a sample that could fit a ballast application enabling zero voltage switching (ZVS) for the semiconductors without the use of any …
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A Novel Dual Modeling Method for Characterizing Human Nerve Fiber Activation
… SPICE netlist code was utilized to describe the electrical properties of the human nervous membrane in tandem with COMSOL Multiphysics, a finite element analysis software tool. The initial research concentrated on the utilization of the Hodgkin-Huxley electrical circuit representation of the …
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Nonlinear vibration energy harvesting by intentional excitation of high-frequency dynamical instability
… dissipated across a resistive element in the electrical circuit. The primary goal of this work is to numerically, analytically, and experimentally demonstrate the e cacy of employing this type of high-frequency dynamic instability to achieve enhanced vibration energy harvesting under single or …
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The effects of thin polymeric surface films on fretting corrosion
… has two experimental positions that are electrically insulated from the rest of the apparatus so that an electrical circuit could be used to monitor metal-to-metal contact. All experiments were run with 52100 steel balls, 1040 steel plates, a normal load of 45 N (10 lbf), an amplitude of …
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A history of Ohm's Law: Investigating the flow of electrical ideas through the instruments of their production
This thesis takes a deep dive into the electrical work of Georg Simon Ohm. It is tightly focused on the period 1825-1827 when he developed and published the famous law we now think of as “Ohm’s law”. This work differs from previous studies of Ohm’s investigations by putting material culture at its …
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The development of micro-sample electrical impedance analysis for freeze-drying process development
… in the process. Many studies showed that electrical impedance-based techniques are sensitive for studying formulation. There is a need to develop an impedance-based analytical strategy for freeze-drying process development to overcome these issues. Aim: The purpose of this thesis is (1) to …
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