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Electrical and Computer Engineering Commons™

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Electronic Devices and Semiconductor Manufacturing

Series

2009

Articles 1 - 4 of 4

Full-Text Articles in Electrical and Computer Engineering

X-Ray Photoemission Analysis Of Chemically Treated Gate Semiconductor Surfaces For Radiation Detector Applications, A. J. Nelson, A. M. Conway, B. W. Sturm, E. M. Behymer, C. E. Reinhardt, R. J. Nikolic, S. A. Payne, G. Pabst, K. C. Mandal Jul 2009

X-Ray Photoemission Analysis Of Chemically Treated Gate Semiconductor Surfaces For Radiation Detector Applications, A. J. Nelson, A. M. Conway, B. W. Sturm, E. M. Behymer, C. E. Reinhardt, R. J. Nikolic, S. A. Payne, G. Pabst, K. C. Mandal

Faculty Publications

No abstract provided.

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A New Control Method For Input-Output Harmonic Elimination Of The Pwm Boost-Type Rectifier Under Extreme Unbalanced Operating Conditions, Ana Vladan Stankovic, Ke Chen Jul 2009

A New Control Method For Input-Output Harmonic Elimination Of The Pwm Boost-Type Rectifier Under Extreme Unbalanced Operating Conditions, Ana Vladan Stankovic, Ke Chen

Electrical and Computer Engineering Faculty Publications

Under severe fault conditions in the distribution system, not only input voltages but also input impedances must be considered as unbalanced. This paper presents a new control method for input-output harmonic elimination of the pulsewidth-modulation (PWM) boost-type rectifier under conditions of both unbalanced input voltages and unbalanced input impedances. The range of imbalance in both input voltages and input impedances, for which the proposed method is valid, is analyzed in detail. An analytical approach for complete harmonic elimination shows that PWM boost-type rectifier can operate at unity power factor under extremely unbalanced operating conditions resulting in a smooth (constant) power …

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Drive-Mode Control For Vibrational Mems Gyroscopes, Lili Dong, David Avanesian Apr 2009

Drive-Mode Control For Vibrational Mems Gyroscopes, Lili Dong, David Avanesian

Electrical and Computer Engineering Faculty Publications

This paper presents a novel design methodology and hardware implementation for the drive-mode control of vibrational micro-electro-mechanical systems gyroscopes. Assuming that the sense mode (axis) of the gyroscope is operating under open loop, the drive-mode controller compensates an undesirable mechanical spring-coupling term between the two vibrating modes, attenuates the effect of mechanical-thermal noise, and most importantly, forces the output of the drive mode to oscillate along a desired trajectory. The stability and robustness of the control system are successfully justified through frequency-domain analysis. The tracking error between the real output and the reference signal for the drive mode is proved …

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Model For Alumina Nanopore-Based Optical Filter, Nathan Lehman, Rama Venkat, Robert A. Schill Jan 2009

Model For Alumina Nanopore-Based Optical Filter, Nathan Lehman, Rama Venkat, Robert A. Schill

Electrical & Computer Engineering Faculty Research

Alumina nanopore structures find applications in magnetic sensors, optical filters, and various biological devices. In this work, we present a ray-optics model for the optical filter. We present a detailed simulation and a simplified analytical expression for the reflectance as a function of the alumina parameters such as pore diameter, pore density, alumina thickness, and a function of the wavelength and angle of incidence of the illuminating plane electromagnetic wave. The reflectance vs wavelength in the range of 400–800nm obtained from the simulation and the analytical expression are compared with that of the experiments for thin and thick alumina. All …

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