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Fast Evaluation of Demagnetizing Field in Three Dimensional Micromagnetics using Multipole Approximation
(2001)
Computational micromagnetics in three dimensions is of increasing interest with the development of magnetostrictivesensors and actuators. <p>In solving the Landau-Lifshitz-Gilbert (LLG) equation, the governing equation of ...
Control of Smart Actuators: A Viscosity Solutions Approach
(2001)
Hysteresis in smart materials hinders their wider applicability in actuators. In this report we investigate control of smart actuators through the example of controlling a commercially available magnetostrictive actuator. ...
Tool Wear Estimation from Acoustic Emissions: A Model Incorporating Wear Rate
(2001)
Almost all prior work on modeling the dependence of acoustic emissions on tool wear have concentrated on the effect of wear-level on the sound. We give justification for including the wear-rate information contained in the ...
Parameter Identification and Simulation of a Thin Film Conducting Polymer Gas Sensor
(2001)
Thin film conducting polymer gas composition sensors can be used forindustrial safety monitoring, environmental pollution control, and numerousother applications. In this paper, a sensor system model is developed andthis ...
Biologically-Inspired Acoustic Wear Analysis
(2001)
We report on a novel method of acoustic wear analysis using spectral classification based on a model of mammalian audition. This approach uses biologically-inspired pre-processing filters that give a multi- resolution ...
Real-time in-situ chemical sensing, sensor-based film thickness metrology, and process control in W CVD process
(2001)
A real-time in-situ sampling system has been implemented for chemical sensing in tungsten chemical vapor deposition process (W-CVD) using mass spectrometry. Sensor integration was realized to allow synchronous capture of ...
Adaptive Wavefront Control using a Nonlinear Zernike Filter
(2001)
A conventional Zernike filter measures wavefront phase by superimposing the aberrated input beam with a phase-shifted version of its zero-orderspectral component. The Fourier-domain phase-shifting is performed by afixed ...
Advanced Phase-Contrast Techniques for Wavefront Sensing and Adaptive Optics
(2001)
High-resolution phase-contrast wavefront sensors based on optically addressed phase spatial light modulators and micro-mirror/LC arrays areintroduced. Wavefront sensor efficiency is analyzed for atmosphericturbulence-induced ...
A Primal-Dual Interior-Point Method for Nonlinear Programming with Strong Global and Local Convergence Properties
(2001)
A scheme---inspired from an old idea due to Mayne and Polak (Math. Prog.,vol.~11, 1976, pp.~67--80)---is proposed for extending to general smoothconstrained optimization problems a previously proposed feasibleinterior-point ...
Stereausis: A Binaural Processing Model
(2001)
The stereausis network model measures interaural differences by detecting spatial disparities between instantaneous outputs from both ears. It can detect the location of a sound source at all frequencies as well as detect ...