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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. ...
Feedback Control of Border Collision Bifurcations in Two-Dimensional Discrete-Time Systems
(2002)
The feedback control of border collision bifurcations is consideredfor two-dimensional discrete-time systems. These are bifurcations that can occur when a fixed point of a piecewise smooth system crosses the border between ...
Adaptive Identification and Control of Hysteresis in Smart Material Actuators
(2003)
Hysteresis exhibited by smart materials hinders their wider applicability in actuators and sensors. In this paper methods are studied for recursive identification and adaptive inverse control of smart material actuators, ...
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 ...
Development of an Engine Idle Speed and Emission Controller
(2005)
This paper is focused on idling. An engine model is developed. The engine model includes an airflow dynamics model, a combustion model, a fuel injection model, and a catalytic converter model. These models will be used to ...
Lyapunov-Based Feedback Control of Border Collision Bifurcations in Piecewise Smooth Systems
(2004)
Feedback control of piecewise smooth discrete-time systems that undergo border collision bifurcations is considered. These bifurcations occur when a fixed point or a periodic orbit of a piecewise smooth system crosses or ...
Control of Hysteresis in Smart Actuators with Application to Micro-Positioning
(2003)
Hysteresis in smart material actuators makes the effective use of these actuators quite challenging. The Preisach operator has been widely used to model smart material hysteresis. Motivated by positioning applications of ...
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 Optimal Control via Intermittent Cooperation
(2004)
We investigate the solution of a large class of fixed-final-state optimal control problems by a group of cooperating dynamical systems. We present a pursuit-based algorithm -- inspired by the foraging behavior of ants -- ...