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A Lyapunov Functional for the Cubic Nonlinearity Activator-Inhibitor Model Equation
(1998)
The cubic nonlinearity activator-inhibitor model equation is a simpleexample of a pattern-forming system for which strong mathematical resultscan be obtained. Basic properties of solutions and the derivation ofa Lyapunov ...
A Model for a Thin Magnetostrictive Actuator
(1998)
In this paper, we propose a model for dynamic magnetostrictive hysteresisin a thin rod actuator. We derive two equations that representmagnetic and mechanical dynamic equilibrium. Our model results from an application of ...
Controllability of Lie-Poisson Reduced Dynamics
(1997)
In this paper we present sufficient conditions for controllability of Lie-Poisson reduced dynamics of a class of mechanical systems with symmetry. We prove conditions (boundedness of coadjoint orbits and existence of a ...
A Wavelet Approach to Wafer Temperature Measurement via Diffuse Reflectance Spectroscopy
(1996)
A methodology for the determination of wafer temperature in Molecular Beam Epitaxy via diffuse reflectance measurements is developed. Approximate physical principles are not used, instead, patterns in the data (reflectance ...
The Hybrid Motor Prototype: Design Details and Demonstration Results
(1998)
A novel hybrid rotary motor incorporating piezoelectric and magnetostrictive actuators has been designed and demonstrated. The novelty of this motor was the creation of an electrical resonant circuit, whereby reactive power ...
Analysis of a complex activator-inhibitor equation
(1999)
Basic properties of solutions and a Lyapunov functionalare presented for a complex activator-inhibitor equation witha cubic nonlinearity.Potential applications include control of coupled-oscillator arrays(for quasi-optical ...
Fast Evaluation of Demagnetizing Field in Three Dimensional Micromagnetics using Multipole Approximation
(2000)
Computational micromagnetics in three dimensions is of increasing interest with the development of magnetostrictive sensors andactuators. In solving the Landau-Lifshitz-Gilbert (LLG) equation, the governing equation of ...
Modeling and Model Reduction for Control and Optimization of Epitaxial Growth in a Commercial Rapid Thermal Chemical Vapor Deposition Reactor
(1998)
In December 1996, a project was initiated at the Institute for Systems Research (ISR), under an agreement between Northrop GrummanElectronic Sensors and Systems Division (ESSD) and the ISR, to investigatethe epitaxial ...
Language, Behaviors, Hybrid Architectures and Motion Control
(1997)
In this paper we put forward a framework that integrates features of reactive planning models with modern control-theory-based approaches to motion control of robots. We introduce a motion description language, MDLe, that ...
Computing Balanced Realizations for Nonlinear Systems
(2000)
This paper addresses the problem of computability pertaining to the Scherpen(1994) theory and procedure for balancing of nonlinear systems. In contrastto Moore's (1981) balancing method for linear systems, the Scherpen ...