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Now showing items 131-140 of 162
Control and Stabilization of a Class of Nonlinear Systems with Symmetry
(1998)
The focus of this dissertation is to study issues related to controllability and stabilization of a class of underactuated mechanical systems with symmetry. In particular we look at systems whose configuration can be ...
Model Reduction via the Karhunen-Loeve Expansion Part I: An Exposition
(1996)
In formulating mathematical models for dynamical systems, obtaining a high degree of qualitative correctness (i.e. predictive capability) may not be the only objective. The model must be useful for its intended application,and ...
Averaging and Motion Control of Systems on Lie Groups
(1994)
In this dissertation, we study motion control problems in the framework of systems on finite-dimentional Lie groups. Nonholonomic motion control problems are challenging because nonlinear controllability theory does not ...
Approximation by Spherical Waves in Lp-Space
(1996)
We prove that functions of the form f(1x-a1), a in a closed surface, are dense in the space of all functions in Lp, for zn/(n+1). This property fails for 1zn/(n+1). By letting f be a Gsussian, we obtain a result about ...
An Orthogonal Collocation Technique for Rapid Thermal Processing System Discretization
(1997)
A model of a multiple heating zone Rapid Thermal Processing (RTP) system is developed to study wafer thermal dynamics during a processing cycle. The system is discretized with trial functions generated from the linearized ...
REU Report: A Simulated Study of Temperature as a Function of Gas Flow Rate in a Chemical Vapor Deposition Reactor
(1999)
A study to further simulation research of a commercial chemical vapor deposition (CVD) reactor is presented. A simulation is created using the computational fluid dynamics software package, Fluent (version 4). The variation ...
Efficient Implementation of Controllers for Large Scale Linear Systems via Wavelet Packet Transforms
(1998)
In this paper we present a method of efficiently implementing controllers for linear systems with large numbers of sensors and actuators. It is well known that singular value decomposition can be used to diagonalize any ...
Neural Modelling with Wavelets and Application in Adaptive/Learning Control
(1995)
Spatio-spectral properties of the Wavelet Transform provide a useful theoretical framework to investigate the structure of neural networks. A few researchers (Pati & Krishnaprasad, Zhang & Benveniste) have investigated the ...
A New Framework for Supervisory Control of Discrete Event Systems
(1995)
We propose a new framework for supervisory control design for discrete event systems. Some of the features of the proposed approach are: (i) By associating control and observation capabilities and limitations with the plant ...
A Hybrid Control Strategy for Path Planning and Obstacle Avoidance with Nonholonomic robots
(1994)
The primary focus is on providing a formal basis for behavior- based robotics using techniques that have been successful in control-based approaches for steering and stabilizing robots that are subject to nonholonomic ...