Document Type

Thesis

Date of Award

10-31-1993

Degree Name

Master of Science in Electrical Engineering - (M.S.)

Department

Electrical Engineering

First Advisor

Timothy Nam Chang

Second Advisor

Andrew Ulrich Meyer

Third Advisor

Edwin Hou

Abstract

An experimental multi-resonator system has been developed to study modelling and robust control of such systems in a real-time environment. The plant to be controlled consists of a pair of interconnected resonators whose resonant frequency and plant structure are known. The control objectives are to provide closed loop stability and asymptotic regulation of the frequency, gain and phase of each of the resonators. Furthermore, it is desired to use a minimal controller configuration so as to reduce implementational complexity.

The theoretical results follow directly the paper " Decentralized Robust Control of Interconnected Resonators" written by my advisor Dr. Timothy N. Chang. The main theoretical results have been applied in this experiment and verified by the experimental results.

The controller identification approach has been employed, and feedforward and robust feedback control are implemented in this work. Various experimental conditions such as: single loop amplitude control, 2-loop amplitude control, phase control, and 2-loop amplitude & phase control have been tested. The data obtained are in good agreement with the theoretical predication and simulation results. The stated objectives have all been met.

Data. analysis was carried out by porting the experimental data. into PC MATLAB environment whereas simulations were done by means of the ALSIM software.

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