The New Jersey Institute of Technology's
Electronic Theses & Dissertations Project

Title:	Real time control of a dual resonator system
Author:	Shen, Penghuai
View Online:	njit-etd1993-143 (xiii, 131 pages ~ 2.9 MB pdf)
Department:	Department of Electrical and Computer Engineering
Degree:	Master of Science
Program:	Electrical Engineering
Document Type:	Thesis
Advisory Committee:	Chang, Timothy Nam (Committee chair) Meyer, Andrew Ulrich (Committee member) Hou, Edwin (Committee member)
Date:	1993-10
Keywords:	Piezoelectric devices. Electric resonators. Real-time control.
Availability:	Unrestricted
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.