Title :
Model following control system for nonminimum phase plants using Taylor´s expansion
Author_Institution :
Dept. of Electron. Eng., Osaka Inst. of Technol., Japan
Abstract :
Exact model matching method can not be used for a system having unstable zeros since unstable pole-zero cancellations occur in the overall systems. We propose an approximate cancellation of anti-stable zeros instead of exact cancellations. For this, we show a design method of approximate polynomials for the inverse of anti-stable polynomials using Taylor´s expansion. Then, we show a design of model following control systems for a plant having unstable zeros based on the pole placement scheme
Keywords :
control system synthesis; discrete time systems; least squares approximations; linear systems; model reference adaptive control systems; poles and zeros; Taylor expansion; anti-stable polynomials; anti-stable zeros; approximate cancellation; design method; least square approximation; model following control system; nonminimum phase plants; single-input single-output linear discrete-time plant; unstable pole-zero cancellations; unstable zeros; Control system synthesis; Control systems; Design methodology; Ear; Least squares approximation; Poles and zeros; Polynomials; Stability; State feedback; Taylor series;
Conference_Titel :
Decision and Control, 2001. Proceedings of the 40th IEEE Conference on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-7061-9
DOI :
10.1109/.2001.980984
