Abstract
본 논문은 고정 파라미터를 갖는 퍼지 PID 제어기의 퍼지화 과정에서 입력공간의 제한으로 제어입력이 제한되어 발생하는 제어시스템의 상승시간 지연과 불안정성을 개선하기 위해 가변 파라미터를 갖는 퍼지 PID 제어기를 제안하고 설계방법과 추종성능을 기술한다. 제어기의 파라미터는 소이득정리로부터 제어시스템의 BIBO 안정도 조건을 만족하도록 가변되어 전체 제어시스템에 대한 BIBO 안정도를 만족시킨다. This paper proposes a nonlinear fuzzy PID controller with variable parameters to improve slow rising time and divergence occurred by limited input spaces and a resultant limited control input during fuzzification in a fuzzy PID controller with fixed parameters, and describes the design principle and tracking performance of a proposed fuzzy PID controller. The parameters of a proposed controller are adjusted by the stability conditions derived from 'small gain theorem' and satisfy the BIBO stability of overall control system.
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More From: Journal of Korean Institute of Intelligent Systems
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