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서지반출
Design of Low Order Cascade Controller to Reduce the Effects of Its Zeros
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  • Design of Low Order Cascade Controller to Reduce the Effects of Its Zeros
  • Design of Low Order Cascade Controller to Reduce the Effects of Its Zeros
저자명
김영철,김재진,Kim. Young-Chol,Kim. Jae-Jin
간행물명
전기학회논문지= The Transactions of the Korean Institute of Electrical Engineers
권/호정보
2008년|57권 6호|pp.1048-1057 (10 pages)
발행정보
대한전기학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
서지반출

기타언어초록

This paper represents a design method for PID or low-order controllers cascaded with a linear plant in the unit feedback system where it is required to meet the given time response specifications such as overshoot and settling time. This problem is difficult to solve because the zeros of the controller appear in the numerator of the overall system and thus those zeros may make the time response design difficult. In this paper, we propose a new approach based on the partial model matching and the so called K-polynomial. The partial matching problem is formulated to an optimization problem in which a quadratic function of coefficient errors between a target model and the resulting closed loop system is minimized. For the sake of satisfying the closed loop stability, a set of quadratic constraints associated with the cost function is introduced. As a result, the controller designed meets both time response requirements and the closed loop stability, if any. It is shown through several examples that the present method can be easily applied to these problems.