제어로봇시스템학회:학술대회논문집
- 1991.10a
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- Pages.669-675
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- 1991
Operation of a supercritical fluid extraction process using a fuzzy expert control system
Fuzzy 전문가 제어계를 이용한 초임계 유체 추출 장치의 운전
Abstract
Based on process analysis as well as extensive operation experience, two fuzzy expert control algorithms, for startup and control, are proposed for a supercritical fluid extraction process which has high interacting multivariable structure. In the proposed algorithms, a new simple defuzzification method which only requires four fundamental arithmetic rules is also presented. Through numerical simulations, control performance using the proposed control algorithm is compared with that of a different fuzzy algorithm by an other researcher and that of conventional PID-type controllers which are tuned by well-known optimal criteria. Also, the proposed control algorithm has been tested to the bench scale supercritical fluid extraction process. As a consequence, the proposed fuzzy expert controller has shown fast and robust control performance while the other controllers show sluggish and/or highly oscillatory responses.
Keywords