대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 1998년도 추계학술대회 논문집 학회본부 B
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- Pages.466-468
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- 1998
섭동이 있는 제어기를 갖는 시스템의 안정도 향상에 관한 연구
A Study of Improving Stability of a System with Perturbed Controller
- Cha, Young-Ho (Soongsil Univ. Electrical Eng. Automatic Control Lab.) ;
- Chung, Tea-Jin (Soongsil Univ. Electrical Eng. Automatic Control Lab.) ;
- Chung, Chan-Soo (Soongsil Univ. Electrical Eng. Automatic Control Lab.)
- 발행 : 1998.11.28
초록
This paper designs a robust controller with improved stability of a system. Robust control theory has been developed by many researchers. The controller derived in that using robust control theory has an assumption that it will be exactly implementation. But, It is very hard because of truncation errors, D-A, A-D transformation, and finite resolution, etc. Such perturbations would make problems in the stability of the system. Recently, Keel's paper presents some examples which shows controllers based on the robust controller design method are very fragile on its own perturbation. In this paper, we try to improve the stability of the closed-loop system in which there exist perturbation in the plant as well as in the controller. The results shows that the stability is improved and the performance is still satisfied.
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