Uncertain SISO systems with fixed stable minimum-phase controllers: relationship of closed-loop systems to plant RHP poles and zeros
作者:
W. E. LEITHEAD,
J. O'REILLY,
期刊:
International Journal of Control
(Taylor Available online 1991)
卷期:
Volume 53,
issue 4
页码: 771-798
ISSN:0020-7179
年代: 1991
DOI:10.1080/00207179108953648
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The relationship is explored between the SISO open-loop and closed-loop system structures associated with the use of stable minimum-phase controllers in the face of unrestricted plant uncertainty. All types of plant structure and uncertainty, including arbitrary numbers of right half-plane poles and zeros, are considered in a progressive manner within a Nyquist-Bode framework. In the face of increasingly severe types of plant uncertainty, it is shown why meeting closed-loop system performance objectives becomes increasingly difficult for such plants; there remains, however, a strict relationship between open-loop and closed-loop system structures.
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