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Performance issues in the individual channel design of 2-input 2-output systems. Part 2. Robustness issues

 

作者: W. E. LEITHEAD,   J. O'REILLY,  

 

期刊: International Journal of Control  (Taylor Available online 1992)
卷期: Volume 55, issue 1  

页码: 3-47

 

ISSN:0020-7179

 

年代: 1992

 

DOI:10.1080/00207179208934224

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

In this second part of a three part series of papers examining the performance issues raised by the introductory paper (O'Reilly and Leithead 1991) on individual channel design for multivariable control, attention is focused on robustness: that is, on the meeting of performance specifications—in particular closed-loop system stability—in the face of plant uncertainty. The main results are that the use of phase margins and gain margins to assess robustness of 2-input 2-output multi-variable systems is justified. Further, it is shown that controllers for uncertain 2-input 2-output multivariable systems can be designed by classical SISO Nyquist-Bode local loop shaping using stable minimum phase controllers. Several additional results are also described in the paper.

 

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