Analysis and design of linear multivariable feedback systems in the presence of additive perturbations
作者:
R. W. DANIEL,
B. KOUVARITAKIS,
期刊:
International Journal of Control
(Taylor Available online 1984)
卷期:
Volume 39,
issue 3
页码: 551-580
ISSN:0020-7179
年代: 1984
DOI:10.1080/00207178408933188
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The paper introduces the concept of normal approximations to the analysis of uncertain linear multivariable feedback systems, in order to derive a new criterion for the stability of plants subject to additive perturbations. This criterion permits a complete assessment of stability margins in that it provides a measure of tolerance to uncertainty as well as providing a measure of gain/phase margins. The proposed approach leads to a systematic design procedure which minimizes the effects of uncertainty by attaining the condition of normality or which improves the stability margins by robust gain/phase sharing. The results presented in this paper are insensitive to small perturbations on the nominal plant model and provide the means for a consideration of information concerning the structure of uncertainty.
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