๐”– Bobbio Scriptorium
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Stability robustness characterization and related issues for control systems design

โœ Scribed by Yanlin Li; E.Bruce Lee

Book ID
102992056
Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
538 KB
Volume
29
Category
Article
ISSN
0005-1098

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โœฆ Synopsis

First, we

show that the H ยฎ norm of a sensitivity function matrix for a stable multivariable closed loop system indicates its stability robustness in the sense of gain margin and phase margin. Second, we apply this result to the problem of synthesizing a robust stabilizing controller. The emphasis of the analysis is LQ feedback system design. The goal is to design an observer based controller such that the resulting closed loop system has the robustness property that an LQ state feedback system has. This is achievable if the sensitivity function of the observer based control system is very close to that of the state feedback system. The closeness is measured by the ~ norm and classical/T ~ optimization techniques are used for design. *

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