Transactions of the Institute of Systems, Control and Information Engineers
Online ISSN : 2185-811X
Print ISSN : 1342-5668
ISSN-L : 1342-5668
Robust Stability Condition Using Phase Information and Achievement of Low Sensitivity
Kou YAMADA
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1998 Volume 11 Issue 7 Pages 375-383

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Abstract

In this paper, we consider robust stability of single-input single-output continuous time-invariant systems with uncertainty. A robust stability (necessary and sufficient) condition for the system with a certain class of uncertainty is presented. The condition that a set of the plant and the nominal plant is contained in that class is clarified. In addition, it is shown that the robust stability (necessary and sufficient) condition does not depend on the number of poles of the plant and that of the nominal plant. In this framework, we can construct a control system with low sensitivity characeristics and robust stability.

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