Abstract
A square, linear time invariant, multiple-input multiple-output plant R is considered, known only to belong to a set {R}. The plant is embedded in a feedback structure designed such that the closed loop response belongs to a specified set for all R ε{lunate} {R}. This paper develops sufficient conditions on the uncertain set {R} such that arbitrarily small sensitivity and internal stability can be achieved by the Horowitz synthesis method. Specifically, we show that, in addition to generalized single-input single-output like conditions, there exists a condition on the pole/zero excess of the controller.
Original language | English |
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Pages (from-to) | 565-568 |
Number of pages | 4 |
Journal | Automatica |
Volume | 27 |
Issue number | 3 |
DOIs | |
State | Published - May 1991 |
Keywords
- Control theory
- feedback control
- frequency domain
- multivariable control systems
- robust control