Performance improvement using time delays in multivariable controller design |
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Authors: | WOOK HYUN KWON GI WON LEE SANG WOO KIM |
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Affiliation: | Department of Control and Instrumentation Engineering and Automation Systems Research Institute , Seoul National University , San 56-1 Silim-dong Kwanak-gu, Seoul, 151-742, South Korea |
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Abstract: | A new controller for linear multivariable ordinary systems is suggested in which distributed delays are included in the feedback loop. A general design approach to obtain this type of controller is suggested. It is shown that the resulting closed-loop system is asymptotically stable under some sufficient conditions. Sufficient conditions are derived under which the disturbance attenuation, the robustness against parameter variations, and the time-delay stability margins are improved by the proposed controller. The state feedback tracking controller and the dual-state observer are obtained by modification of the proposed controller. |
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