Abstract

Sensitivity properties of the Davison type integral controllers for time-delay plants are discussed on the assumption that the observer gain matrix is fixes and the cheap control is used to determine the feedback gain matrix. It is shown that the Davison type integral controller can be expressed as a limit of the standard predictor-based LQG controller. The explicit representation of the asymptotic sensitivity matrix is obtained by a simple limiting procedure for the standard problem. A numerical example is presented to illustrate the difference from the standard predictor-based LQG controller.

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