Abstract

Recently a newly introduced concept called “cyclic switching” was was shown provide a viable solution to the long standing certainty equivalence stabilizability problem which arises in the design of estimator-based parameter adaptive controls because of the existence of points in parameter space where the estimated model upon which certainty equivalence control is based, looses stabilizability (Pait and Morse, 1994). Still more recently a simple, ‘high-level’ controller called a ‘supervisor’ was proposed for the purpose of coordinating the switching into feedback with a siso process, of a sequence of linear positioning or set-point controllers from a family of candidate controllers, so as to cause the output of the process to approach and track a constant reference input (Morse, n.d.). The purpose of this paper is to demonstrate that cyclic switching and supervisory control are compatible concepts.

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