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Hierarchical Supervisory Control Theory

P. Hubbard, P.E. Caines

In this work a hierarchical control theory for supervisory automata based on state aggregation has been developed. We give definitions for the partitions and high-level dynamics for hierarchical supervisory control automata. Our primary interest is the problem of ensuring (non-blocking) accessibility of the goal states and we can show this may be decomposed and solved in a hierarchical fashion with local control in conjunction with control at the aggregated level. These results are consistent with those obtained in the existing language-based hierarchical supervisory control theory. The theory has been applied to transfer line models of physical plants with material feedback.
 


Annual Report

Fri Nov 26 23:00:32 GMT 1999