HIERARCHICAL CONTROL OF TIMED DISCRETE-EVENT SYSTEMS

An abstract hierarchical control theory is developed for a class of ti med discrete-event systems (TDES) within the discrete-event control ar chitectural framework proposed earlier by the authors. For this develo pment, a control theory for TDES is introduced in the spirit of a prio r theory of Brandin. A notion of time control structures is introduced , and on its basis a general property of hierarchical consistency is a chieved by establishing control consistency - namely preservation of t ime control structures through the aggregation mapping in a two-level hierarchy.