Imposing structural and performance specifications on a system under supervisory control
Identifieur interne : 007847 ( Main/Curation ); précédent : 007846; suivant : 007848Imposing structural and performance specifications on a system under supervisory control
Auteurs : Gülgün AlpanSource :
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Abstract
The purpose of this article is to design a controller, which guarantees a structural specification while increasing a performance measure. The system which is to be controlled is modelled by a Petri net and the supervisory controller is constructed in the form of a set of routing functions. If the system is controllable, the solution of the evolution equations gives a feasible region for the routing parameters for places with several output transitions. Any point in that feasible region corresponds to a set of values for which the structural specification is guaranteed. We propose a heuristic method which searches the feasible region to find the routing parameters that increase the throughput of the system. The advantages of the approach is two-fold : 1. the fulfilment of two specifications which are different in nature are handled together ; 2. in general, the timed model of a system is used for the performance analysis of a system. Here, the evolution equations obtained by using routing functions are based on the un-timed interpretation of the Petri net.
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