Design of Optimal Control Sequences in Petri Nets Using Basis Marking Analysis
IEEE Transactions on Automatic Control(2022)
摘要
In this article, we develop an algorithm for designing an optimal control sequence in Petri nets, which drives a plant net from a
source marking
to a set of
target markings
without passing any pregiven forbidden markings. Such control sequences are useful in flexible reconfigurable automated systems, where a plant necessarily responds promptly to a request of reconfiguration. We develop a Dijkstra searching algorithm that is carried out in the basis marking space of a plant net instead of the conventional reachability space. Hence, only a small subset of the reachability set is explored, while the unpromising branches are reduced. Moreover, we propose a transition selecting rule to expose all forbidden trajectories and all first-met target markings during the searching process. The main advantage of the proposed method is wide applicability and low computational effort.
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关键词
Basis reachability graph (BRG),control sequence,discrete-event system,Petri net
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