Journal of Xidian University

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Supervisor synthesis in Petri nets based on basis marking graphs

MA Ziyue;TONG Yin   

  1. (School of Mechano-electronic Engineering, Xidian Univ., Xi'an 710071, China)
  • Received:2015-11-05 Online:2016-12-20 Published:2017-01-19

Abstract:

This paper proposes a method to design an online controller based on basis marking graphs for Petri nets. According to the initial marking and the controllability of transitions, a basis marking graph is first computed whose nodes are marked as legal or weakly illegal by solving integer programming problems. Based on the marked basis reachability graph, an online transition disabling rule is computed on-time to prevent the system from reaching illegal markings by firing uncontrollable transitions. This control strategy has a high efficiency since the full enumeration of the reachability graph is avoided.

Key words: Petri net, supervisory control, basis marking


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