Controllability of complex siphons for deadlock prevention in Systems of Simple Sequential Processes with Resources

Shouguang G. Wang, Dan You, Mengchu Zhou

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

Abstract

Deadlock prevention policies for flexible manufacturing systems (FMS) usually suffer from redundant monitors since some monitors may be added to the siphons that are originally controlled. To eliminate these redundant monitors, the controllability condition of siphons is studied in this work. For a class of Petri nets called Systems of Simple Sequential Processes with Resources (S3PR), new concepts of simple and complex strict minimal siphons (SMS) are introduced. More importantly, a necessary and sufficient condition of controllability of complex SMS is proposed for the first time. Based on this condition, an algorithm is given to control all SMS via M-controlling part of them and a structurally simple optimal liveness-enforcing supervisor can thus be synthesized for some classes of S3PR. Two examples are provided to illustrate the application of the proposed algorithm and show its superiority to prior work.

Original languageEnglish (US)
Article number7139731
Pages (from-to)3820-3825
Number of pages6
JournalProceedings - IEEE International Conference on Robotics and Automation
Volume2015-June
Issue numberJune
DOIs
StatePublished - Jun 29 2015
Event2015 IEEE International Conference on Robotics and Automation, ICRA 2015 - Seattle, United States
Duration: May 26 2015May 30 2015

All Science Journal Classification (ASJC) codes

  • Software
  • Control and Systems Engineering
  • Artificial Intelligence
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'Controllability of complex siphons for deadlock prevention in Systems of Simple Sequential Processes with Resources'. Together they form a unique fingerprint.

Cite this