Design, Analysis and Verification of Real-Time Systems Based on Time Petri Net Refinement

  • Authors:

  • Zhijun Ding;Changjun Jiang;Mengchu Zhou

  • Affiliations:

  • Key Laboratory of Embedded System and Service Computing, Ministry of Education, Tongji University, China;Key Laboratory of Embedded System and Service Computing, Ministry of Education, Tongji University, China;New Jersey Institute of Technology

  • Venue:
  • ACM Transactions on Embedded Computing Systems (TECS) - Special Issue on Modeling and Verification of Discrete Event Systems
  • Year:
  • 2013

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Abstract

A type of refinement operations of time Petri nets is presented for design, analysis and verification of complex real-time systems. First, the behavior preservation is studied under time constraints in a refinement operation, and a sufficient condition for behavior preservation is obtained. Then, the property preservation is considered, and the results indicate that if the refinement operation of time Petri nets satisfies behavior preservation, it can also preserve properties such as boundedness and liveness. Finally, based on the behavior preservation, a reachability decidability algorithm of a refined time Petri net is designed using the reachability trees of its original net and subnet. The research results are illustrated by an example of designing, analyzing and verifying a real-time manufacturing system.