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Optimization of Timed Petri Nets using CP-SAT

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Titel: Optimization of Timed Petri Nets using CP-SAT
Autoren: Lennartson, Bengt, 1956
Quelle: 17th IFAC Workshop on Discrete Event Systems, WODES 2024, Rio de Janeiro, Brazil IFAC Proceedings Volumes (IFAC-PapersOnline). 58(1):90-95
Schlagwörter: Time-optimal control, satisfiability solver, constraint programming, timed Petri net
Beschreibung: An optimization formulation is presented for timed Petri nets, based on a recently developed optimization solver where a satisfiability solver is integrated with constraint programming. The solver, called CP-SAT, is a part of Google's OR-Tools. The first optimization formulation includes an arbitrary number of concurrent sequences of operations, with shared, alternative, and local resources. A benchmark shows how much faster CP-SAT is compared to both an alternative SAT optimization solver and an A∗implementation. The optimization formulation is then generalized to mixed alternative and concurrent sequences. A comparison with a recent MILP formulation for timed Petri nets is presented, showing the strength of the proposed optimization formulation. Finally, an evaluation of an industrial-sized flexible manufacturing system, including uncontrollable events, demonstrates how efficient and easy to implement the proposed strategy is compared to existing results.
Dateibeschreibung: electronic
Zugangs-URL: https://research.chalmers.se/publication/542053
https://research.chalmers.se/publication/542053/file/542053_Fulltext.pdf
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  Label: Title
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  Data: Optimization of Timed Petri Nets using CP-SAT
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Lennartson%2C+Bengt%22">Lennartson, Bengt</searchLink>, 1956
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  Data: <i>17th IFAC Workshop on Discrete Event Systems, WODES 2024, Rio de Janeiro, Brazil IFAC Proceedings Volumes (IFAC-PapersOnline)</i>. 58(1):90-95
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  Data: <searchLink fieldCode="DE" term="%22Time-optimal+control%22">Time-optimal control</searchLink><br /><searchLink fieldCode="DE" term="%22satisfiability+solver%22">satisfiability solver</searchLink><br /><searchLink fieldCode="DE" term="%22constraint+programming%22">constraint programming</searchLink><br /><searchLink fieldCode="DE" term="%22timed+Petri+net%22">timed Petri net</searchLink>
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  Data: An optimization formulation is presented for timed Petri nets, based on a recently developed optimization solver where a satisfiability solver is integrated with constraint programming. The solver, called CP-SAT, is a part of Google's OR-Tools. The first optimization formulation includes an arbitrary number of concurrent sequences of operations, with shared, alternative, and local resources. A benchmark shows how much faster CP-SAT is compared to both an alternative SAT optimization solver and an A∗implementation. The optimization formulation is then generalized to mixed alternative and concurrent sequences. A comparison with a recent MILP formulation for timed Petri nets is presented, showing the strength of the proposed optimization formulation. Finally, an evaluation of an industrial-sized flexible manufacturing system, including uncontrollable events, demonstrates how efficient and easy to implement the proposed strategy is compared to existing results.
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        Value: 10.1016/j.ifacol.2024.07.016
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      – SubjectFull: Time-optimal control
        Type: general
      – SubjectFull: satisfiability solver
        Type: general
      – SubjectFull: constraint programming
        Type: general
      – SubjectFull: timed Petri net
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      – TitleFull: Optimization of Timed Petri Nets using CP-SAT
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              Y: 2024
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            – TitleFull: 17th IFAC Workshop on Discrete Event Systems, WODES 2024, Rio de Janeiro, Brazil IFAC Proceedings Volumes (IFAC-PapersOnline)
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