Journal of System Simulation ›› 2015, Vol. 27 ›› Issue (12): 2927-2934.

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Modeling and Scheduling of Reentrant Automatic Assembly Equipment Based on CPN Tools

Zhang Mei1,2, Chen Guangsen1,2, You Jia1,2   

  1. 1. School of Automation Science and Control Engineering, South China University of Technology, Guangzhou 510640, China;
    2. Engineering Research Centre for Precision Electronic Manufacturing Equipment of Ministry of Education,South China University of Technology, Guangzhou 510640, China
  • Received:2014-08-26 Revised:2015-03-06 Online:2015-12-08 Published:2020-07-30

Abstract: The idea about treating automatic immunoassay detection equipment as a reentrant dual-armed automatic assembly equipment was brought forward. Using timed colored Petri nets (TCPN) to model the equipment according to its detection, the performance of model and simulation experiment were evaluated. To optimize the detection process, DPC dynamic feeding strategy and LSPON, FIFO scheduling strategy were designed. Based on that, a hybrid control strategy was proposed to schedule the model more efficiently. Batch-detecting projects of different scale examples were scheduled on the platform of CPN tools according to the strategies above. The simulation results illustrate the reasonability and feasibility of the combination of TCPN model and strategies mentioned previously.

Key words: reentrant automatic, assembly equipment, modeling and scheduling, Petri nets, CPN tool

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