• 论文 •    

柔性制造系统一种次优化的死锁控制设计

朱森,周刚,李志武   

  1. 西安电子科技大学 机电工程学院,陕西西安710071
  • 出版日期:2010-09-15 发布日期:2010-09-25

Suboptimal deadlock control policy for flexible manufacturing systems

ZHU Sen, ZHOU Gang, LI Zhi-wu   

  1. School of Mechatronics Engineering, Xidian University, Xi'an 710071, China
  • Online:2010-09-15 Published:2010-09-25

摘要: 为解决柔性制造系统中的死锁问题,以受控系统的许可行为作为指标,根据Petri网基本信标理论,提出了一种次优化的活性控制器设计方法。根据基本信标和从属信标的可控性关系,通过调整控制库所的初始标志,获得了具有较多许可行为的活性Petri网控制器。与文献中其他方法相比,所提的控制策略具有更好的许可性。

关键词: 柔性制造系统, Petri网, 死锁控制, 信标

Abstract: To solve deadlock problem in flexible manufacturing systems, taking the permissive behavior of controlled system as an criterion, and according to elementary siphons of Petri nets, a suboptimal supervisor design method was proposed. Based on control relationship between elementary and dependent siphons, a liveness-enforcing Petri net supervisor with more permissive behavior was derived through properly setting the initial marking of monitors. Compared with the existing methods, the proposed strategy was more permissive.

Key words: flexible manufacturing system, Petri nets, deadlock control, siphon

中图分类号: