A Petri net-based Deadlock Control Policy for Flexible Assembly Systems

Authors:	Zhou MengChu, New Jersey Inst. of Tech., United States Wu Naiqi, Guangdong Univ. of Tech., China Roszkowska Elzbieta, Wroclaw Univ. of Tech., Poland
Topic:	1.3 Discrete Event and Hybrid Systems
Session:	Discrete Event and Hybrid Systems
Keywords:	Petri net, assembly system, deadlock avoidance, modeling and analysis

Abstract

This paper presents a Petri net-based method for deadlock control in flexible assembly systems (FAS). Instead of process-oriented modeling method, resource-oriented Petri nets are used. A new control policy is thus formulated and proved to outperform the existing one in the literature. The deadlock problem in FAS is often more difficult since deadlock can arise from improper base component flow and part flow, as well as ill-synchronized assembly operations.