基于Petri网的CONWIP控制系统的建模与仿真

Modeling and Simulation of CONWIP Systems Based on Petri Net

基于Petri网理论,构建了CONWIP控制系统的分层模型.在此基础上,运用仿真软件Arena,对CONWIP、MRP和Kanban系统的制品数量、平均加工时间、平均作业率等指标进行了分析比较.结果表明:CONWIP系统最优,可有效控制在制品数量和有效利用机器产能.

A hierarchical Petri net model for CONWIP （constant work in process） production control systems was built. Based on this model, the CONWIP system was simulated by software Arena, and compared with the MRP （material requirement planning） system and the Kanban system in terms of the amount of WIP （work in process）, average processing time, and average operation ratio. The results show that the CONWIP system is superior to the other two systems, since it can control the amount of WIP effectively and bring the production capacity of machines into full play.