A Petri net model for the design and performance evaluation of a flexible assembly system

作者：Hamid Ullah, Erik L.J. Bohez · 发表于：Assembly Automation · 年份：2008 · DOI：10.1108/01445150810904486 · 被引用次数：13 · 研究领域：Assembly Line Balancing Optimization、Flexible and Reconfigurable Manufacturing Systems、Manufacturing Process and Optimization

Purpose The purpose of this paper is to present a Petri net (PN) model based on assembly plan is presented for modeling a flexible assembly system (FAS) configuration, determining an optimal work‐in‐process (WIP), lead time, throughput, and utilization of each station. Design/methodology/approach PN model is developed for design, analysis, and performance evaluation of a FAS, keeping in view the assembly line balancing. PN is optimized using weighted WIP. The throughput is bounded by the utilization of the bottleneck machines. Findings The PN optimization gives minimum WIP corresponding to the maximum production rate. Minimum WIP leads to minimum lead time. The weighted arcs make the model simple and reduce the optimized number of kanbans. Moreover, the PN model pushes more inventory to the initial assembly phase. This reduces the total cost of the WIP. Research limitations/implications In the proposed PN model, the transportation times are included in the transitions times. In the future research, the proposed model can be extended for inclusion of transportation times for AGVs. Practical implications Using the PN model, the assembly manager may design, analyze, evaluate, and even optimize the layout of the assembly system for minimum WIP, maximum throughput, and reduced lead time. The determination of the total WIP, total number of stations in the assembly system, and the number of servers at each station may be helpful in factory floor management. The same cycle time is ma...