Simulation Designing and Parameter Optimization of Production System for an Engine Assembly Workshop Based on Witness

Based on thorough investigation for an engine assembly workshop,Kanban production system was imported and carried out.Some problems caused by implementing traditional push system,such as low production efficiency and equipment utilization rate and long average waiting time of order were solved by simulation and optimization.By comparing various performance indicators Kanban production system implemented before and after,it draws some conclusions that average order delay time is greatly reduced;the equipment utility rate of workshop is increased and comprehensive production benefit of workshop is improved obviously.Meantime,using parameter optimization,it studied further that the different values of safety factor and variation coefficient influence on performance indicators,such as throughput,work-in-process,average waiting time of order and operation rate etc.,of Kanban production system,which will provide a reference for parameter selection of implementation scheme.