进气歧管装配生产线的Witness仿真与优化

Witness-Based Simulation and Optimization Of Intake Manifold Assembly Line

对汽车零部件公司的一条进气歧管装配生产线进行改进,为此利用Witness建模仿真,发现资源利用的问题并优化。首先介绍案例背景;其次提出建模假设并设计仿真参数;第三运行仿真并基于产出数据指出问题症结,即等待时间过长、机器和人员利用率都不高;第四采用Witness优化模块二次设计了仿真模型,采用模拟退火算法确定了较优的焊接片进入时间间隔、工人数量和职责分担,最终生产周期缩短67%,产能提高11%,人员从原来的6人缩减到4人,将仿真软件与算法结合运用,能为企业提高劳动生产率、减少运营成本提供优化和改善的决策依据和新思路。

This paper taking an intake manifold assembly line of an auto parts company as the research ob- ject, uses Witness software modeling and simulation to find the problem of resource utilization and optimize it. Firstly, the case background is described. Secondly, the modeling assumptions are proposed and the Witness simulation parameters are designed. Thirdly, the simulation is based on the output data to indicate the crux of the problem, that is, the waiting time is too long, the machine and personnel utilization rate are not high; At last, the simulation model for optimization was designed. Simulated annealing algorithm was used to determine the optimal time interval, number of workers and responsibility sharing. The production cycle is reduced by 67 %, the productivity is increased by 11%, and the staff is reduced from 6 to 4. Combining the simulation, it can provide the basis and new ideas for the enterprises to improve the labor productivity and reduce the operation cost.