A Sub-Optimal Control Policy in a Two-Product Door Manufacturing Line With Geometric Reliability Machines

作者：Kang, Ningxuan^*; Zhao, Cong; Li, Jingshan; Zheng, Li

来源：IEEE Robotics and Automation Letters, 2017, 2(1): 157-164.

DOI：10.1109/LRA.2016.2582925

• Intelligent and flexible manufacturing
• factory automation
• multi-product system
• Markov chain
• geometric model
• production control policy

Multiproduct systems are becoming more and more prevalent in modern manufacturing. In this paper, we introduce an application study of optimal control policy in a two-product door manufacturing line at an automotive assembly plant. In such a system, two types of doors for sedans and SUVs are produced and supplied to the sedan and SUV body shops, respectively. There is a nonnegligible setup time when the door type is changed. To study this system, a geometric machine reliability model is developed. Closed-form expressions of performance measures are derived and a sub-optimal control policy is presented to schedule product changeover so that maximal satisfaction to demands of both doors can be achieved. Finally, the results are validated in door production.

• 出版日期2017-1
• 单位清华大学