有限维修人员约束下订单驱动的离散制造系统视情维修调度研究

在订单驱动的多设备离散制造系统中，企业订单量会影响生产设备的衰退过程和维护需求，维修人员作为多台生产设备共享的有限维护资源会约束多设备制造系统的维护计划，目前针对多设备制造系统的视情维修研究并没有充分关注订单量和有限维修人员这两个因素。本项目将基于历史故障数据和实时状态监测数据，研究订单量和设备间依赖性对生产设备衰退过程的影响，建立修复非新维护下订单驱动的制造系统中生产设备的衰退演化模型；研究有限维修人员和设备间依赖性对多设备制造系统维护时间和维护成本的影响，建立有限维修人员约束下制造系统维护调度效率性和经济性性能指标的数学模型；研究设备间依赖性对多设备制造系统维护策略的影响，提出多设备制造系统的双阈值视情成组维修策略并优化维修人员人数；在上述理论研究基础上对所提出的模型和方法进行仿真验证。本项目的研究对订单驱动的离散制造企业提高维护效率和降低维护成本具有重要的理论意义和实际应用价值。

In order-driven multi-unit discrete manufacturing systems which consist of multiple machines, the order quantity of the enterprise influences the deterioration processes and the maintenance requirements of machines. Besides, as maintenance resources shared by multiple machines, limited maintenance workers restrain the maintenance planning of multi-unit manufacturing systems. Existing studies on the condition-based maintenance scheduling for multi-unit manufacturing systems have not paid enough attention to the order quantity and limited maintenance workers. Based on historical failure data and real-time monitoring data, firstly, this project studies the influence of the order quantity and dependencies among machines on the deterioration processes of machines, and proposes the deterioration models of machines under imperfect maintenance in order-driven manufacturing systems. Secondly, this project studies the influence of limited maintenance workers and dependencies among machines on maintenance time and maintenance cost, and proposes the mathematical models of the efficiency and economic performance indices of the maintenance scheduling for multi-unit manufacturing systems under the constraint of limited maintenance workers. Thirdly, this project studies the influence of dependencies among machines on the maintenance policy for multi-unit manufacturing systems, proposes a two-threshold-based condition-based group maintenance policy for multi-unit manufacturing systems, and optimizes the number of maintenance workers. Finally, the proposed models and methods are validated by simulations. This project is of great significance, both theoretically and practically, for order-driven discrete manufacturing enterprises to improve the maintenance efficiency and reduce the maintenance cost.