带有交货期时间窗的生产与维护联合调度优化

为探讨拉式生产环境下设备故障对准时交货的影响,建立了单设备预防性维护和生产调度联合优化模型.提出一种提前/拖期惩罚成本隶属度函数,同时选用简单维修和更换2种不同的维护方式,以具有交货期时间窗的提前/拖期惩罚成本与维护成本之和为优化目标,决策工件加工顺序和维护周期.提出一种新的算法LSA(LongestShortest Processing Time Based Algorithm),与遗传算法(GA)结合,采用GA-LSA对模型优化求解,与枚举算法和改进GA比较,证明其有效性.通过不同问题规模下联合优化分别与独立优化和单一维护方式联合优化方法进行对比,结果表明,相对其他2种方法,所提出的方法更加有效.

Integrating Production Scheduling and Preventive Maintenance for a Single Machine with Due Window

Abstract： In order to explore the effects of machine failures on JIT delivery in pull environment, a combination model was proposed to jointly determine PM planning and production scheduling of a single machine. A new earliness/tardiness penalty membership function was proposed, and two kinds of PM-simple repair and replacement were considered. The earliness/tardiness penalty cost with due window and maintenance cost were included in the objective function. A new algorithm named GA LSA based on GA was proposed to optimize the model. The proprosed model was compared with the enumeration algorithm and genetic algorithm to show its effectiveness. Computational experiments show the performance of this integrated model is satisfactory, compared with the conventional independent decision model and integrted model with single PM mode.