中文摘要：

为解决生产线维修费用高、可靠性低这两大突出问题，首先分析了生产线的特征及生产线维修管理的实践，依据20/80原则和生产批量方法，提出“对故障集中式批处理，减少分散维修的停机时间”的¨少维修思想；其次根据更新理论建立了维修费用模型，优化生产线预防维修间隔期，使单位时间内的总维修费用最低，同时建立可靠性模型，满足生产线各设备可靠性的要求；再次，建立了基于“维修费用一可靠性”的同步维修模型，满足生产线维修费用和可靠性的目标，并提出了该模型求解的算法。提出设备按预防维修间隔期大小进行分组、按月度修正生产线预防维修计划的方法，使得该模型的实用性更强。通过案例分析验证了该方法的有效性。

英文摘要：

To solve the problem of longer downtime and higher maintenance cost in automatic production line, the properties of the production line and its maintenance management were analyzed. The synchronization maintenance i dea of reducing the total downtime by the means of batch maintenance was put forward based on the principle of ＂20/80＂ and the method of mass production. According to the renewal theory, the maintenance costs model to opti mize Preventive Maintenance（PM） interval and minimize the total maintenance cost per unit time was established. A reliability model which satisfied the minimal reliability level of all equipment＇in production line was given. The group maintenance model was put forward based on cost-reliability, which minimized maintenance costs by grouping ma chine and determining the optimal PM interval of the grouped machine subject to a required minimal machine reliabil ity level. The solving algorithm for this model was also proposed. A case study was given to demonstrate the appli cability and the effectiveness of the proposed approach.