preventive maintenance time

The optimum preventive maintenance cycle of these components usually can not be obtained with common ways , especially when the life cycle , preventive maintenance time and subsequent maintenance time present dispersed distribution .

对于这种复杂系统，尤其是其寿命周期，预防维修时间及事后维修时间为离散分布时，其最佳预防维修周期难以用一般方法求得。

The problem of optimal specific gravity between corrective and preventive maintenance time is solved .

解决了维修时间中预防维修和事后维修各自所占的最优比重问题。

Finally , based on the case of Jinan-Liaocheng Expressway asphalt pavement , the proposed method to confirm the optimum preventive maintenance time and maintenance cycle was proved advanced and reasonable .

最后，结合济聊高速公路沥青路面的预防性养护案例分析，表明提出的最佳预防性养护时机与养护周期的确定方法是先进合理的。

Optimal Policy Research of Preventive Maintenance in Finite Time Horizon

有限时间区间预防性维修策略的优化

It gives a reliability assessment model for element longevity , preventive maintenance and repair time submitting to a random distribution , introduces customer interruption damage function and gives a calculation method of interruption cost in imperfect maintenance .

建立元件寿命、预防维修时间和修理时间服从任意分布的可靠性评估模型，引入用户停电损失函数研究系统在不完善预防维修情况下的停电损失；

Research on sequential preventive maintenance policy in finite time horizon

有限区间内设备顺序预防性维护策略研究

Many years ago , the preventive maintenance method based on time was applied to our shipping enterprises .

多年来，我国航运企业一直在实行以时间为基础的预防性维修体制。