关键词: 性能可靠度约束, 视情维修策略, 半更新周期, 维修概率, 稳态概率密度

Abstract: For the single-equipment production system with detectable degradation and limited performance reliability,a stochastic programming model based on condition-based maintenance policy was developed,in which the detection period threshold and preventive maintenance threshold were decision variables,performance reliability was the constraint,and the minimizing the long-term average cost rate was the objective function.Through numerical simulation experiments under two conditions,namely with and without performance reliability constraint,the effects of the model's parameter variations under the two conditions on the optimization results and the performance reliability under the optimal solution were compared.The results showed that it was necessary to introduce the constraint of performance reliability to the maintenance decision-making model,and the lower bound of performance reliability threshold within a certain range could guarantee the equipment to have both high performance reliability and a low increase in the long-term average maintenance cost rate.

Key words: performance reliability constraint, condition based maintenance, semi-regenerative cycle, maintenance probability, stationary probability density