关键词: 预防性维护, 维护效率, 可靠性, 质量, 多目标决策, 建模

Abstract: To improve the utilization efficiency of maintenance resource,a multi-objective preventive maintenance model with single unit based on input-output ratio was set up.The direct maintenance cost was considered as input and the multi-objective maintenance effect integrating equipment's availability with product qualification rate was used as output in the model.By investigating the influencing mechanism of deteriorating quality-related components on equipment's failure rates and product quality degradation,the equipment's availability indexes based on proportional hazard model and the product qualification rate based on response model were established,and the weight coefficients allocated according to the amount of products affected by 1% change of each index was used to construct the multi-objective maintenance efficiency function.The optimal maintenance plan was achieved by maximizing the output per maintenance cost,and the proposed maintenance strategy could provide a new way of maintenance modelling and decision-making for the enterprise.

Key words: preventive maintenance, maintenance efficiency, reliability, quality, multi-objective decision-making, modeling