Integrating Failure and Economic Dependence for Maintenance of Electric Multiple Unit MultiComponent System

Abstract

Abstract: Abstract： In order to explore the effects of dependence among components on the maintenance plan of the system, based on the theory of correlation among components and relationship between components described in failure chains, components were numbered according to the failure level in the chains. Besides, the reliability model of each component in complex mechanical system was established. By dividing the maintenance costs of the components into fixed and variable costs, the economic relevance model was completed, the maintenance cost and maintenance time was treated as the optimal goals, and the group maintenance strategy was implemented with indefinite period for various components in the system. The application of genetic algorithms to optimize maintenance plan and the computational experiments demonstrate that the proposed model can get a proper maintenance schedule. The analysis of key sensitive parameters indicates that in setting reasonable lowest reliability, components with larger deterioration rate should be focused on and the flexible connection between components should be strengthened.

Key words: preventive maintenance, failure dependence, economic dependence, sensitivity, maintenance plan

CLC Number:

TH 17

WANG Hong,DU Weixin,LIU Zhilong,YANG Xinzhu,LI Zhongxue. Integrating Failure and Economic Dependence for Maintenance of Electric Multiple Unit MultiComponent System [J]. Journal of Shanghai Jiaotong University, 2016, 50(05): 660-667.

References

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