JOURNAL OF MECHANICAL & ELECTRICAL ENGINEERING
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Modeling and analysis about reliability of rheostatic brake system in multiple failure modes
Published:2016-06-27
author:DING Hao, SHENG Bu yun, WANG Lin, LUO Dan
Browse: 2985
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Modeling and analysis about reliability of rheostatic brake system in multiple failure modes
DING Hao, SHENG Bu yun, WANG Lin, LUO Dan
(School of mechanical and electrical engineering, Wuhan University of Technology, Wuhan 430070, China)
Abstract: Aiming at the modeling issues of rheostatic brake system malfunction in multiple failure modes, the modeling methods of rheostatic brake system and parameter estimation methods of the model were researched. The statistics of wear parts in rheostatic brake system and corresponding failure modes were collected. The modeling method in multiple failure modes based on the fault tree and the parameter estimation method based on the least squares method and genetic algorithm were proposed. Then reliability was analyzed and lifetime was predicted by using the model of system and parts models. The results indicate that considering the multiple failure modes can visually reveal reliability trends affected by failure modes, which favors product maintenance and life expectancy and provides a basis for developing effective measures to improve reliability.
Key words: multiple failure modes; fault tree; rheostatic brake system; reliability
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