| 起重机械制动器可靠度的不确定性分析 |
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| 引用本文： | 李鹤,张杰,张磊,闻邦椿.起重机械制动器可靠度的不确定性分析[J].东北大学学报(自然科学版),2011,32(9):1295-1298. |
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| 作者姓名： | 李鹤 张杰 张磊 闻邦椿 |
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| 作者单位： | 东北大学机械工程与自动化学院,辽宁沈阳,110819 |
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| 基金项目： | 教育部新世纪优秀人才支持计划项目(NCET-10-0271);机械系统与振动国家重点实验室开放课题(MSV-2011-19);教育部长江学者与创新团队发展计划项目(IRT0816);国家自然科学基金资助项目(51175071);中央高校基本科研业务费专项资金资助项目(N100503002,N100703001) |
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| 摘 要： | 针对传统的可靠度分析方法只是简单计算可靠度值,无法分析可靠度的准确性和每种故障因素对设备可靠度的影响问题,提出故障树和信息熵法相结合的方法对制动装置可靠度的不确定性进行分析.同时利用方差重要度的方法计算每种故障因素对系统可靠度不确定性的影响,通过提高对系统可靠度不确定性影响大的故障因素的可靠度的准确性,以提高系统可靠度估计的准确性,为起重机械制动器的可靠性分析和安全性设计提供了借鉴和参考.
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| 关 键 词： | 故障树 信息熵 起重机械 不确定性 可靠度方差 |
Uncertainty Analysis of Reliability for Crane Brake |
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| LI He,ZHANG Jie,ZHANG Lei,WEN Bang-chun.Uncertainty Analysis of Reliability for Crane Brake[J].Journal of Northeastern University(Natural Science),2011,32(9):1295-1298. |
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| Authors: | LI He ZHANG Jie ZHANG Lei WEN Bang-chun |
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| Institution: | (School of Mechanical Engineering & Automation,Northeastern University,Shenyang 110819,China.) |
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| Abstract: | Traditional analyzing methods can simply calculate the value of reliability but can not analyze its accuracy or obtain the effect of every fault factor on it.So a novel analyzing method combining fault tree with information fusion was proposed to study the uncertainty of the system reliability.Variance importance is presented to improve the accuracy of reliability.Effects on the device reliability of every fault factor are calculated,and the accuracy of the most significant factor reliability is improved to meliorate the accuracy of the system reliability.Finally,the efficiency and accuracy of the method are demonstrated through an uncertainty analysis example. |
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| Keywords: | fault tree information fusion crane uncertainty reliability variance |
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