东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2017, Vol. 38 ›› Issue (5): 706-711.DOI: 10.12068/j.issn.1005-3026.2017.05.020

• 机械工程 • 上一篇    下一篇

摆线包络行星减速机模糊故障树分析

李朝阳， 姜耘哲， 陈兵奎   

  1. (重庆大学 机械传动国家重点实验室， 重庆400030)
  • 收稿日期:2015-12-16 修回日期:2015-12-16 出版日期:2017-05-15 发布日期:2017-05-11
  • 通讯作者: 李朝阳
  • 作者简介:李朝阳(1977-)，男，河南郑州人，重庆大学讲师，博士； 陈兵奎(1966-)，男，四川双流人，重庆大学教授.
  • 基金资助:

    国家自然科学基金资助项目(51575062)； 广东市科技计划项目(2014Y2-00217).

Fuzzy Fault Tree Analysis of the Cycloid Enveloping Reducer

LI Chao-yang， JIANG Yun-zhe， CHEN Bing-kui   

  1. The State Key Laboratory of Mechanical Transmission， Chongqing University， Chongqing 400030， China.
  • Received:2015-12-16 Revised:2015-12-16 Online:2017-05-15 Published:2017-05-11
  • Contact: LI Chao-yang
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摘要：

根据新型精密减速机的结构特点，建立了故障树分析模型.充分考虑新型精密减速机在实际工况下故障现象、故障概率和故障原因等不确定性因素，将模糊数学理论引入故障树分析;采用三角型模糊数来描述减速机故障原因的失效概率，结合λ截集理论和扩张原理，计算得到减速机失效的模糊概率和故障原因的模糊概率重要度.分析结果表明，该新型精密减速机可靠性高;滚子、滚道和摆线齿廓的磨损，曲柄轴支撑轴承的失效是影响精密减速机可靠性的关键因素.

关键词: 摆线包络行星减速机, 精密传动, 可靠性, 模糊故障树

Abstract:

Based on the structural characteristics of the new cycloid enveloping reducer， a fault tree model of the reducer was established. Considering such uncertain factors of the new cycloid reducer as fault phenomenon， fault probability and fault cause under actual conditions， the fuzzy sets theory was introduced into fault tree analysis. The triangular fuzzy numbers were utilized to qualify the probability of fault causes. Mean while， the fuzzy probability of failure and fuzzy importance measure of fault causes were calculated based on the λ cut-set theory and interval arithmetic. The results showed that the cycloid enveloping reducer has a high reliability and the wear of rollers， raceways and cycloid teeth profiles， and the failure of crankshaft bearings are the key influence factors for the reliability of the cycloid enveloping reducer.

Key words: cycloid enveloping reducer, precision transmission, reliability, fuzzy fault tree

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