›› 2012, Vol. 42 ›› Issue (05): 1157-1162.

• 论文 • 上一篇    下一篇

采用重要度和模糊推理的数控刀架危害性分析

张英芝1, 郑珊1, 申桂香1, 郑锐2, 谷东伟1, 牛序磊1   

  1. 1. 吉林大学 机械科学与工程学院,长春 130022;
    2. 中国船舶重工集团公司 七一六研究所,江苏 连云港 222006
  • 收稿日期:2012-02-21 出版日期:2012-09-01 发布日期:2012-09-01
  • 通讯作者: 申桂香(1957-),女,教授,博士生导师.研究方向:数控机床可靠性.E-mail:shengx@jlu.edu.cn E-mail:shengx@jlu.edu.cn
  • 基金资助:
    国家自然科学基金项目(51175222).

Criticality analysis for CNC turret adopting importance and fuzzy reasoning

ZHANG Ying-zhi1, ZHENG Shan1, SHEN Gui-xiang1, ZHENG Rui2, GU Dong-wei1, NIU Xu-lei1   

  1. 1. College of Mechanical Science and Engineering, Jilin University, Changchun 130022,China;
    2. Group No. 716 Research Institute,China Shipbuilding Industry Corporation, Lianyungang 222006,China
  • Received:2012-02-21 Online:2012-09-01 Published:2012-09-01

摘要: 以数控刀架系统为研究对象,基于美国国防部军用标准MIL-STD-1629A的故障模式、影响和危害性分析(FMECA)的思路,提出了一种改进的FMECA分析方法。该方法以重要度来判断严酷度,以专家权重评分数确定危害度,最后采用专家模糊推理进行危害水平的综合评估,有效地找出了影响刀架系统可靠性的薄弱环节,为对其进行可靠性改进设计以及制定合理的维修策略提供了科学依据。

关键词: 机床, 重要度, 权重因数, 模糊推理

Abstract: Based on the most popular standard called MIL-STD-1629A from the U.S. Department of Defense, an improved FMECA method was presented to investigate the CNC turret. To avoid the ambiguity of subjective evaluation, the importance degree was used to judge severity, weighting factors of experts were introduced to determinate the criticality, and a fuzzy logic-based expert system was adopted to evaluate the risk level comprehensively. The weak link affecting turret system reliability was found out, which provides a scientific basis for improved design and maintenance policy.

Key words: machine tool, importance degree, weighting factor, fuzzy reasoning

中图分类号: 

  • TG659
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