计算机应用 ›› 2014, Vol. 34 ›› Issue (12): 3446-3450.

• 人工智能 • 上一篇    下一篇

基于模糊贝叶斯网的危害性分析方法

翟胜1,师五喜2,3,修春波3   

  1. 1. 天津工业大学 机械工程学院,天津 300387
    2. 天津市现代机电装备技术重点实验室,天津 300387
    3. 天津工业大学 电气工程与自动化学院,天津 300387
  • 收稿日期:2014-06-27 修回日期:2014-08-27 出版日期:2014-12-01 发布日期:2014-12-31
  • 通讯作者: 翟胜
  • 作者简介:翟胜(1969-),男,辽宁大连人,高级工程师,博士研究生,主要研究方向:机电一体化设备、系统可靠性分析;师五喜(1964-),男,甘肃秦安人,教授,博士生导师,主要研究方向:机电一体化设备、机器人、智能控制;修春波(1978-),男,黑龙江大庆人,副教授,博士,主要研究方向:智能控制、模式识别。
  • 基金资助:

    国家自然科学基金资助项目

Criticality analysis method based on fuzzy Bayesian networks

QU Sheng1,SHI Wuxi2,3,XIU Chunbo3   

  1. 1. School of Mechanical Engineering, Tianjin Polytechnic University, Tianjin 300387,China;
    2. Tianjin Key Laboratory of Advanced Mechatronics Equipment Technology, Tianjin 300387, China
    3. School of Electrical Engineering and Automation,Tianjin Polytechnic University, Tianjin 300387,China;
  • Received:2014-06-27 Revised:2014-08-27 Online:2014-12-01 Published:2014-12-31
  • Contact: QU Sheng

摘要:

针对传统的故障模式、影响与危害性分析(FMECA)方法不足的问题,提出了一个基于模糊贝叶斯网的危害性分析方法。该方法将模糊理论与贝叶斯网推理技术结合起来,用三角模糊数来描述专家的模糊评分值;通过模糊集合映射,将其转化为评级的模糊子集;以置信结构的模糊规则,表示故障模式的属性与危害度之间的关系;利用贝叶斯网络推理算法综合置信结构的模糊规则,通过贝叶斯网推理得到模糊子集形式的危害度,再经过去模糊计算,得到故障危害等级的清晰值,从而确定故障模式的危害程度。实验结果表明,所提方法能够提高传统分析方法的准确性和应用范围。

Abstract:

Considering the defects of traditional Failure Modes,Effect and Criticality Analysis (FMECA), a criticality analysis method based on fuzzy Bayesian networks was proposed. This approach combined the fuzzy theory with Bayesian network techniques, and fuzzy judgments of experts were described using triangular fuzzy numbers which were transformed into forms of fuzzy subsets of ranking through mapping of fuzzy sets. The fuzzy rules with belief structure were used to represent the relationship between the properties and hazards of the failure modes. The Bayesian network inference algorithms were used to synthesize the fuzzy rules of belief structure, and the hazard degree in the form of fuzzy subsets was obtained by Bayesian inference, through defuzzification calculation, a precise value of fault hazard ranking was gained to determine the hazard degree of the failure mode. The experimental results show that the proposed method is able to improve the accuracy and application range of the traditional analysis method.

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