北京航空航天大学学报 ›› 2018, Vol. 44 ›› Issue (4): 802-809.doi: 10.13700/j.bh.1001-5965.2017.0225

• 论文 • 上一篇    下一篇

基于测试性D矩阵的多故障诊断与维修策略

田恒1, 段富海1, 樊亮2, 桑勇1, 史萌2   

  1. 1. 大连理工大学机械工程学院, 大连 116024;
    2. 中国航空工业集团公司西安飞行自动控制研究所惯性技术航空科技重点实验室, 西安 710065
  • 收稿日期:2017-04-13 出版日期:2018-04-20 发布日期:2017-09-18
  • 通讯作者: 段富海 E-mail:duanfh@dlut.edu.cn
  • 作者简介:田恒,男,博士研究生。主要研究方向:故障诊断与测试性分析;段富海,男,教授,博士生导师。主要研究方向:可靠性与测试性的设计分析。
  • 基金资助:
    航空科学基金(20150863003)

Multiple fault diagnosis and maintenance strategy based on testability D matrix

TIAN Heng1, DUAN Fuhai1, FAN Liang2, SANG Yong1, SHI Meng2   

  1. 1. School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China;
    2. Aviation Key Laboratory of Science and Technology on Inertia, AVIC Xi'an Flight Automatic Control Research Institute, Xi'an 710065, China
  • Received:2017-04-13 Online:2018-04-20 Published:2017-09-18
  • Supported by:
    Aeronautical Science Foundation of China (20150863003)

摘要: 针对复杂的多故障诊断问题以及多故障直接处理方法实现的难点,在测试性D矩阵基础上,提出了一种基于单故障化的多故障诊断与维修策略(MFDMSTS)。首先,在多故障假设下引入析取运算,定义了可隔离单故障和可隔离多故障,据此定义将多故障转化为单故障,并将转化的单故障与测试集组成新的D矩阵;然后,运用单故障诊断算法处理新的D矩阵,得到最优诊断树;最后,针对诊断树的不同叶子节点,提出了多故障诊断与维修策略。实例验算表明:MFDMSTS能降低平均诊断费用和平均诊断步数,并大幅降低误修率。

关键词: 测试性D矩阵, 多故障诊断, 析取运算, 多故障单故障化, 维修策略

Abstract: In view of the complicated multiple fault diagnosis problems and difficulties in the realization of multiple fault direct processing algorithm, on the basis of testability D matrix and single fault algorithm, a novel multiple fault diagnosis and maintenance strategy based on translating into single fault (MFDMSTS) is introduced. Firstly, under the assumption of multiple faults, disjunctive operation is introduced, and isolable single fault and isolable multiple faults are defined. According to the definitions, single fault, which composes a new D matrix with test set, is translated into from multiple faults. Secondly, single fault diagnosis algorithm is used to process the new D matrix, and the optimal diagnostic tree is obtained. Finally, a further multiple fault diagnosis and maintenance strategy is proposed for different leaf nodes in the diagnostic tree. Experimental verification demonstrates that MFDMSTS is an effective way to reduce average diagnostic cost and average diagnostic steps, and to greatly reduce the rate of maintenance error.

Key words: testability D matrix, multiple fault diagnosis, disjunctive operation, translating multiple faults into single fault, maintenance strategy

中图分类号: 


版权所有 © 《北京航空航天大学学报》编辑部
通讯地址:北京市海淀区学院路37号 北京航空航天大学学报编辑部 邮编:100191 E-mail:jbuaa@buaa.edu.cn
本系统由北京玛格泰克科技发展有限公司设计开发