基于历史数据的测试任务约简和故障诊断

Journal of Systems Engineering and Electronics ›› 2010, Vol. 32 ›› Issue (1): 205-210.

基于历史数据的测试任务约简和故障诊断

方甲永1，肖明清1, 王磊1, 李斌1,2

（1. 空军工程大学工程学院自动测试系统试验室，陕西西安 710038；2. 空军驻江苏地区军事代表室，江苏南京 210016）

出版日期:2010-01-23 发布日期:2010-01-03

Test tasks reduction and fault diagnosis based on historical data

FANG Jia-yong1，XIAO Ming-qing1，WANG Lei1，LI Bin1,2

（1. ATS Lab., Engineering Coll., Air Force Engineering Univ., Xi’an 710038, China；2. The Military Representatives of Air Force Equipment Dept. in Jiangsu, Nanjing 210016, China）

Online:2010-01-23 Published:2010-01-03

摘要/Abstract

摘要：

针对部队航电组件测试任务繁重、故障定位率低的问题，提出一种利用历史数据来简化测试任务、提高故障定位率的方法。利用粗糙集信息系统理论，建立了航电组件故障信息系统模型；基于测试任务辨识函数和诊断允许误差对测试任务进行约简；基于最短测试时间选出最优测试任务集；利用贝叶斯最大后验概率进行故障诊断推理，将诊断问题归结为不等式约束极值问题；用0-1规划隐数算法求得最优解。最后以某型飞机惯导部件为例验证了方法的快速有效性。

Abstract:

Aiming at the problem of complex test tasks and low fault location accuracy to avionics, a method based on historical data is proposed to reduce the test tasks and improve the fault location accuracy. A model of the avionics information system is built by using the rough set theory; the test tasks are reduced by using the novel discernibility function and minimum diagnosis error; the optimized test task set with minimum test time is chosen; the Bayes maximal posterior probability is introduced into fault diagnosis reasoning and the problem is concluded as an extremum problem with inequality constraints; the optimized result is got by the 0-1 programming implicit enumeration. The application to the inertial navigation component proves that the method is fast and effective.

方甲永1，肖明清1, 王磊1, 李斌1,2. 基于历史数据的测试任务约简和故障诊断[J]. Journal of Systems Engineering and Electronics, 2010, 32(1): 205-210.

FANG Jia-yong1，XIAO Ming-qing1，WANG Lei1，LI Bin1,2. Test tasks reduction and fault diagnosis based on historical data[J]. Journal of Systems Engineering and Electronics, 2010, 32(1): 205-210.