机电系统故障—时间应力的关联分析技术研究

时间应力测量装置技术是一种测量和存储各种应力数据以及对这些数据进行挖掘与分析的技术。简要介绍了时间应力的基本概念及其研究应用的发展历程。在此基础上,提出了基于故障模式、影响及应力分析(FMESA)的时间应力与机电系统故障的定性关联分析方法和基于多元logistic回归的定量关联分析方法。最后,以某型航空地平仪为对象进行了案例研究。案例分析结果表明,文中提出的时间应力与机电系统故障的关联分析方法能分析出影响系统性能的关键应力因素,为机电系统的故障诊断及故障预测提供基础。

Study on Relation Analysis Technology between Time Stress and Electromechanical System Faults

Time stress measurement device(TSMD) technology is a measurement and recording technology that can be used for stress history recording and data analyzing.The principle and development history of the TSMD were introduced in brief.Then,some relation analysis technologies between time stress and electromechanical system faults based on FMESA and logistic regression were studied.In order to improve the validity of our technologies,a case about the gyro was studied.The results of the case show that the relation analysis technologies between time stress and electromechanical system faults in this paper can effectively find out the electromechanical system faults induced by critical stresses,and can be applied in the fault diagnosis and prediction of electromechanical system.