Volterra级数频谱非线性系统故障诊断方法  

Research on Fault Diagnosis Method of Nonlinear System Using Volterra Series Model

作　　者：李斌[1,2] 吕永健[1,2] 孔韬[1,2] 

机构地区：[1]空军工程大学工程学院,陕西西安710038 [2]空军驻陕西飞机工业(集团)有限公司军事代表室,陕西汉中723213

出　　处：《火力与指挥控制》2008年第7期149-152,共4页Fire Control & Command Control

摘　　要：介绍了故障诊断技术的基本概念,重点阐述了非线性系统Volterra级数模型的原理及其在故障检测中的应用,并基于这一方法设计了飞机刹车系统惯性传感器故障检测设备。在这一应用系统中,被测系统的故障特征是广义频率响应函数GFRF(Generalized Frequency Response Functions)谱特征。简要介绍了故障诊断的方法,在工程应用实现中设计了相关的硬件电路,实验结果说明了此诊断方法是有效可行的。The basic conception of fault diagnosis is introduced. Especially, the theory of nonlinear Analysis Volterra series model and its application in the field of fault diagnosis . Based on this theory ,the design of aeroplane inertial sensor fault diagnosis instrument has been accomplished. In this system ,the GFRF （Generalized Frequency Response Functions） spectral features are used as the fault features. The method of diagnosis of the system. The design of the instrument＇s hardware is also provided. Finally the experiment results indicate that the presented method is efficient.

关 键 词：非线性系统 故障诊断 广义频率响应函数 DSP 

分 类 号：TP206.3[自动化与计算机技术—检测技术与自动化装置]