小波分析在动态系统故障诊断中的应用  

Application of Wavelet Analysis in Fault Diagnosis of Dynamic System

作　　者：曹祥宇[1] 乔俊峰[2] 

机构地区：[1]第二炮兵工程学院,西安710025 [2]西安电子科技大学理学院,西安710025

出　　处：《弹箭与制导学报》2009年第5期257-259,共3页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：提出了一种基于小波分析的动态系统故障诊断方法,在Matlab/Simulink中建立动态系统的数字仿真模型,利用小波分析中的多分辨分析理论对该模型的输出信号进行处理,并依据数据处理结果对系统故障进行诊断。结果表明,该方法不仅可以有效去除测试结果中的噪声,而且能够实现对故障的快速诊断。A method of dynamic system fault diagnosis based on wavelet analysis was presented. The simulation model of dynamic system was built in Matlab/Simulink, and MRA theory of wavelet analysis was used to process the output signals, thus, dynamic system fault diagnosis was implemented according to the data processing result. The simulation result shows that the noise in the test data can be eliminated effectively and quick fault diagnosis can be realized with the method.

关 键 词：小波分析 动态系统 故障诊断 多分辨分析 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]