小波分析提取伺服驱动器故障特征向量的仿真研究

Simulation study on extraction method of the fault eigenvectors of servo driver

本文以伺服驱动器为研究对象,对其功率主电路中开关管开路故障特征向量的提取方法进行仿真研究。提出一种通过小波多分辨率分析从伺服驱动器的输出电流信号中提取开关管开路故障特征向量的方法。在Matlab/Simulink中对某型伺服驱动器进行建模,并对所提出的故障特征向量提取方法进行仿真验证,仿真结果表明所采用方法的可行性和有效性。

The servo driver is taken as research object and simulation study is conducted on the extraction method of the open circuit fault eigenvectors of the power transistors in the inverter of the servo driver.A method by wavelet multi-resolution analysis of the output current signals of the servo driver is put forward to extract the open circuit fault eigenvectors of the power transistors.Modeling for one type of servo driver is completed in Matlab/Simulink and the extraction method of the open circuit fault eigenvectors is simulated.The results of simulation indicate the feasibility and effectiveness of the proposed method.