自构建D4小波检测和诊断发动机故障之研究

The Construction of the D4 Wavelet Detection and Study of the Engine Fault Diagnosis

在小波分析理论基础上,为了从噪声信号中检测和诊断出小车发动机连杆故障,文章采用数据统计、采集样本等方法,通过MATLAB平台和计算机仿真实验,得出应用小波变换可以从噪声信号中检测和诊断出小车发动机连杆表征故障间歇性撞击声的结论。

For examines and diagnoses the car engine connecting rod breakdown from the noise signal base on the wavelet analysis,this paper uses methods and so on data statistics.gatherlng sample and so on methods, through the MATLAB platform and computer simulation experiment, obtains conclusion that it may examine and diagnose of the car engine connecting rod attribute breakdown intermittent impact noise using the wavelet tranformation from the noise signal.