基于连续小波变换的滑移装载机驾驶室噪声分析

Noise Analysis of Cab of Skid Steer Loader Based on Continuous Wavelet Transform

以某型号滑移装载机为研究对象,基于连续小波变换对其驾驶室的噪声进行分析。在分析中,运用连续小波变换,得到噪声信号的能量分布,确定滑移装载机驾驶室的主要噪声源。通过分析确认,连续小波变换适用于时频特性明显的信号分析,非平稳的滑移装载机驾驶室噪声信号经过连续小波变换后,能够正确反映频率特性,同时可以保留时间特性。

Taking a certain type of skid steer loader as the research object,the noise of its cab was analyzed based on continuous wavelet transform.In the analysis,the continuous wavelet transform was used to obtain the energy distribution of the noise signal and determine the main noise source of the cab of the skid steer loader.Through analysis,it is confirmed that continuous wavelet transform is suitable for signal analysis with obvious time frequency characteristics.After continuous wavelet transformation,the noise signal in the cab of the non stationary skid steer loader can accurately reflect the frequency characteristics while retaining the time characteristics.