【摘要】 本文介绍了小波分析的理论方法,并把小波分析方法应用到了行驶车辆振动的分析中,即:通过二进离散小波变换,把实际振动信号进行多层小波分解,使异常信号和非平稳高频信号得到良好的时间定位和图形显示,并把信号的路面激励与车体振动分离开来。更多还原

【Abstract】 The theory of wavelet is presented and the method of wavelet analysis is used in vibrational signal analysis.of moving vehicle in this paper. By dyadic discrete wavelet transform, the real signal is decomposed for several wavelet transform layer. As a result, the abnormal signals and unsteady high frequency signal are better localized and illustrated, and the road exitation can be separated from vibration of car body for better evaluation of vehicle performance.更多还原