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通过对 Haar小波系数与变频信号瞬时频率关系的分析 ,提出了基于 Haar小波分析的旋转机械高速启动过程振动信号瞬时频率的计算方法。并通过利用此方法得到的瞬时频率 ,对原信号利用内插法进行了重采样 ,将由此得到的信号进行阶比分析 ,可以对信号的各阶谱线实现很好的分离 ,解决了定频采样所带来的高速启动过程振动信号各阶谱线不能很好分离的问题
Based on the analysis of the relationship between the Haar wavelet coefficient and the instantaneous frequency of the frequency conversion signal, a method to calculate the instantaneous frequency of the vibration signal is proposed based on Haar wavelet analysis. By using the instantaneous frequency obtained from this method, the original signal is resampled by interpolation, and the resulting signal is then subjected to a stepwise analysis to achieve a good separation of the signal spectra and to solve the problem of fixed frequency Sampling caused by the high-speed start-up process vibration signal spectrum can not be a good separation of the problem