说明：  利用奇异值分解方法对振动信号进行降噪处理，提高信噪比，获得信号中感兴趣的成分，为后续信号处理过程做准备
(The singular value decomposition method is used to reduce the noise of the vibration signal, improve the signal-to-noise ratio, obtain the components of interest in the signal, and prepare for the subsequent signal processing process)