本源代码用来求解机床振动（时间-加速度）信号采集过后的数据，求出其平均幅值，并绘图-This source code is used to solve machine tool vibration (time)- acceleration signal after the acquisition of data, find out the average amplitude, and drawing

根据实测加速度振动信号，求取功率谱密度，为疲劳分析提供数据支撑(According to the measured acceleration vibration signal, the power spectrum density is obtained, providing data support for fatigue analysis.)

求振动信号功率谱的两种代码，一种周期法，一种AR_pyuler法，支持Excel和text读取(Two codes for calculating the power spectrum of vibration signal)