中文说明：
频域的模态参数识别方法之一，可以对振动信号进行分析处理，得出结构的固有频率，阻尼比，振型系数，方法很好，程序完整
English Description：
One of the modal parameter identification methods in frequency domain can analyze and process the vibration signal, and get the natural frequency, damping ratio and mode coefficient of the structure. The method is very good and the program is complete