利用Blackman窗函数对工频信号进行加窗FFT后校正计算出基波和谐波的幅值、频率和初始相角。-Blackman window function using frequency signal windowed FFT is calculated after the correction of fundamental and harmonic amplitude, frequency and initial phase angle.

用来求解圆管耦合振动的基频及响应的MATLAB程序-Used to solve the fundamental frequency of the tube and coupled vibration response of the MATLAB program

频域有限差分法（FDFD）做出色散特性曲线图(Frequency domain finite difference method (FDFD) to make the dispersion characteristic curve)

这个例子显示了电容电流中断期间的电压升高。 假设： 1.断路器可以在每次重新起弧后中断第一个电流零点的高频电流 2.重击发生在基频的每半个周期。 重击时间由重击组件（当前零点与重新起弧之间的相位角之间的相位角）指定(This example shows the voltage escalation during capacitive current interruption. assumptions: 1. the breaker can interrupt the h