单径或多径瑞利衰落信道仿真，IMC-PID是利用内模控制原理来对PID参数进行计算，电力系统暂态稳定程序，可以进行暂态稳定计算。- Single path or multipath Rayleigh fading channel simulation, The IMC- PID is using the internal model control principle for PID parameters is calculated, Power System Transient Stability Program, can be transient stability.