IMC-PID是利用内模控制原理来对PID参数进行计算，随机调制信号下的模拟ppm，本科毕设要求参见标准测试模型，给出接收信号眼图及系统仿真误码率，微分方程组数值解方法。- The IMC- PID is using the internal model control principle for PID parameters is calculated, Random ppm modulated analog signal under Undergraduate complete set requirements refer to the standard test models, The received signal is given eye and BER simulation systems, Numerical solution of differential equations method.