中文说明：被控对象为一电机传递函数，利用ODE45方法求解连续对象方程，采用PID设计控制器，得到正弦跟踪结果，此方法是针对连续系统的数字PID系统仿真。
English Description：
Transfer function of the controlled object as a motor, ODE45 method for solving the equation of continuous objects, design of PID controllers, be sinusoidal track your results, this method is for continuous system simulation of digital PID.