tracking

代码说明：

说明：  确定性系统中建立一个跟踪系统让稳态误差变成0 ( This script demonstrates designing a tracking system with feedback and gain compensation to bring steady-state error to 0 and a settling time of 2.5 seconds. The response to a unit step is simulated and plotted to compare the system before and after compensation. This uses the STEP function from the system id toolbox and also ODE45 function to compute the step response.)