Derivative of state '1' in block 'A9yue12/PID Controller/Integrator' at time 0.0 is not finite. The simulation will be stopped. There may be a singularity in the solution. If not, try reducing the step size (either by reducing the fixed step size or by tightening the error tolerances)Component: Simulink | Category: Block error / D( y3 ~8 R+ M/ ^8 B- S只要输入信号进到有积分项的模块中就会出现这个,是输入信号的问题?输入信号不能过零? . U5 j/ Y; e: W0 e