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 ' w7 A; W8 J6 I. K' q, _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? - a+ Z/ I7 f8 I3 V2 G; l