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 3 r& y5 u/ z% m" c7 L5 v8 K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? 0 R2 e3 F" U f! R4 F6 g* q% _4 C- F1 R