Hi, i want to design an inverter with controllable output AC voltage. To check PID controller action i require full bridge inverter transfer function as that is my plant in model. full bridge inverter has DC value and 4 gate signals as input. It has AC wave as output. i am not getting this tranfer function to verify PID action. as i have seen examples given by mathworks, it seems that it requires transfer function to verify PID control action.please suggest a way.