control system - Electrical Engineering Stack Exchange There is no z transform for ZOH, since it is not a discrete-time system, it is continuous time system meant to model reconstruction of discrete time signal into continuous time signal
When to choose ZoH method over Tustin in Discrete design? Tustin: ZoH: Why am I getting so confused on this? I know the ZoH method includes the delay from the DAC and Tustin is just a straight up conversion from S->Z domain I can't wrap my head around which one to use as I always think when using the ZoH method is just repeats the DAC twice as a DAC will always be there