A Z-Domain Controller Design Method for Sampled-Data Systems Having Feedback Dynamics

A design method for sampled-data systems having dynamics in the (single) feedback path is described. The method is an alternative to such well-known methods as those of Ragazzini, Dablin, and Kalman in which feedback dynamics are difficult to handle. With the method described here, the designer has substantial flexibility in specifying the closed-loop transfer tunction and is guaranteed a stable controller for a wide class of systems. The method is described and an application example presented.