Design of a controller for the turret system using H∞ synthesis

This paper presents the results of a controller design exercise on the turret test fixture using the H∞ synthesis method. The controller is required to provide good step and ramp tracking performance in the presence of firing disturbances. An important step in this design exercise has been the formulation of an appropriate synthesis model. We describe this process in great detail. Results of the linear analysis and simulation of the closed-loop response (with both linear and non-linear plant models) are presented.