Parameterizations of all semi-strongly-stabilizable plants and of all semi-strongly-stabilizing controllers

抄録

When the control system is stabilized by a stable controller, the controller is said to be a strongly stabilizing controller. Using strongly stabilizing controllers, when an uncertainty in the plant or a step disturbance exists, the output of control system cannot follow the step reference input without steady state error. From this viewpoint, it is important to consider the design of controllers that have a pole at the origin and other poles in open left half plane. These controllers are called as semi-strongly-stabilizing controllers. From literature, it is not necessarily that there exists a semi-strongly-stabilizing controller for the plant. In this paper, we clarify parameterizations of all semi-strongly-stabilizable plants, and of all semi-strongly-stabilizing controllers.