A New Structure and Design of High Order Controllers for First Order Plants

— A New Structure and Design of Internal Model Based Controllers —

Abstract

This paper newly investigates structure and design of high order controller for first order plants that are often encountered in industry applications dealing with mechanical or electrical systems. The proposed structure of the high order controller is characterized by its numerator having full degrees of design freedom. Generally speaking, as order of the controller increases, its design guarantying closed loop stability becomes complicated and difficult. However, the proposed design method is analytical, simple and can assign arbitrary loop stability to the closed systems.