Design of controllers for time delay systems: Integrating and unstable systems

Abstract

The paper deals with design of controllers for integrating and unstable time delay systems. The proposed method is based on the Padé first order time delay approximation. The control system with two feedback controllers is considered. For controller design, the polynomial approach is used. Resulting continuous-time controllers obtained via polynomial equations and the LQ control technique ensure asymptotic tracking of step references as well as step disturbances attenuation. Simulation results are presented to illustrate the proposed method.