Design of controllers for delayed integration processes using RMS ring

Abstract

This contribution deals with design of controllers for integrating processes with time delay. In contrast to many other methods, the proposed method is not based on the time delay approximation. A control structure combining standard 1DOF and 2DOF control structures is considered. The control design is performed in the R(MS) ring of retarded quasipolynomial (RQ) meromorphic functions - an algebraic method based on the solution of the Bezout equation with Youla-Kucera parameterization is presented. Final controllers are of so-called anisochronic type and ensure feedback loop stability, tracking of the step reference and load disturbance attenuation. Among many others tuning methods, the dominant pole assignment method is adopted.