Contributions of Controllers Tuning in the Multiple-Loop Feedback Control System with Two Contours with Inertia

Abstract

A tuning algorithm of linear controllers P, PI, PID in multiple-loop feedback control systems is proposed in this paper. The control objects consist of two subprocesses, which are described by dynamical models with internal (second order). The controllers in the internal contour and in the external contour are tuning according the maximal stability degree method. In the internal contour is used controllers P and PI, in the external contour is used controllers P, PI, PID. There are using the iterative procedure, for determinate the optimal parameters of controllers P, PI, PID. The tuning algorithm of controllers represents an algebraic method, which consists of two stages. On first stage the numerical value of the optimum stability degree of designed control system is determined. On second stage the numerical value of tuning dynamic parameters of controllers are determined from algebraic expressions. The obtained results are compared with the results which are obtained using the other known methods.