Design of Robust PI and PID Controller for DC Motor – Fuzzy Parametric Approach

Mangipudi Sivakumar, T.Bala Bhargavi, Danaboyina srinivas Rao, M Ramalinga Raju

Abstract


A fuzzy parametric uncertain system is an uncertain Linear Time Invariant (LTI) system with fuzzy coefficients. Design of robust PI/PIDcontroller for fuzzy parametric uncertain is not an easy task. In this paper, an algorithm for the design of robust PI/PID controller is proposed. This algorithm is based on approximating the fuzzy coefficients by nearest interval system and then robust controller is designed using necessary and sufficient conditions for stability of the interval systems. To validate the proposed algorithm, in this paper a robust PI/PID controller algorithm is applied to case study of DC motor fuzzy parametric uncertain system.


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