Design of Lag/Lead Controller for Fractional Order Systems Containing Time-Delay and Uncertainty

Year 2016, Volume: 5 , 96 - 110, 07.11.2016

Tufan Doğruer , Nusret Tan

Abstract

This paper presents a methodology to design a phase-lead and phase-lag controllers for a fractional order system with time-delay and parameter uncertainty. The method that was used in the study is a classic design method used by D. P. Atherton. The method has been shown to be successful by adding time-delay and parameter uncertainty to this classic design method. The controllers are obtained by the implementation of individual design steps for the phase-lead and phase-lag controller. The unit-step responses and Bode diagrams of the systems with controllers are plotted. Considering the results obtained, it is observed that the method gave successful results for a fractional order plant with time-delay and parameter uncertainty.

Keywords

Controller design, fractional control systems, phase lead and lag controller

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