Abstract
Fractional calculus can provide novel and higher performance for the classical integer order controllers thanks to the fractional order derivative or integral. However, the difficulties of designing fractional order controllers increase, in particular when using the pole placement principle. This paper deals with an induction motor control using non integer order I-P controllers. The main contribution of this paper is the development of a method to find the controller's parameters using the pole placement method and the choice of the reference fractional model of the closed loop. The model is selected such that its step response will be equivalent to that of a dumped second order model. The parameters of the reference model are determined using the genetic algorithm in order to optimize thus equivalence. The application of these controllers to the induction motor shows its interest, particularly its robustness with respect to the mechanical parameters variations. Copyright (C) 2007 Praise Worthy Prize S.r.l. - All rights reserved.