This paper is concerned with behavior analysis and improvement of wind turbines with Doubly Fed Induction Generator (DFIG) when using a new fractional-order control strategy during wind variations. A doubly fed induction generator, two types of variable frequency power electronic converters and two input wind waveforms are considered. A fractional-order control strategy is proposed for the wind...

This contribution is focused on graphical investigation of robust stability for a feedback control loop containing the parametrically uncertain second order time-delay model of a main irrigation canal pool and a fractional order PI controller. The robust stability of the family of fractional order closed-loop characteristic quasipolynomials is analyzed by means of the sampled value sets and app...

We propose a fractional-order controller to stabilize unstable fractional-order open-loop systems with interval uncertainty whereas one does not need to change the poles of the closed-loop system in the proposed method. For this, we will use the robust stability theory of Fractional-Order Linear Time Invariant FO-LTI systems. To determine the control parameters, one needs only a little knowledg...

In this study, a Fractional-Order Sliding Mode Control scheme is proposed for trajectory tracking control of Delta parallel robot. The controller compared with both integer-order Proportional-Derivative and Controller Computed Torque method. forward kinematics, inverse kinematics dynamic robot are described. A Solidworks/Matlab/SimScape/Multibody model generated used parameter estimation valida...

This paper deals with fractional-order controlled systems and fractional-order controllers in the discrete domain. The mathematical description by the fractional difference equations and properties of these systems are presented. A practical example for modelling the fractional-order control loop is shown and obtained results are discussed in conclusion.

In this paper, robust H∞ control for fractional-order switched systems (FOSSs) with uncertainty is studied. Firstly, the switching law FOSSs proposed. Then, proven based on and linear matrix inequalities (LMIs). Moreover, a state feedback controller extended. Furthermore, LMI-based condition of proven. proposed to design controller. Finally, four simulation examples verified effectiveness metho...

In this paper a fractional order PI controller (FOPI) is proposed for the speed control of Permanent Magnet Synchronous Motor(PMSM). Fractional calculus is introduced into the PI controller, and proposes a robust fractional order PI controller (FOPI) for the speed control of a PMSM .PMSM drive system is a nonlinear system which is sensitive to load disturbance, parameter variation, unmodelled a...

Good way to the more efficient control of Higher Order Control System is to use fractional order PID controllers. In this paper, Fractional order PID Controller for Higher Order Control System is proposed and designed for 3 order control system. Podlubny proposed a generalization of the PID controller, namely the PI D controller, involving an integrator of order and a differentiator of order μ....