Finite time synchronization of fractional-order brushless DC motor systems by soft variable structure control

In this paper, finite-time synchronization of two fractional order brushless DC motor (BLDC) systems with control constraints is investigated. First, a fractional-order BLDC model is proposed, a soft variable structure control scheme is introduced for the finite time synchronization of two fractional order chaotic systems with control constraints. Considering the constraints of the controller, the control parameters of the controller are limited by the soft variable structure method. The finite-time stability of the error systems is rigorously proven. Then, the controller is proposed for the finite-time synchronization of fractional-order brushless BLDC model systems with disturbances. Finally, numerical simulation results are presented to demonstrate the effectiveness and feasibility of the proposed strategy.