Control of chaotic uncertain brushless dc motors

In this paper, the problem of controlling chaotic uncertain brushless dc motor, exposed to external disturbances, is considered. Two different methods, feedback linearization and sliding mode control, are used to suppress chaos and regulate the system around one of its unstable equilibrium points. Although being able to do the job of regulating and also tracking very well, feedback linearization method is weak when there exist model uncertainties; nevertheless we can reach to a system which is robust to model uncertainties and external disturbances, by applying integral sliding mode approach. Simulation results confirm the effectiveness of these two methods.