Sensorless Anti-Control and Synchronization of Chaos of Brushless DC Motor Driver

Abstract The present study examines the anti-control of chaos in a brushless DC motor. We use several numerical approaches to analyze periodic and chaotic processes, including bifurcation diagrams, and parametric regions of periodic oscillations. Anti-chaotic control can be implemented by using an external periodic term or an external constant. The investigation of the parametric singularities of brushless DC (BLDCM), permits to identify of a complex bifurcation structure namely the Limit Point (LP), the Hopf (H), and the Bogdanov-Takens (BT) bifurcations, period-doubling bifurcation and route to chaos. Parametric singularities are analyzed using a variety of anti-control signals, including constant voltage, periodic square, saw-tooth wave, triangular, and so on. The simulation results show that adding constant or periodic factors improves chaos and anti-control effects.