Research on the Auxiliary Functions Control System of Brushless DC Motor for Electric Bicycle

The auxiliary functions control system of brushless DC motor for electric bicycle is introduced.An auxiliary functions control system is designed with electric braking,under-voltage protection,overaccelerate vibration avoidance,blocking protection,cruise,1∶1 assistance functions.In the system,the speed control handgrip,brake bolt and the rotor-position sensors are used.The experiment results show that this system can improve the comfort and safety of the E-bicycle.