Based on the analysis of driving and regenerating circuit for the brushless DC motor
the regenerating controlling system is designed to lower the energy dissipation due to frequent starting and braking. Focusing on the speed-current double closed loops system
H
∞
controller is developed. The experimental results show that H
∞
outperforms the traditional PID controller for resisting perturbation
accelerating
response
and the controller enables to extend the mileage by 1.8% to 2.6%.