A noveI driving circuit for multifunction electrical bicycle is developed. It provides the functions of stepless speed, current limitation and energy feedback. So the bicycle has good performances.

• 为无刷永磁电动轮式电动自行车所开发的驱动电路，具有无级调速，滞回限流，能量回馈功能。电路简洁，功能完备，使整车性能优良。