| 摘要 |
PURPOSE:To enhance brake feeling by assembling a variable speed drive between a wheel and a motor and providing a controller for increasing the speed change ratio as the vehicle speed decreases during brake operation up to a maximum speed change ratio at the time of stoppage of the vehicle, and a torque controller for decreasing the regenerative torque of the motor as the vehicle speed decreases. CONSTITUTION:Speed change ratio of a variable speed drive 4 is controlled by a speed change ratio controller 10 and the drive torque or the regenerative torque of a motor 6 is controlled by a torque controller 12. The speed change ratio controller 10 comprises a computor and an actuator being controlled by the computor to increase/decrease the speed change ratio. The torque controller 12 comprises a switching element, e.g. a thyristor, assembled between a battery 8 and the motor 6, a firing angle controller therefor, a computor, etc. The speed change controller 10 and the torque controller 12 receive signals from sensors 14-22. This constitution improves brake feeling and energy efficiency. |
