| 摘要 |
PURPOSE:To easily shift the change gear of an electric automobile adopting a manual change gear system by generating the torque corresponding to the pressing down amount of an accelerator pedal while a clutch is engaged and making the rotating speed of a motor equal of the speed of a wheel-side clutch disc immediately before the disengagement of the clutch when the clutch is disengaged. CONSTITUTION:A controller 10 inputs the rotating speed of a motor 8 from the encoder 9 of the motor 8, signals indicating the engaging and disengaging states of a clutch 4 from the clutch 4, gear position signals G from a change gear 5, and accelerator pressing down amount signals A from an accelerator pedal 7. The controller 10 makes the motor 8 generate torques in accordance with the signals A while the clutch 4 is engaged. When the clutch 4 is disengaged, the controller 10 calculates the rotating speed of the wheel-side clutch disc 4a of the clutch 4 from the rotating speed of the motor 8 immediately before the disengagement of the clutch 4 and the change gear ratio between the new and old gear positions and controls the motor 8 so that the rotating speed of the motor 8 can become equal to the calculated rotating speed. Therefore, the gear shifting operation can be performed smoothly. |
