| 摘要 |
PURPOSE:To obtain a drive control apparatus, for an electric car, which prevents the aggravation of a drive feeling which is generated by a cogging torque or the like when the electric car is running at a very low speed. CONSTITUTION:Immediately after a vehicle has started or when the vehicle is running at a very low speed (106), the speed of a motor, for running, which is constituted as a permenant-magnet synchronous motor is feedback-controlled (102, 110). When the load of the drive motor is stable to a certain extent, the aggravation of a drive feeling due to a torque change can be prevented when the speed is feedback-controlled because a cogging torque or the like appears as a speed change. When the vehicle is not running at the very low speed (106) or when a braking operation is required (104), a torque open-loop control operation is performed (116, 120) so as to satisfy an accelerating and braking feeling or the like. When a control operation is changed over (114, 122), a torque instruction value is changed gently. |
