| 摘要 |
PROBLEM TO BE SOLVED: To provide a drive control device for an electric vehicle that can start smoothly even after a temporary stop on an uphill grade. SOLUTION: When a backward movement that does not match the direction of the designated target rotation speed value V is detected, the override value k, which is multiplied with the designated target rotation speed value V, is re-set to a value lower than the initially set value kmax , thereby setting the target value V' of the motor rotation speed at a lower value. This eliminates the increase in apparent motor speed variation caused by the backward movement, suppresses the drive force of the motors M1, M2 to a lower level in order to prevent impact caused by excessive drive force when starting up a hill as well as slippage of the drive wheels 3, 3. In particular, willywaw in a motorized wheelchair 1 and deterioration of stability in strait forward travel caused by imbalance of the motors M1, M2 to the left and right is prevented and a smooth start is achieved. |
