| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent stalling, and to use a motor output horse power up to a motor output limit by a running electric motor, in a drive system for an electrically-driven dump truck. <P>SOLUTION: A motor target horse power Mr1 is calculated in response to a control variable of an acceleration pedal 1, the maximum horse power usable in the electric motors 12R. 12L out of the maximum horse power of the motor 4 is calculated in response to a target rotation speed Nr of the motor 4, a horse power coefficient Kp is computed in response to a rotation speed deviation, the maximum horse power usable in the electric motors 12R. 12L is corrected based on the horse power coefficient Kp to find the second motor target horse power Mr3, and the motor target horse power Mr1 is limited to the second motor target horse power Mr3 or less to control the torques of the electric motors 12R, 12L. <P>COPYRIGHT: (C)2008,JPO&INPIT |
