| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent an excessive driving force from acting on a drive shaft due to the inertia of a motor while suppressing a decrease in torque to the drive shaft caused when a speed change gear which gears the driving force from the motor and outputs it to the drive shaft is switched to a Hi gear from a Lo gear. <P>SOLUTION: When the speed change gear is switched to the Hi gear from the Lo gear, a torque command Tm2* is set so as to control the motor so that power outputted from the motor is kept constant, and when the output torque Tmr to the drive shaft exceeds torque Tset outputted to the drive shaft, adjusting the torque ΔTm2 corresponding to an exceeding portion is calculated, the torque command Tm2* of which the torque is reduced by the adjustment torque ΔTm2 is set to control the motor by which the decrease of torque to the drive shaft caused when a speed is changed is suppressed by making use of the inertia of the motor, and the excessive torque upon the drive shaft is prevented from acting by the inertia. As a result, the sense of the incongruity of a driver at changing speed is prevented. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
