| 摘要 |
<P>PROBLEM TO BE SOLVED: To detect an abnormality of a motor based on torque generated in the motor which drives a rear wheel of a four-wheel drive vehicle. <P>SOLUTION: A four-wheel drive control unit 23 estimates the actual torque of a motor 14 based on command torque for commanding torque requested for the motor 14 for driving the rear wheels 11 and 12 of the four-wheel drive vehicle 1, and the magnetic flux, a q-axis current, and an angular speed of the motor 14, and the estimated actual torque is compared with the commanded torque, and in the case that both the torque do not agree with each other, the presence of an abnormality in the motor 14 is determined. <P>COPYRIGHT: (C)2008,JPO&INPIT |
