| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor-driven vehicle comprising at least two motors for driving left and right wheels respectively, in which degradation of motor performance is quickly determined when the performance of one motor degrades by comparing the vehicle condition value when two motors are correct with an actual vehicle condition value. SOLUTION: It is judged whether a vehicle is substantially travelling straight or not (S40 and 50). The vehicle is determined whether it is in acceleration state or in regenerative braking state (S60 and 160). Any electric generator, for left wheel or right wheel, is determined to be abnormal or not by determing whether the deviation in wheel speed between left wheel and right wheel is large or not while the vehicle is substantially accelerated in straight travelling (S70-140). Any electric generator, of left wheel or right wheel, is determined to be abnormal or not by determing whether the deviation in wheel speed between left wheel and right wheel is large or not when the vehicle is substantially travelling straight and regenerative braking is performed (S170-240). COPYRIGHT: (C)2005,JPO&NCIPI |
