Provided is a motor fault detection device for an electric automobile that is able to detect faults in an electric motor in an electric automobile precisely, and with which costs can be reduced in comparison with the prior art. This detection device is equipped with: a steering angle detection sensor (15b) that detects the steering angle of the vehicle; a rotational angle sensor (36) that determines the rotational angle of electric motors (6); a vehicle speed sensor (9); a control map (10a), in which is set the relationship between the steering angle, the vehicle speed, and a value based on the difference between the normal rotational angles of the left/right electric motors (6, 6), which respectively drive a pair of wheels, that is, the left/right wheels (2, 2); and a fault determination means (11) that determines that there is a fault with the electric motors (6) when the difference in the rotational angles of the left/right electric motors (6, 6) as determined by the rotational angle sensor (36) deviates from a value that is based on the difference in the rotational angles obtained by referencing the control map (10a) with respect to the steering angle and the vehicle speed obtained by the steering angle detection sensor (15b) and the vehicle speed sensor (9).
Motor fault detection device for electric automobile
2015-06-03
Patent
Elektronische Ressource
Englisch
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