System and method for predicting mechanical failure of a motor

摘要

A method for a vehicle having plural electric motors includes generating motor electrical signatures for the motors. The motor electrical signatures represent one or more characteristics of electrical energy that is supplied to the motors. The method also includes identifying one or more fault measures of each of the motor electrical signatures. The fault measures are indicative of mechanical characteristics of the motors. The method further includes comparing the one or more fault measures of each motor with the one or more fault measures of the other motors in the same vehicle and predicting an impending mechanical failure of one or more of the motors based on comparing the fault measures of the motors.

主权项

1. A method for a vehicle having plural electric motors, the method comprising:
using one or more processors to generate motor electrical signatures for the motors, the motor electrical signatures representative of one or more characteristics of electrical energy that is supplied to the motors; using the one or more processors to identify one or more disturbance peaks of the electrical signatures, wherein one or more fault measures of each of the motor electrical signatures, are based on the number of disturbance peaks and indicative of mechanical characteristics of the motors; using the one or more processors to compare the one or more fault measures of each motor with the one or more fault measures of the other motors in the same vehicle; using the one or more processors to predict an impending mechanical failure of one or more of the motors based on comparing the fault measures of the motors; and using the one or more processors, responsive to the impending mechanical failure that is predicted, to generate a signal relating to at least one of vehicle control to bring the vehicle to a stop or vehicle movement for the vehicle to travel to a designated maintenance facility.