SYSTEM AND METHOD FOR PREDICTING MECHANICAL FAILURE OF A MOTOR
First Claim
1. A method for a vehicle having plural electric motors, the method comprising:
- generating 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;
identifying one or more fault measures of each of the motor electrical signatures, the fault measures indicative of mechanical characteristics of the motors;
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.
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Accused Products
Abstract
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.
17 Citations
35 Claims
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1. A method for a vehicle having plural electric motors, the method comprising:
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generating 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; identifying one or more fault measures of each of the motor electrical signatures, the fault measures indicative of mechanical characteristics of the motors; 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A failure prediction system comprising:
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an input/output (I/O) module configured to determine one or more characteristics of electrical energy that is supplied to plural electric motors in a vehicle; a signature generation module configured to create motor electrical signatures for the motors, the motor electrical signatures representative of the characteristics of the electrical energy supplied to the motors; and an analysis module configured to determine one or more fault measures of the motor electrical signatures of one or more of the motors, the fault measures indicative of mechanical characteristics of one or more of the motors, wherein the analysis module is configured to compare the fault measures of each motor with the fault measures of the other motors in the same vehicle and predict an impending mechanical failure of one or more of the motors based on comparing the fault measures of the motors. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A computer readable storage medium for a system having a processor, the computer readable storage medium including one or more sets of instructions that direct the processor to:
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generate motor electrical signatures for plural electric motors of a common vehicle, the motor electrical signatures representative of one or more characteristics of electrical energy that is supplied to the motors; identify one or more fault measures of each of the motor electrical signatures, the fault measures indicative of mechanical characteristics of the motors; 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; and predict an impending mechanical failure of one or more of the motors based on comparing the fault measures of the motors. - View Dependent Claims (22, 23, 24, 25, 26)
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27. A method for a vehicle having plural electric motors, the method comprising:
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obtaining respective electrical signatures of the plural electric motors, wherein the electrical signatures relate to respective electrical energy supplied to the motors; performing a comparison of the electrical signature of one of the motors to the electrical signatures of the other motors in the same vehicle; determining an impending mechanical failure of said one of the motors based on the comparison; and communicating a signal in response to determining the impending mechanical failure. - View Dependent Claims (28, 29, 30)
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31. A diagnostics method, comprising:
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receiving a first signal relating to an automatic on-board determination of an impending mechanical failure of one of a plurality of motors of a vehicle; and at least one of the following steps, in response to receiving the first signal; scheduling a maintenance operation for the vehicle; generating second signals for controlling the vehicle to at least one of stop the vehicle or cause the vehicle to travel to a designated maintenance facility; generating an alert signal relating to the impending mechanical failure;
orgenerating information relating to performing the maintenance operation. - View Dependent Claims (32, 33, 34, 35)
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Specification