ALL-WHEEL DRIVE ELECTRIC VEHICLE MOTOR TORQUE SAFETY MONITOR
First Claim
Patent Images
1. A vehicle torque safety monitor, comprising:
- a vehicle power estimator configured to estimate a first mechanical power of a first electric motor and a second mechanical power of a second electric motor;
an energy storage system power estimator and limiter, configured to estimate electrical power provided by an energy storage system, at least a portion of the electrical power converting to the first mechanical power and the second mechanical power; and
a vehicle power monitor, configured to indicate an inconsistency in the first mechanical power, the second mechanical power, and the electrical power.
7 Assignments
0 Petitions
Accused Products
Abstract
A vehicle torque safety monitor is provided. The safety monitor includes a vehicle power estimator configured to estimate a first mechanical power of a first electric motor and a second mechanical power of a second electric motor. The safety monitor includes an energy storage system power estimator and limiter, configured to estimate electrical power provided by an energy storage system, at least a portion of the electrical power converting to the first mechanical power and the second mechanical power. The system includes a vehicle power monitor, configured to indicate an inconsistency in the first mechanical power, the second mechanical power, and the electrical power.
-
Citations
20 Claims
-
1. A vehicle torque safety monitor, comprising:
-
a vehicle power estimator configured to estimate a first mechanical power of a first electric motor and a second mechanical power of a second electric motor; an energy storage system power estimator and limiter, configured to estimate electrical power provided by an energy storage system, at least a portion of the electrical power converting to the first mechanical power and the second mechanical power; and a vehicle power monitor, configured to indicate an inconsistency in the first mechanical power, the second mechanical power, and the electrical power. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A vehicle control unit, comprising:
-
a split torque command generator configured to couple to a first electric motor and to a second electric motor, the first electric motor and the second electric motor providing motive power for an all-wheel drive vehicle, the split torque command generator configured to direct the first electric motor to produce a first torque and direct the second electric motor to produce a second torque; and a vehicle torque safety monitor coupled to the split torque command generator, the vehicle torque safety monitor configured to; estimate mechanical power produced by each of the first electric motor and the second electric motor; estimate electrical power provided for conversion to mechanical power by the first electric motor and the second electric motor; and cooperate with the split torque command generator to alter at least one of the first torque and the second torque, in response to a discrepancy in the mechanical power and the electrical power. - View Dependent Claims (9, 10, 11, 12)
-
-
13. A method for monitoring power in an all-wheel drive vehicle having a plurality of electric motors, the method comprising:
-
calculating a first mechanical power produced by a first electric motor of the all-wheel drive vehicle; calculating a second mechanical power produced by a second electric motor of the all-wheel drive vehicle; calculating electrical power provided for production of the first mechanical power and the second mechanical power; calculating commanded vehicle power, as commanded to the first electric motor and the second electric motor; and determining whether the first mechanical power, the second mechanical power, the electrical power, and the commanded vehicle power are consistent; and reporting an inconsistency, in response to determining the inconsistency among the first mechanical power, the second mechanical power, the electrical power, and the commanded vehicle power, wherein at least one step of the method is performed by a processor. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
-
Specification