CONTROL SYSTEM FOR AN ALL-WHEEL DRIVE ELECTRIC VEHICLE
First Claim
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1. An electric vehicle drive system comprising:
- first and second electric motors;
first and second torque limiting units for the first and second electric motors, respectively, the first and second torque limiting units configured to generate respective first and second maximum torques; and
a torque split unit configured to receive first input that includes at least a total torque request for the first and second electric motors, and the first and second maximum torques, the torque split unit configured to process the first input without taking into account wheel slip, and to generate at least respective first and second torque requests for the first and second electric motors.
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Abstract
Electric vehicles and, more particularly, a control system for an all-wheel drive electric vehicle.
20 Citations
23 Claims
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1. An electric vehicle drive system comprising:
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first and second electric motors; first and second torque limiting units for the first and second electric motors, respectively, the first and second torque limiting units configured to generate respective first and second maximum torques; and a torque split unit configured to receive first input that includes at least a total torque request for the first and second electric motors, and the first and second maximum torques, the torque split unit configured to process the first input without taking into account wheel slip, and to generate at least respective first and second torque requests for the first and second electric motors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method comprising:
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receiving first input that includes at least a total torque request for first and second electric motors of a vehicle, and respective first and second maximum torques for the first and second electric motors; generating, based on the first input and without taking into account wheel slip, at least respective first and second torque requests for the first and second electric motors; receiving second input that includes at least respective first and second slip errors relating to the first and second electric motors; generating, based on the second input, respective first and second torque commands for the first and second electric motors; and applying the respective first and second torque commands for the first and second electric motors. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification