Method for operating an electric drive module
First Claim
1. A method for controlling transmission of power to a set of wheels of a vehicle, the method comprising:
- providing a drive module including an electric motor configured to provide an amount of drive torque for powering the set of vehicle wheels;
determining a yaw acceleration of the vehicle;
determining a reference yaw acceleration based on a first set of vehicle parameters;
calculating a yaw acceleration error based on the yaw acceleration and the reference yaw acceleration; and
reducing the amount of drive torque provided by the drive module to the vehicle wheels based on the yaw acceleration error by reducing an amount of torque output by the electric motor.
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Accused Products
Abstract
The present teachings provide a method for controlling transmission of power to a set of wheels of a vehicle. The method can include providing a drive module configured to provide an amount of drive torque for powering the set of vehicle wheels. The method can include determining a yaw rate of the vehicle and a first set of vehicle parameters. The method can include determining a reference yaw rate of the vehicle based on the first set of vehicle parameters. The method can include calculating a yaw rate error based on the yaw rate and the reference yaw rate. The method can include reducing the amount of drive torque provided by the drive module to the vehicle wheels based on the yaw rate error.
34 Citations
20 Claims
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1. A method for controlling transmission of power to a set of wheels of a vehicle, the method comprising:
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providing a drive module including an electric motor configured to provide an amount of drive torque for powering the set of vehicle wheels; determining a yaw acceleration of the vehicle; determining a reference yaw acceleration based on a first set of vehicle parameters; calculating a yaw acceleration error based on the yaw acceleration and the reference yaw acceleration; and reducing the amount of drive torque provided by the drive module to the vehicle wheels based on the yaw acceleration error by reducing an amount of torque output by the electric motor. - View Dependent Claims (2, 3, 4, 5)
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6. A method for controlling transmission of power to a set of wheels of a vehicle, the method comprising:
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providing a drive module configured to provide an amount of drive torque for powering the set of vehicle wheels, the drive module including an electric motor; determining a yaw rate of the vehicle and a first set of vehicle parameters; determining a reference yaw rate of the vehicle based on the first set of vehicle parameters; determining a yaw acceleration of the vehicle; determining a reference yaw acceleration based on a second set of vehicle parameters; calculating a yaw rate error based on the yaw rate and the reference yaw rate; calculating a yaw acceleration error based on the yaw acceleration and the reference yaw acceleration; and reducing the amount of drive torque provided by the drive module to the vehicle wheels based on the yaw rate error and the yaw acceleration error by reducing an amount of torque output by the electric motor. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. A method for controlling transmission of power to a set of wheels of a vehicle, the method comprising:
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providing a drive module including an electric motor configured to provide an amount of drive torque for powering the set of vehicle wheels; determining an amount of torque requested by an operator of the vehicle; determining a start of an acceleration event, the start of the acceleration event being when the amount of torque requested is greater than or equal to a first predetermined amount of torque; determining a first coefficient of friction between the set of vehicle wheels and an operating surface during the acceleration event; determining a first maximum torque amount based on the first coefficient of friction; limiting the drive torque that is provided by the drive module to be less than the first maximum torque amount until an end of the acceleration event; and determining the end of the acceleration event, the end of the acceleration event being when the amount of torque requested is less than a second predetermined amount of torque. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification