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US 10,723,229 B1Granted
Regenerative braking control system
AssigneeFord Global Technologies, LLC
InventorsYixin Yao, Yanan Zhao
Life of this patent
Estimating the term…
Abstract
A vehicle includes an electric machine, friction brakes, and a controller. The electric machine is configured to recharge a battery during regenerative braking. The friction brakes are configured to apply torque to wheels of the vehicle to decelerate the vehicle. The controller is programmed to, responsive to an anti-lock braking event, adjust a regenerative braking torque of the electric machine based on a difference between a desired wheel slip ratio and an actual wheel slip ratio.
Claims17
A vehicle comprising:
- an electric machine configured to recharge a battery during regenerative braking;
- friction brakes configured to apply torque to wheels of the vehicle to decelerate the vehicle;
- and
- a controller programmed to,
- responsive to an anti-lock braking event, adjust a regenerative braking torque of the electric machine based on a difference between a desired wheel slip ratio and an actual wheel slip ratio, and
- responsive to the anti-lock braking event, adjust a braking torque of the friction brakes based on the difference between the desired wheel slip ratio and the actual wheel slip ratio, wherein a total braking torque is a sum of the regenerative braking torque of the electric machine and the braking torque of the friction brakes.
3 more elements
A vehicle comprising:
- an axle having first and second wheels;
- first and second electric machines secured to the axle adjacent to the first and second wheels, respectively, and configured to transfer energy from the first and second wheels, respectively, to a battery during regenerative braking;
- first and second friction brakes configured to apply torque to the first and second wheels, respectively, to decelerate the vehicle;
- and
- a controller programmed to, responsive to an anti-lock braking event, adjust a regenerative braking torque of the first electric machine based on a difference between a desired wheel slip ratio and an actual wheel slip ratio of the first wheel.
2 more elements
A vehicle braking control method comprising:
- responsive to an anti-lock braking event,
- adjusting a regenerative braking torque of an electric machine that is disposed on a wheel axle based on a difference between a desired wheel slip ratio and an actual wheel slip ratio, wherein the regenerative braking torque of the electric machine is adjusted based on a sliding mode control algorithm, and
- adjusting a braking torque of a friction brake that is disposed on the wheel axle based on the difference.
Dependencies are inferred from the claim text.