Regenerative braking in the presence of an antilock braking system control event
AssigneeFord Global Technologies, LLC
InventorsHai Yu, Kerem Bayar, Dale Scott Crombez
Life of this patent
Estimating the term…
Abstract
A hybrid electric vehicle includes at least one wheel, a friction brake, a motor, and at least one controller. The friction brake is coupled to the wheel and configured to provide friction brake torque, and the motor is coupled to the wheel and configured to provide regenerative brake torque. The controller is configured to command the motor to provide a regenerative brake torque to satisfy a low frequency torque component or a high frequency torque component of a required antilock wheel brake torque during an antilock braking event.
Claims19
A vehicle comprising:
- a wheel;
- a friction brake coupled to the wheel and configured to provide friction brake torque;
- a motor coupled to the wheel and configured to provide regenerative brake torque;
- and
- at least one controller configured to filter a requested antilock wheel brake torque into different frequency components and command the motor to provide a regenerative brake torque to satisfy one of the frequency components during an antilock braking event.
A method of controlling a hybrid electric vehicle comprising:
- filtering a required antilock wheel brake torque into first and second components, the first component having a higher frequency than the second component;
- commanding one of a friction brake and a motor, each coupled to a wheel, to provide a torque to satisfy the first component;
- and
- commanding the other of the friction brake and the motor to provide a torque to satisfy the second component.
A vehicle comprising:
- a wheel;
- a friction brake configured to provide friction brake torque to the wheel;
- a motor configured to provide regenerative brake torque to the wheel;
- and
- at least one controller configured to filter a required antilock wheel brake torque with a low pass filter and command the motor to provide a regenerative braking torque according to the difference between the required antilock wheel brake torque and the filtered antilock brake torque.
Dependencies are inferred from the claim text.