Braking control system and method for vehicle
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorHee Jin Cho
Life of this patent
Estimating the term…
Abstract
A braking control system and method for a vehicle are configured to calculate a braking force of front and rear wheels using a wheel slip ratio of the front and rear wheels and a road surface friction coefficient and then accurately estimate and calculate a disk temperature of the front and rear wheels using a predetermined estimation formula from the calculated braking force, and control distribution of braking pressure to the front wheels and the rear wheels so as to uniformly wear brake pads based on the calculated temperatures of the disks.
Claims20
A braking control system for a vehicle, comprising:
- a wheel speed sensor configured to detect a wheel speed of front wheels and rear wheels;
- and
- a controller configured to sequentially perform calculating a wheel slip ratio based on a wheel speed signal detected by the wheel speed sensor, extracting a road surface friction coefficient matching the calculated wheel slip ratio from mapping table data, calculating braking force of the front wheels and the rear wheels using vehicle data information in addition to the extracted road surface friction coefficient, calculating temperatures of disks of the front wheels and the rear wheels using the calculated braking force of the front wheels and the rear wheels and a disk temperature estimation formula, and controlling a distribution of braking pressure to the front wheels and the rear wheels based on a calculated temperature difference between the disks of the front wheels and the rear wheels.
A braking control method for a vehicle, the method comprising:
- detecting, by a wheel speed sensor, a wheel speed of front wheels and rear wheels;
- calculating, by a controller, a wheel slip ratio based on a wheel speed signal detected by the wheel speed sensor;
- extracting, by the controller, a road surface friction coefficient matching the calculated wheel slip ratio from mapping table data;
- calculating, by the controller, braking force of the front wheels and the rear wheels using vehicle data information in addition to the extracted road surface friction coefficient;
- calculating, by the controller, temperatures of disks of the front wheels and the rear wheels using the calculated braking force of the front wheels and the rear wheels and a disk temperature estimation formula;
- and
- controlling, by the controller, a distribution of braking pressure to the front wheels and the rear wheels based on a calculated temperature difference between the disks of the front wheels and the rear wheels.
Dependencies are inferred from the claim text.