US 12,264,718 B2
Brake device for vehicle and apparatus and method for calibrating braking force of brake device to zero point
Dong Geun Lee, Yongin-si (KR)
Assigned to HYUNDAI MOBIS CO., LTD., Seoul (KR)
Filed by HYUNDAI MOBIS CO., LTD., Seoul (KR)
Filed on Apr. 20, 2022, as Appl. No. 17/724,576.
Claims priority of application No. 10-2021-0163301 (KR), filed on Nov. 24, 2021; and application No. 10-2021-0166921 (KR), filed on Nov. 29, 2021.
Prior Publication US 2023/0160447 A1, May 25, 2023
Int. Cl. F16D 65/18 (2006.01); F16D 66/00 (2006.01); F16D 121/20 (2012.01)
CPC F16D 65/18 (2013.01) [F16D 2066/003 (2013.01); F16D 2066/005 (2013.01); F16D 2121/20 (2013.01)] 18 Claims
OG exemplary drawing
 
14. A method of performing a zero-point calibration on a braking force of a brake device for a vehicle, comprising:
measuring a motor current of a motor when the motor rotates a screw bar so that a brake pad presses a brake disc;
estimating a load applied to the screw bar for each measured motor current;
outputting an electrical signal when the brake pad presses the brake disc and the screw bar is moved by a repulsive force; and
performing the zero-point calibration on the load estimated when outputting the electrical signal.