US 11,912,255 B2
Estimation of the temperature of an electric motor of a vehicle brake actuator and control of the motor
Lennart Witte, Strasbourg (FR); and Alex Patrão Carqueijó, Pantin (FR)
Assigned to HITACHI ASTEMO FRANCE S.A.S, Drancy (FR)
Appl. No. 17/438,765
Filed by HITACHI ASTEMO FRANCE, Drancy (FR)
PCT Filed Mar. 2, 2020, PCT No. PCT/FR2020/050411
§ 371(c)(1), (2) Date Sep. 13, 2021,
PCT Pub. No. WO2020/188175, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 1902761 (FR), filed on Mar. 18, 2019.
Prior Publication US 2022/0153243 A1, May 19, 2022
Int. Cl. B60T 13/74 (2006.01); B60T 8/171 (2006.01); H02P 29/60 (2016.01); B60T 8/172 (2006.01); F16D 66/00 (2006.01); F16D 121/24 (2012.01)
CPC B60T 8/171 (2013.01) [B60T 8/172 (2013.01); B60T 13/746 (2013.01); H02P 29/60 (2016.02); F16D 2066/001 (2013.01); F16D 2066/006 (2013.01); F16D 2121/24 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A control method for controlling a vehicle brake, the brake comprising an electromechanical actuator which includes an electric motor, the method comprising:
controlling the actuator from the temperature of the motor, wherein the temperature of the motor is estimated from the motor constant and the ohmic resistance of the motor,
wherein:
the control method further comprises a step of determining a first temperature corrective coefficient of the motor, on the basis of a first function which is representative of a ratio of an angular speed of the motor to the supply current of the motor as a function of the supply voltage of the motor, and/or
the control method for controlling the brake further comprises a step of determining a second temperature corrective coefficient of the motor, on the basis of a second function which is representative of a ratio of the ohmic resistance of the motor to the motor constant as a function of the temperature of the motor.