US 12,227,234 B2
Method for controlling a power steering system making it possible to limit a physical supply current supplied to a power steering motor in the event of a mechanical impact between a rack and a mechanical end stop
Arnaud Bouchet, Oullins (FR); and Ghislain Poncet, Doizieux (FR)
Assigned to JTEKT EUROPE, Irigny (FR)
Appl. No. 17/797,571
Filed by JTEKT EUROPE, Irigny (FR)
PCT Filed Feb. 3, 2021, PCT No. PCT/FR2021/050191
§ 371(c)(1), (2) Date Aug. 4, 2022,
PCT Pub. No. WO2021/156566, PCT Pub. Date Aug. 12, 2021.
Claims priority of application No. 20/01095 (FR), filed on Feb. 4, 2020.
Prior Publication US 2023/0055032 A1, Feb. 23, 2023
Int. Cl. B62D 5/04 (2006.01); B62D 6/04 (2006.01)
CPC B62D 5/0469 (2013.01) [B62D 5/0463 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for controlling a power steering system of a vehicle comprising at least one steering computer, at least one steering wheel, at least one assist motor consuming a physical supply current and exerting a motor torque on at least one rack, a movement of the at least one rack being limited by at least one mechanical stop, the control method comprising:
a determination step in which the at least one steering computer determines a setpoint torque of the at least one assist motor;
a drive step in which the at least one steering computer determines a setpoint supply current of the at least one assist motor;
a detection step in which the at least one steering computer detects an impact between the at least one rack and the at least one mechanical stop; and
a protection step emitting a protected signal to the drive step when an impact between the rack and the mechanical stop is detected, so that the setpoint supply current determined by the drive step is less than a maximum setpoint supply current and the physical supply current of the at least one assist motor is limited upon the impact.