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

A method for controlling a power steering system of a vehicle comprising at least one steering computer 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, said method being intended to limit the physical supply current of the at least one assist motor upon an impact between the at least one rack and the at least one mechanical stop, said control method comprising:

• a determination step in which the at least one steering computer computer determines a setpoint torque of the at least one assist motor;
• a drive step in which the at least one steering computer determines the setpoint supply current of the at least one assist motor;
• wherein the control method also comprises:
• 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;
• a protection step emitting a protected signal to the drive step when an impact is detected, so that the setpoint supply current determined by the drive step is less than a maximum setpoint supply current.