Jtekt Europe

Quentin Fraison

Pascal Moulaire

André Michelis

A power-steering system for a motor vehicle includes a steering wheel and an assistance motor controlled by a closed-loop regulation system, the regulation system determining a motor torque of the assistance motor as a function of a measured steering-wheel torque, using at least one 'setpoint monitoring' arm calculating a component of the motor torque, referred to as 'variant motor torque', by subtracting a set steering-wheel torque from the RFe corresponding to the sum of the measured steering-wheel torque and the motor torque, wherein the variant motor torque is multiplied by a gain determined by a three-dimensional map as a function of a vehicle speed and the measured steering-wheel torque.

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Irigny, France

Quentin Fraison