Device for controlling a motor-driven power steering system for

Details Device for controlling a motor-driven power steering system for Device for controlling a motor-driven power steering system for

1987-03-04

1988-02-16

Pekar, John A.

Motor vehicles

Compensating devices

180142, B62D 504

Patent

active

047249153

ABSTRACT:
A device for controlling a motor-driven power steering system for a vehicle comprising: a torque sensor for detecting operator-induced steering force exerted on a steering wheel by an operator and generating a voltage signal representative thereof; a motor operatively connected to power assist the steering motion caused by the operator through the steering wheel; a control unit electrically connected with the torque sensor through a connector interposed therebetween for controlling the power-assisting operation of the motor in response to the operator-induced steering torque detected by the torque sensor; and a converter interposed between the torque sensor and the connector for converting the voltage signal generated by the torque sensor into a proportional current signal to be supplied to the control unit. With the above arrangement, the control unit is input with an electrical signal precisely representing the steering torque measured by the torque sensor without being affected by any voltage drop during transmission of the electrical signal from the torque sensor to the control unit, so that the control unit can control the power assisting operation of the motor in accordance with the measured steering torque in a most precise manner.

REFERENCES:
patent: 4538698 (1985-09-01), Hashimoto et al.

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