Motorized power steering apparatus

Details Motorized power steering apparatus Motorized power steering apparatus

Filed on

1989-09-15

Date issued

1991-02-05

Examiner

Hill, Mitchell J.

Patent Class

Motor vehicles

SubClass

Compensating devices

Other Related Categories

388831, B62D 504

Type

Patent

Status

active

Patent number

049896830

Description

ABSTRACT:
A motorized power steering apparatus for a vehicle has a torque sensor which generates an output voltage proportional to a steering torque exerted by the driver of the vehicle and a supply voltage. A motor controller controls the output torque of a drive motor which generates an auxiliary steering force corresponding to the output voltage of the torque sensor. The supply voltage for the torque sensor is decreased as the vehicle speed increases, so that the output torque of the motor for a given steering torque decreases as the vehicle speed increases.

REFERENCES:
patent: 2987135 (1961-06-01), Harvey
patent: 4437531 (1984-03-01), Urabe
patent: 4574903 (1986-03-01), Hashimoto et al.
patent: 4660671 (1987-04-01), Behr et al.
patent: 4666010 (1987-05-01), Morishita et al.
European Search Report EP 89 30 9167.

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