Motor driven power steering apparatus

Details Motor driven power steering apparatus Motor driven power steering apparatus

1990-04-20

1992-03-17

Chin, Gary

Boots, shoes, and leggings

180 791, B62D 504

Patent

active

050974203

ABSTRACT:
A motor driven power steering apparatus comprising an electric motor for assisting steering, a torque sensor for detecting steering torque, a detecting means for detecting vehicle speed or rotation speed of an engine, a resistance for limiting electric current to be supplied to an electric motor, and a relay being connected in parallel to the resistance, opens the relay when the vehicle is running at a high speed, that is, the vehicle speed or rotation speed is larger than a predetermined value thereof, limits current to be supplied to the electric motor by the resistance, makes torque generated by the electric motor smaller in the case where anything unusual is created in the apparatus at a high speed running, and makes it easier for a driver to correct the steering operation or to avoid a danger.

REFERENCES:
patent: 4386674 (1983-06-01), Sugata
patent: 4538698 (1985-09-01), Hashimoto et al.
patent: 4621327 (1986-11-01), Dolph et al.
patent: 4753310 (1988-06-01), Hashimoto
patent: 4871952 (1989-10-01), Ishizaka et al.
patent: 4878004 (1989-10-01), Shimizu
patent: 4913249 (1990-04-01), Lang
patent: 4957182 (1990-09-01), Morishita et al.
patent: 4984647 (1991-01-01), Morishita et al.

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