Power steering apparatus

Details Power steering apparatus Power steering apparatus

1991-04-16

1993-04-13

Bollinger, David H.

Motor vehicles

Compensating devices

36442405, B62D 504

Patent

active

052018180

ABSTRACT:
The power steering apparatus for assisting the return of a steering wheel by the rotating force of a motor for assisting steering force wherein noting the fact that the steering torque when the steering wheel is being returned is within the dead zone, whether the steering wheel is being returned is judged on the basis of the steering torque detected by a torque sensor and the terminal voltage of the motor, and the direction and magnitude of a driving current for the motor when the steering wheel is being returned are determined corresponding to the vehicle speed. Accordingly, the steering wheel is returned to the neutral position without using a steering angle sensor.

REFERENCES:
patent: 4800975 (1989-01-01), Oshita et al.
patent: 5027276 (1991-06-01), Morishita et al.
patent: 5050697 (1991-09-01), Umemura
patent: 5122958 (1992-06-01), Eto et al.

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