Device for controlling steering force in power steering apparatu

Details Device for controlling steering force in power steering apparatu Device for controlling steering force in power steering apparatu

1987-09-18

1989-08-15

Chin, Gary

Boots, shoes, and leggings

180 791, 180142, B62D 600

Patent

active

048581348

ABSTRACT:
There is disclosed a device for controlling steering force in a power steering apparatus having an electromagnetic control valve according to road and driving conditions. The device includes a car speed sensor, a steering angle sensor, first arithmetic means, second arithmetic means, correcting means, control current arithmetic means and controlling means. The first arithmetic means computes a driving condition index by using car speed information. The second arithmetic means computes a road condition index by using steering angle signals. The correcting means converts the driving condition index into a correction driving condition index which takes any one of several stepwise-varied values. The control current arithmetic means computes an output control current value applied to electromagnetic control valve by the controlling means. The device further includes means for detecting lateral acceleration utilized for controlling the steering force.

REFERENCES:
patent: 4506909 (1985-03-01), Nakashima et al.
patent: 4574905 (1986-03-01), Asano et al.
patent: 4593358 (1986-06-01), Takeshima et al.
patent: 4602695 (1986-07-01), Takeshima et al.
patent: 4626994 (1986-12-01), Yabe et al.
patent: 4651290 (1987-03-01), Masaki et al.
patent: 4674587 (1987-06-01), Suzuki et al.
patent: 4751649 (1988-06-01), Eto et al.
patent: 4763745 (1988-08-01), Eto et al.

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