Motor vehicles – Compensating devices
Patent
1989-07-10
1992-03-24
Hill, Mitchell J.
Motor vehicles
Compensating devices
36442405, B62D 504
Patent
active
050979183
ABSTRACT:
The electric power steering apparatus of the invention is provided with a rotary detector for detecting a rotational position of a motor, a torque sensor for detecting a steering torque, and when the steering torque is within a dead zone, by increasing flow current to a motor for assisting steering force correspondingly to increase of a steering angle decided on the basis of the rotational position of the motor, the steering assisting force corresponding to the steering angle can be gained at the time of returning the steering wheel steered by mostly using by the steering torque being in the dead zone, and the proper steering assisting force can also be gained by making flow quantity corresponding to the steering angle to be minimum within a predetermined speed range and by increasing it at lower or higher speed than the predetermined speed range when the steering wheel is returned during a time of running at a low speed (such as a time of slowing down).
REFERENCES:
patent: 4664211 (1987-05-01), Oshita et al.
patent: 4681183 (1987-07-01), Oshita
patent: 4727950 (1988-03-01), Shimizu et al.
patent: 4730686 (1988-03-01), Shimizu
patent: 4800975 (1989-01-01), Oshita et al.
patent: 4819170 (1989-04-01), Shimizu
patent: 4837692 (1989-06-01), Shimizu
patent: 4947949 (1990-08-01), Morishita et al.
Daido Toshihiko
Matsuoka Hirofumi
Tabuse Hidetoshi
Hill Mitchell J.
Mitsubishi Denki & Kabushiki Kaisha
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