Electricity: motive power systems – Motor-reversing – Automatic and/or with time-delay means
Patent
1994-12-23
1996-10-29
Martin, David S.
Electricity: motive power systems
Motor-reversing
Automatic and/or with time-delay means
180446, B62D 504
Patent
active
055699910
ABSTRACT:
The invention provides an electric power steering apparatus, in which one of a pair of switching elements that has been PWM controlled is turned off and the other switching element is PWM controlled instead when a steering wheel is returning to its neutral position, thereby allowing the steering wheel to return smoothly and preventing a control hunting.
REFERENCES:
patent: 4719396 (1988-01-01), Shimizu
patent: 4802544 (1989-02-01), Maeda
patent: 4834201 (1989-05-01), Miyazaki et al.
patent: 5027276 (1991-06-01), Morishita et al.
patent: 5097420 (1992-03-01), Morishita
patent: 5303156 (1994-04-01), Matsuoka et al.
patent: 5404960 (1995-04-01), Wada et al.
patent: 5444622 (1995-08-01), Takeshima et al.
Matsuoka Hirofumi
Nishimoto Mitsuhiko
Koyo Seiko Co. Ltd.
Martin David S.
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