Electricity: motive power systems – Positional servo systems – With compensating features
Reexamination Certificate
2006-03-07
2006-03-07
Fletcher, Marlon T. (Department: 2837)
Electricity: motive power systems
Positional servo systems
With compensating features
C318S432000, C318S433000, C701S041000, C701S042000
Reexamination Certificate
active
07009358
ABSTRACT:
The present invention provides an electric power steering device enabled to compensate for the influence of the inertia of a steering-assisting-force generating motor on steering with accurate timing even when a steering direction is reversed at high speed. Based on steering torque and a rotation angular speed of a steering-assisting-force generating motor, a steering angular acceleration correspondence value is obtained. The device has means for regulating a gain, which is multiplied to a change acceleration of the steering torque. The motor is controlled so that the steering assisting force is corrected according to a motor output correction value obtained on the basis of the relation between the motor output correction value and the steering angular acceleration correspondence value, which is preliminarily determined and stored in such a way as to compensate for the influence of the inertia on steering, and the obtained steering angular acceleration correspondence value.
REFERENCES:
patent: 4666013 (1987-05-01), Shibahata et al.
patent: 4972320 (1990-11-01), Sugiura et al.
patent: 5076381 (1991-12-01), Daido et al.
patent: 5469357 (1995-11-01), Nishimoto
patent: 5740040 (1998-04-01), Kifuku et al.
patent: 6360151 (2002-03-01), Suzuki et al.
patent: 6389342 (2002-05-01), Kanda
patent: 6490514 (2002-12-01), Kurishige et al.
patent: 6594568 (2003-07-01), Matsuoka
patent: 6597136 (2003-07-01), Burton et al.
patent: 6768283 (2004-07-01), Tanaka et al.
patent: 6854559 (2005-02-01), Kurishige et al.
patent: 2002/0125845 (2002-09-01), Burton et al.
patent: 2003/0052639 (2003-03-01), Tanaka et al.
patent: 0 718 174 (1996-06-01), None
patent: 2694213 (1997-09-01), None
European Search Report dated Feb. 24, 2004.
Aono Shinya
Kita Masayuki
Nishiyama Akihiro
Shimizu Yoshinobu
Takamatsu Takanobu
Fletcher Marlon T.
Koyo Seiko Co. Ltd.
McGinn IP Law Group PLLC
Miller Patrick
LandOfFree
Electric power steering device and method for controlling... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electric power steering device and method for controlling..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric power steering device and method for controlling... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3550296