Electric power steering system

Details Electric power steering system Electric power steering system

2005-05-09

2009-10-20

Morris, Lesley D (Department: 3611)

Motor vehicles

Steering gear

With electric power assist

C180S444000

Reexamination Certificate

active

07604088

ABSTRACT:
An electric power steering system is provided which is capable of providing a favorable steering feeling without using compensation logics such as of inertia compensation and friction compensation. The electric power steering system includes road-noise suppression control means (213) for controlling a steering assist motor (9) in a manner to damp torque transmission in a higher frequency region representing road noises than a frequency region representing road information. A friction value of a steering mechanism (A) is decreased enough to allow the intrinsic vibrations of the steering mechanism (A) to appear. Rotor inertia of the steering assist motor (9) is set to a value small enough to allow the frequencies of the intrinsic vibrations to be present in the frequency region where the torque transmission is damped by the road-noise suppression control means (213).

REFERENCES:
patent: 5699248 (1997-12-01), Nakagami et al.
patent: 6008599 (1999-12-01), Beck
patent: 6450287 (2002-09-01), Kurishige et al.
patent: 2002/0166716 (2002-11-01), Shimizu et al.
patent: 2005/0096813 (2005-05-01), Heilig et al.
patent: 62-38579 (1987-08-01), None
patent: 3-178868 (1991-08-01), None
patent: 6-227410 (1994-08-01), None
patent: 8-91236 (1996-04-01), None
patent: 8-119132 (1996-05-01), None
patent: 8-308198 (1996-11-01), None
patent: 2782254 (1998-05-01), None
patent: 10-278818 (1998-10-01), None
patent: 11-124045 (1999-05-01), None
patent: 2000-238655 (2000-09-01), None
patent: 2000-289638 (2000-10-01), None
patent: 2001-1917 (2001-01-01), None
patent: 2001-18822 (2001-01-01), None
patent: 2001-122146 (2001-05-01), None
patent: 2001-133343 (2001-05-01), None
patent: 2001-151121 (2001-06-01), None
patent: 2001-233234 (2001-08-01), None
patent: 2001-275325 (2001-10-01), None
patent: 2001-334948 (2001-12-01), None
patent: 2002-59860 (2002-02-01), None
patent: 2002-331946 (2002-11-01), None
patent: 2002-372469 (2002-12-01), None
patent: 2003-40120 (2003-02-01), None
patent: 2003-40128 (2003-02-01), None
patent: 2003-61272 (2003-02-01), None
patent: 2003-175835 (2003-06-01), None

Affiliated with

Also associated with

Rating

Electric power steering system 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 system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric power steering system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4140164