Electric power steering apparatus, and method for detecting...

Details Electric power steering apparatus, and method for detecting... Electric power steering apparatus, and method for detecting...

2007-11-20

2007-11-20

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Automatic and/or with time-delay means

Responsive to direction, inclination or angular position of...

C318S254100, C318S605000

Reexamination Certificate

active

11421555

ABSTRACT:
An electric power steering apparatus which comprises: an angle detector for outputting a sine wave signal and a cosine wave signal corresponding to a rotor position of a brushless DC motor; and a torque detector for detecting a steering torque applied to a steering member, and which drives the brushless DC motor to assist steering based upon the sine wave signal and the cosine wave signal which were outputted from the angle detector and the steering torque detected by the torque detector. A sine wave signal and a cosine wave signal are squared and added to each other, and whether or not abnormality has occurred in the angle detector is detected by whether the addition result falls within a predetermined range. It is possible to detect abnormality in the angle detector at an early stage.

REFERENCES:
patent: 6679350 (2004-01-01), Shimizu et al.
patent: 6810986 (2004-11-01), Takagi
patent: 7154404 (2006-12-01), Sato
patent: 7161317 (2007-01-01), Matsushita et al.
patent: 7187153 (2007-03-01), Imagawa et al.
patent: 10-197238 (1998-07-01), None
patent: 10-258757 (1998-09-01), None
patent: 10-278826 (1998-10-01), None
patent: 2002-081961 (2002-03-01), None

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3885014