The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 03, 2008
Filed:
Aug. 23, 2006
Masashi Hori, Anjo, JP;
Shigeru Yoshiyama, Kariya, JP;
Masaaki Shinojima, Chiryu, JP;
Haruki Matsuzaki, Obu, JP;
Tomoyuki Kashiwagi, Chita-gun, JP;
Kiyoshi Kimura, Obu, JP;
Masashi Hori, Anjo, JP;
Shigeru Yoshiyama, Kariya, JP;
Masaaki Shinojima, Chiryu, JP;
Haruki Matsuzaki, Obu, JP;
Tomoyuki Kashiwagi, Chita-gun, JP;
Kiyoshi Kimura, Obu, JP;
Denso Corporation, Kariya, Aichi-pref, JP;
Nippon Soken, Inc., Nishi, Aichi-pref, JP;
Abstract
By utilizing a mechanical backlash generated between an electric actuator and a shift range switching mechanism, a specific region is obtained, in which a variation in the output shaft angle is relatively small with respect to a variation in rotor angle. In this specific range, an actual shift range position is calculated, whereby the rotor angle that the motor controller recognizes is corrected so as to relate the actual shift range position. A deviation between the rotor angle and the actual shift range is corrected, so that the shift range switching is precisely performed.