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:
Feb. 28, 2006
Filed:
Sep. 15, 2005
Yasuhiro Nakai, Kariya, JP;
Shigeru Kamio, Nagoya, JP;
Sumiko Amamiya, Okazaki, JP;
Kazuo Kawaguchi, Kasugai, JP;
Yuji Inoue, Nisshin, JP;
Yasuhiro Nakai, Kariya, JP;
Shigeru Kamio, Nagoya, JP;
Sumiko Amamiya, Okazaki, JP;
Kazuo Kawaguchi, Kasugai, JP;
Yuji Inoue, Nisshin, JP;
Toyota Jidosha Kasushiki Kaisha, Tokyo, JP;
Abstract
In a motor-driven shift position switching device, when the difference between a target position and the rotation position of a rotor has become smaller than a prescribed value in a motor feedback control, a transition is made to a deceleration control. A phase lead correction amount for correcting the phase lead of the current supply phase with respect to the rotor rotation phase is set in accordance with the rotor rotation speed. Thus, proper braking force suitable for the rotor rotation speed is exerted on the rotor and the rotor can be decelerated smoothly as it approaches the target position. Further, in the period when the current supply to the motor is kept off, the shift position switching determination ranges are set wider than in the period when the current supply to the motor is on.