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:
Sep. 16, 2014
Filed:
Dec. 08, 2011
Keisuke Nishimura, Anjo, JP;
Takeshi Aoki, Anjo, JP;
Keisuke Nishimura, Anjo, JP;
Takeshi Aoki, Anjo, JP;
Aisin AW Co., Ltd., Anjo, JP;
Abstract
A control device that controls an electric motor drive device including a DC/AC conversion section that converts a DC voltage into an AC voltage using a detected angle detected by a resolver provided in an AC electric motor to supply the resulting AC voltage to the AC electric motor. The control device includes a correction information acquisition section that acquires first correction information on the basis of the rotational speed, and that acquires the second correction information on the basis of the modulation rate at the angle acquisition time point in the case where the rotational speed at the angle acquisition time point is less than the rotational speed threshold. A detected angle correction section corrects the detected angle on the basis of the correction information acquired by the correction information acquisition section.