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:
Jul. 24, 2007
Filed:
Nov. 08, 2005
Kenichiro Hidaka, Chiga-gun, JP;
Mikihiro Hiramine, Kariya, JP;
Motoshi Kawai, Anjo, JP;
Toshio Tsutsui, Takahama, JP;
Masahiro Miyata, Kariya, JP;
Takahiro Kojo, Gotenba, JP;
Kenichiro Hidaka, Chiga-gun, JP;
Mikihiro Hiramine, Kariya, JP;
Motoshi Kawai, Anjo, JP;
Toshio Tsutsui, Takahama, JP;
Masahiro Miyata, Kariya, JP;
Takahiro Kojo, Gotenba, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A motor controller including an inverter including plural switching elements that are subjected to PWM control to generate sine waves of plural phases, a motor including a stator coil supplied with the sine waves thus generated so that rotational magnetic field is generated in the stator coil, and a rotor that is rotationally driven by the action of the rotational magnetic field generated by the stator coil, a storage unit for detecting the sine waves of the respective phases generated in the inverter and storing a correction amount for each phase that is calculated on the basis of the detection result so that the sine waves of the respective phases are coincident with one another and a correcting unit for correcting a PWM signal for carrying out the PWM control on the switching elements on the basis of the correction amount thus calculated.