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. 05, 2006
Filed:
Jul. 01, 2005
Hiroshi Suzuki, Okazaki, JP;
Hiroshi Suzuki, Okazaki, JP;
Favess Co., Ltd., Okazaki, JP;
Toyoda Koki Kabushiki Kaisha, Kariya, JP;
Koyo Seiko Co., Ltd., Osaka, JP;
Abstract
A microcomputer includes an actual DUTY value detection section that detects an actual DUTY value γx by measuring the ratio of time in which an output voltage of each phase becomes a power supply voltage in a cycle of a triangular wave. A dead time compensation computation section subtracts the actual DUTY value γx from a DUTY instruction value αx before correction, thereby computing a difference value Δx. Subsequently, the dead time compensation computation section adds the difference value Δx to dead time compensation amounts βxp, βxm, which have been used for correcting the DUTY instruction value αx, thereby determining new dead time compensation amounts βxp' and βxm′. The dead time compensation amounts βxp, βxm stored in a memory are renewed with the new dead time compensation amounts βxp′, βxm′.