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:
Jan. 22, 2019
Filed:
Dec. 12, 2013
Minebea Co., Ltd., Nagano, JP;
Takahiko Komatsu, Shizuoka, JP;
MINEBEA CO., LTD., Nagano, JP;
Abstract
A rotation angle detection device includes resolversandfor detecting the rotation angle of a rotating body, and a signal processing circuitfor processing the output signals of the resolvers. The signal processing circuitincludes a detection signal processing sectionfor obtaining, from the output signals of the resolvers, electrical angle signals Aand Acorresponding to the electrical angles of the resolvers, and an abnormality detection sectioncapable of detecting an abnormality of the input signal from at least one of the resolvers. The abnormality detection sectionperforms comparison determination processing for comparing the electrical angle signal Aand the electrical angle signal Aobtained from the resolvers at the same time, and comparison determination processing for comparing the electrical angle signals Aand the electrical angle signals Ain a continuous time series at time points.