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. 07, 2025
Filed:
Sep. 10, 2020
Tamagawa Seiki Co., Ltd., Nagano-ken, JP;
Hiroshi Kushihara, Nagano-ken, JP;
Hirofumi Maruyama, Nagano-ken, JP;
Ryohei Ushikusa, Nagano-ken, JP;
Shinichi Arai, Nagano-ken, JP;
TAMAGAWA SEIKI CO., LTD., Nagano-Ken, JP;
Abstract
An R/D conversion method includes a step of removing a frequency band including a frequency component that is twice an excitation frequency of excitation signals of a resolver () from a digital angle value (φ). The R/D conversion method further includes a step of outputting, by the resolver (), the resolver signals having a phase difference that corresponds to an angle of the resolver with respect to the excitation signals, respectively, and a step of feeding back the digital angle value (φ) includes feeding back the digital angle value (φ) to the resolver signals.