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:
Dec. 23, 2025
Filed:
May. 24, 2022
Parker-hannifin Corporation, Cleveland, OH (US);
Gerard Oustry, Acreau, FR;
David T. Blood, West Sussex, GB;
Patrick C. Toops, Charleston, WV (US);
William Beach, Cumming, GA (US);
Sai Kiran Gunti, Parma, OH (US);
Parker-Hannifin Corporation, Cleveland, OH (US);
Abstract
A method includes receiving a sine feedback signal and a cosine feedback signal from a resolver coupled to an output shaft of an electric motor. Rectified sine and cosine signals are generated by sampling the feedback signals. A direction of rotation of the output shaft is determined using the feedback signals and the rectified signals. The rectified sine signal and the rectified cosine signal are converted into a signed sine signal and a signed cosine signal, respectively, using information associated with the direction of rotation. A speed of rotation of the output shaft is determined using the signed sine signal and the signed cosine signal. The direction and the speed of rotation are compared to a respective direction and a respective speed determined by a resolver-to-digital converter. The electric motor is operated based on the comparison.