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:
Aug. 19, 2025
Filed:
Apr. 24, 2023
Danfoss Editron Oy, Lappeenranta, FI;
Risto Tiainen, Lappeenranta, FI;
Matti Iskanius, Lappeenranta, FI;
DANFOSS EDITRON OY, Lappeenranta, FI;
Abstract
A positioning device () for producing a position signal indicative of a rotational position of a resolver is disclosed. The positioning device includes a signal interface () for receiving alternating signals (V_cos, V_sin) from the resolver and a processing system () for generating the position signal based on position-dependent amplitudes of the alternating signals and on polarity information indicative of a polarity of an excitation signal (V_exc) of the resolver. The processing system is configured to recognize a polarity indicator, such as a change of frequency or phase, on a waveform of one or both of the alternating signals and to determine the polarity information based on the recognized polarity indicator. Thus, the polarity information related to the excitation signal is included in the alternating signals and therefore there is no need for a separate signaling channel for transferring the polarity information to the positioning device.