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:
Nov. 02, 2021
Filed:
May. 06, 2020
Applicant:
Melexis Technologies NV, Tessenderlo, BE;
Inventor:
Marc Lambrechts, Leuven, BE;
Assignee:
MELEXIS TECHNOLOGIES NV, Tessenderlo, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 21/09 (2016.01);
U.S. Cl.
CPC ...
H02P 21/09 (2016.02);
Abstract
A lead angle estimator is provided for estimating a lead angle of a brushless DC motor. The lead angle is the angle between a phase-voltage-vector of a phase-voltage, and a phase-current-vector of a phase-current. The lead angle estimator comprises a sampling unit and a processing unit. The sampling unit is adapted for obtaining phase-samples, which are a measure of the phase-current. The processing unit is adapted for estimating the lead angle by calculating a difference of the phase-samples in a extremum period around a maximum or around at least the phase-voltage, and by normalizing the obtained difference.