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. 09, 2024
Filed:
Oct. 21, 2020
Applicant:
Robert Bosch Gmbh, Stuttgart, DE;
Inventors:
Gunther Goetting, Stuttgart, DE;
Yuping Chen, Markgroeningen, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 21/00 (2016.01); H02P 21/18 (2016.01); H02P 21/10 (2016.01);
U.S. Cl.
CPC ...
H02P 21/18 (2016.02); H02P 21/10 (2013.01);
Abstract
A method () for calibrating an offset angle (PhiO) for field-oriented control of an electric machine () between an angle signal (W) of a position encoder () and the direction of the rotor flux (RF), having the steps of: periodically varying () a current vector (Is) along a line of constant torque; ascertaining () a speed signal (n_t) of the position encoder () of the electric machine (); calibrating () the offset angle (PhiO) on the basis of the ascertained speed signal (n_t).