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. 21, 2017
Filed:
May. 06, 2015
Applicant:
Johnson Electric S.a., Murten, CH;
Inventors:
Assignee:
Johnson Electric S.A., Murten, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05B 19/40 (2006.01); H02K 29/08 (2006.01); H02P 8/14 (2006.01); H02P 8/34 (2006.01); H02P 8/04 (2006.01); H02P 8/12 (2006.01); H02P 6/17 (2016.01);
U.S. Cl.
CPC ...
H02P 8/14 (2013.01); H02P 6/17 (2016.02); H02P 8/04 (2013.01); H02P 8/12 (2013.01); H02P 8/34 (2013.01);
Abstract
A controller is provided for driving a stepper motor with a magnetic rotor and at least one coil. The controller has a power stage for supplying the at least one coil with current, at least one analog Hall sensor for providing a signal as a function of the position of the magnetic rotor with respect to the Hall sensor, and a feedback line connecting the Hall sensor with the power stage to feed the signal of the Hall sensor back to the power stage.