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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.:

US 11101754 B1

PDFFull Text
Date of Patent:
Aug. 24, 2021

Filed:

May. 08, 2020

Stall detection in stepper motors using differential back-emf between rising and falling commutation phase of motor current

Applicant:

Texas Instruments Incorporated, Dallas, TX (US);

Inventors:

Sooping Saw, McKinney, TX (US);

Rakesh Raja, Allen, TX (US);

Wen Pin Lin, Allen, TX (US);

Sudhir Nagaraj, Dallas, TX (US);

Assignee:

TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US);

Attorneys:

Charles F. Koch

Charles A. Brill

Frank D. Cimino

Primary Examiner:

David Luo

Int. Cl.
CPC ...
H02P 8/38 (2006.01); H02P 8/34 (2006.01); H02P 8/12 (2006.01);
U.S. Cl.
CPC ...
H02P 8/38 (2013.01); H02P 8/12 (2013.01); H02P 8/34 (2013.01);
Abstract

In one embodiment, a method includes detecting, by a stall detection sensor in a driver coupled to a stepper motor, a first set of time-off periods in a rising commutation phase of motor current during current regulation. The stall detection sensor further detects a second set of time-off periods in a falling commutation phase of motor current during current regulation. Next, the stall detection sensor compares the first set of time-off periods with the second set of time-off periods and determines whether the stepper motor is stalled based on the comparison of the first set of time-off periods with the second set of time-off periods.

Find Patent Forward Citations

Saw, Sooping. (2021). Stall detection in stepper motors using differential back-emf between rising and falling commutation phase of motor current (U.S. Patent No. 11101754). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11101754

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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