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:
Mar. 24, 2020
Filed:
Sep. 28, 2018
Applicant:
Apple Inc., Cupertino, CA (US);
Inventors:
Hari Vasudevan, Los Gatos, CA (US);
Eileen A. Mazzochette, Saratoga, CA (US);
Arman Hajati, Santa Clara, CA (US);
Shingo Yoneoka, Sunnyvale, CA (US);
Assignee:
Apple Inc., Cupertino, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 33/00 (2006.01); H02P 25/034 (2016.01); H02P 23/12 (2006.01); H02P 23/14 (2006.01); G06F 3/01 (2006.01); H02K 29/12 (2006.01); H02K 33/18 (2006.01); H02K 29/08 (2006.01); H02P 29/60 (2016.01);
U.S. Cl.
CPC ...
H02P 25/034 (2016.02); G06F 3/016 (2013.01); H02K 29/08 (2013.01); H02K 29/12 (2013.01); H02K 33/18 (2013.01); H02P 23/12 (2013.01); H02P 23/14 (2013.01); H02P 29/60 (2016.02);
Abstract
A system for providing closed-loop control of a linear resonant actuator using Back Electromotive Force (EMF) and inertial compensation is disclosed. In an embodiment, one or more inertial sensors are used to estimate low frequency motion of a haptic engine moving mass and compensate for the motion using a feedforward model, thus providing a more robust closed-loop control system for controlling the moving mass when subjected to low frequency disturbances by a user, for example, shaking or swinging the device.