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:
Oct. 06, 2015
Filed:
Sep. 30, 2014
Western Digital Technologies, Inc., Irvine, CA (US);
Wei Xi, Mission Viejo, CA (US);
Wenlin Zhang, Irvine, CA (US);
Western Digital Technologies, Inc., Irvine, CA (US);
Abstract
A data storage device is disclosed comprising a microactuator configured to actuate a head over a disk. A control signal applied to the microactuator is generated based on an input sequence u(k). A Preisach bit map bis updated based on the input sequence u(k), wherein the Preisach bit map bcorresponds to a Preisach plane modeling a hysteretic response of the microactuator. A current compensation value yis generated based on an update value generated based on: where hrepresents a slice of the Preisach plane and {circumflex over (b)}is an update bit map based on at least part of the Preisach bit map b. The current input uand the current compensation value yare combined to generate the control signal applied to the microactuator.