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:
Apr. 14, 2015
Filed:
Jul. 18, 2014
Western Digital Technologies, Inc., Irvine, CA (US);
Minghui Zheng, Berkeley, CA (US);
Xu Chen, San Diego, CA (US);
Haiming Wang, Los Angeles, CA (US);
Young-Hoon Kim, Cupertino, CA (US);
Wei Xi, Mission Viejo, CA (US);
Kuang-Yang Tu, Irvine, CA (US);
Western Digital Technologies Inc., Irvine, CA (US);
Abstract
A data storage device is disclosed comprising a disk, a head, and a microactuator configured to actuate the head over the disk. An input signal to a compensator is generated, wherein the compensator is configured to generate a microactuator control signal. A slew rate signal representing a slew rate of the microactuator control signal is generated and applied to a first saturator configured to generate a saturated slew rate signal. The input signal is adjusted based on the slew rate saturation signal, and the microactuator is controlled based on the microactuator control signal.