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:
Jan. 03, 2017
Filed:
Feb. 09, 2016
Applicant:
Seagate Technology Llc, Cupertino, CA (US);
Inventors:
Sangbo Seo, Yongin-si, KR;
Yunsik Ju, Suwon-si, KR;
Minsu Jang, Suwon-si, KR;
Jiwon Cha, Yongin-si, KR;
Assignee:
SEAGATE TECHNOLOGY LLC, Cupertino, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 5/55 (2006.01);
U.S. Cl.
CPC ...
G11B 5/556 (2013.01);
Abstract
First and second controllers output respective first and second control signals for first and second plants that respectively correspond to the stages of an actuator. An inverse model of the first plant used to determine a decoupled output of the second plant from a combined output of the first and second plants. A disturbance estimate is subtracted from the second control signal to obtain a disturbance-corrected output. A loop-shaping filter is used between the disturbance corrected output and the second plant.