Invention Grant
- Patent Title: Hysteresis compensation in a disc drive
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Application No.: US15915520Application Date: 2018-03-08
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Publication No.: US10068598B2Publication Date: 2018-09-04
- Inventor: Reed D. Hanson , Kenneth A. Haapala , Dwight R. Kinney , Xinghui Huang
- Applicant: SEAGATE TECHNOLOGY LLC
- Applicant Address: US CA Cupertino
- Assignee: SEAGATE TECHNOLOGY LLC
- Current Assignee: SEAGATE TECHNOLOGY LLC
- Current Assignee Address: US CA Cupertino
- Agency: Holland & Hart LLP
- Main IPC: G11B5/55
- IPC: G11B5/55 ; G11B5/48 ; G11B5/596

Abstract:
Systems and methods for compensating for hysteresis in a disc drive are described. In one embodiment, a method may use an inverse hysteresis model to linearize effects of hysteresis of a microactuator in the disc drive. The hysteresis model may be a Coleman-Hodgdon hysteresis model. The hysteresis of the microactuator may be characterized, and the inverse hysteresis model may be based at least in part on the characterization. The inverse hysteresis model may be used to implement a digital filter. The digital filter may be employed in series with the microactuator to linearize the effects of hysteresis.
Public/Granted literature
- US20180197569A1 HYSTERESIS COMPENSATION IN A DISC DRIVE Public/Granted day:2018-07-12
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