公开(公告)号：US10068598B2

公开(公告)日：2018-09-04

申请号：US15915520

申请日：2018-03-08

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Reed D. Hanson ,  Kenneth A. Haapala ,  Dwight R. Kinney ,  Xinghui Huang

IPC: G11B5/55 ,  G11B5/48 ,  G11B5/596

CPC classification number: G11B5/556 ,  G11B5/4873 ,  G11B5/59622

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.

公开(公告)号：US09728213B1

公开(公告)日：2017-08-08

申请号：US15170811

申请日：2016-06-01

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Reed D. Hanson ,  Kenneth A. Haapala ,  Dwight R. Kinney ,  Xinghui Huang

IPC: G11B5/55 ,  G11B5/48 ,  G11B5/596

CPC classification number: G11B5/556 ,  G11B5/4873 ,  G11B5/59622

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.

公开(公告)号：US09934802B2

公开(公告)日：2018-04-03

申请号：US15670942

申请日：2017-08-07

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Reed D. Hanson ,  Kenneth A. Haapala ,  Dwight R. Kinney ,  Xinghui Huang

IPC: G11B5/55 ,  G11B5/48 ,  G11B5/596

CPC classification number: G11B5/556 ,  G11B5/4873 ,  G11B5/59622

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.