发明名称 |
Disk drive servo control techniques to preserve PES continuity |
摘要 |
A disk drive comprising a moveable head, a disk, and a servo controller that implements servo control techniques to preserve PES continuity during track following operations is disclosed. The disk includes a plurality of tracks in which a substantial majority of the tracks include a plurality of servo sectors having a plurality of servo bursts that are utilized in track following operations. The servo controller controls track following operations with the moveable head and implements operations to preserve PES continuity during track following. These operations include: dividing tracks of the disk into a plurality of zones wherein each zone includes zone boundaries; and utilizing a PES equation for each zone to generate a PES value based upon read servo bursts wherein each zone PES equation includes a normalizing factor to account for boundary conditions associated with zone boundaries to preserve PES value continuity between zones.
|
申请公布号 |
US7616399(B1) |
申请公布日期 |
2009.11.10 |
申请号 |
US20060635904 |
申请日期 |
2006.12.07 |
申请人 |
WESTERN DIGITAL TECHNOLOGIES, INC. |
发明人 |
CHEN MIN;WANG ZHI;PHAN DUC T. |
分类号 |
G11B5/596 |
主分类号 |
G11B5/596 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|