| 发明名称 |
FLY-HEIGHT CONTROL AND TOUCHDOWN DETECTION |
| 摘要 |
An embedded contact sensor (ECS) element for fly-height control and touchdown detection. An embedded contact sensor (ECS) element with a resistance that changes with a temperature change, which senses a clearance change between a head slider and a disk of a disk drive. A resistance measurement section, within said head IC, that determines a value of direct current resistance (DCR) of said ECS element, wherein said value of DCR changes with a temperature change, wherein said temperature change is caused by an air bearing cooling and frictional induced heating at a head disk interface. A resistance slope to fly-height conversion section that dynamically determines a target fly-height value for said head slider over said disk based on changes in said value of DCR. |
| 申请公布号 |
US2014268386(A1) |
申请公布日期 |
2014.09.18 |
| 申请号 |
US201313830776 |
申请日期 |
2013.03.14 |
| 申请人 |
HGST NETHERLANDS B.V. |
发明人 |
Li Jianhua;Kuramoto Kenichi;Shiramatsu Toshiya;Aoki Yuichi;Furukawa Masaru;Sano Yuichiro |
| 分类号 |
G11B5/60 |
主分类号 |
G11B5/60 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An embedded contact sensor (ECS) element, comprising:
said ECS element with a resistance that changes with a temperature change, that senses a clearance change between a head slider and a disk of a disk drive; a resistance measurement section, within said head IC, that determines a value of direct current resistance (DCR) of said ECS element, wherein said value of DCR changes with a temperature change, wherein said temperature change is caused by an air bearing cooling and frictional induced heating at a head disk interface; and a resistance slope to fly-height conversion section that dynamically determines a target fly-height value for said head slider over said disk based on changes in said value of DCR. |
| 地址 |
Amsterdam NL |
