发明授权
- 专利标题： Magnetic head-positioning servo system, magnetic head test system and magnetic disk test system
- 专利标题（中）： 磁头定位伺服系统，磁头测试系统和磁盘测试系统
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申请号： US12537616申请日： 2009-08-07
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公开(公告)号： US08154821B2公开(公告)日： 2012-04-10
- 发明人: Shigeo Nakamura , Kimihiko Sudo , Toshinori Sugiyama , Yasuhiro Matsuda , Yukio Yamamoto , Yoshihiro Sakurai
- 申请人： Shigeo Nakamura , Kimihiko Sudo , Toshinori Sugiyama , Yasuhiro Matsuda , Yukio Yamamoto , Yoshihiro Sakurai
- 申请人地址： JP Tokyo
- 专利权人： Hitachi High-Technologies Corporation
- 当前专利权人： Hitachi High-Technologies Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Antonelli, Terry, Stout & Kraus, LLP.
- 优先权： JP2008-249462 20080929
- 主分类号： G11B5/596
- IPC分类号： G11B5/596
摘要：
A magnetic head-positioning servo system is provided to accurately test a magnetic disk with a track written in advance, by providing two fine actuators. The second fine actuator, to which a magnetic head is attached, is mounted on the first fine actuator. The second fine actuator has a larger generating displacement than a generating displacement of the first fine actuator, and lets the magnetic disk to follow the eccentricity of the track. In this way, the positioning accuracy can be increased.
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