| 发明名称 | Data storage devices and methods with frequency-shaped sliding mode control | ||
| 摘要 | A data storage device includes a disk, a head, a microactuator, a coarse actuator, and a servo controller. The microactuator is configured to position the head relative to the disk. The coarse actuator is configured to position the microactuator relative to the disk. The servo controller is configured to generate an adjusted position error signal based on a position error signal and an estimated microactuator position signal. The servo controller is also configured to filter the adjusted position error signal with a shaping filter to generate a filtered position error signal, and to provide sliding mode control of the coarse actuator based at least partially on the filtered position error signal. | ||
| 申请公布号 | US9542966(B1) | 申请公布日期 | 2017.01.10 |
| 申请号 | US201514828255 | 申请日期 | 2015.08.17 |
| 申请人 | Western Digital Technologies, Inc.;The Regents of the University of California | 发明人 | Zheng Minghui;Tomizuka Masayoshi;Chen Xu;Xi Wei;Guo Guoxiao |
| 分类号 | G11B21/02;G11B5/596;G11B20/10 | 主分类号 | G11B21/02 |
| 代理机构 | Foley & Lardner LLP | 代理人 | Foley & Lardner LLP |
| 主权项 | 1. A data storage device, comprising: a microactuator configured to position a head relative to a disk; a coarse actuator configured to position the microactuator relative to the disk; and a servo controller configured to generate an adjusted position error signal based on a position error signal and an estimated microactuator position signal, and configured to filter the adjusted position error signal with a shaping filter to generate a filtered position error signal, and configured to provide sliding mode control of the coarse actuator based at least partially on the filtered position error signal; wherein the shaping filter is configured to provide frequency dependent filtering of the adjusted position error signal to generate the filtered position error signal. | ||
| 地址 | Irvine CA US | ||