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2. 发明申请

US20070188906A1 Disk drive with adaptive actuator braking upon unexpected power loss 失效
标题翻译：带有自适应执行器的磁盘驱动器，在出现意外的电力损失时进
公开(公告)号：US20070188906A1
公开(公告)日：2007-08-16
申请号：US11352501
申请日：2006-02-10
申请人： Peter Ho , Lee Nguyentran , Bond-Yen Ting , Phong Vu
发明人： Peter Ho , Lee Nguyentran , Bond-Yen Ting , Phong Vu
IPC分类号： G11B21/02 , G11B5/596
CPC分类号： G11B21/12
摘要： A magnetic recording hard disk drive (HDD) uses adaptive braking of the voice coil motor (VCM) actuator upon unexpected loss of power during a track seek. An adaptive braking controller applies a preselected value of brake voltage to the VCM to reverse the motion of the freely-moving actuator. The value of the selected brake voltage is determined from the actuator velocity. A set. Of brake voltage values is stored in memory in the HDD, and each brake voltage value corresponds to a band of track seek lengths, with each band representing a range of actuator velocities. For each seek, the value of brake voltage corresponding to the band in which the seek length falls is stored in a register. If emergency power-off (EPO) occurs during the seek, the value of brake voltage is recalled from the register and applied to the VCM to brake the VCM. After the VCM has been adaptively braked in this manner, actuator retract occurs to unload the heads.
摘要翻译：磁记录硬盘驱动器（HDD）使用音圈电机（VCM）致动器的自适应制动器，在轨道寻找期间意外的功率损失。自适应制动控制器向VCM施加制动电压的预选值以反转自由移动的致动器的运动。所选制动电压的值由执行器速度确定。一套。制动电压值存储在HDD中的存储器中，并且每个制动电压值对应于磁道搜索长度的频带，每个频带表示致动器速度的范围。对于每个寻道，对应于寻找长度下降的频带的制动电压的值被存储在寄存器中。如果在寻道期间发生紧急断电（EPO），则从寄存器调用制动电压值，并将其施加到VCM以制动VCM。在VCM已经以这种方式自适应地制动之后，执行器退回发生以卸载头部。

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