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1. 发明授权

US07558015B2 Actuation efficiency based contact detection 失效
标题翻译：基于动作效率的接触检测
公开(公告)号：US07558015B2
公开(公告)日：2009-07-07
申请号：US11693596
申请日：2007-03-29
申请人： Erhard Schreck , Rickmer Kose , Bruce Schardt , Davide Guarisco
发明人： Erhard Schreck , Rickmer Kose , Bruce Schardt , Davide Guarisco
IPC分类号： G11B21/02
CPC分类号： G11B19/04 , G11B5/6005 , G11B5/6064
摘要： In one example, a method is provided and includes comparing a measured change in spacing between a transducer element and a storage element in response to a fly height control signal with an expected change in spacing for the applied fly height control signal. The method also includes detecting an event condition based on the comparison between the measured change in spacing and the expected change in spacing.
摘要翻译：在一个示例中，提供了一种方法，并且包括响应于飞行高度控制信号，比较所测量的换能器元件和存储元件之间的间隔的变化，以及所应用的飞行高度控制信号的间隔的预期变化。该方法还包括基于所测量的间隔变化与间隔的期望变化之间的比较来检测事件条件。

2. 发明申请

US20070230018A1 ACTUATION EFFICIENCY BASED CONTACT DETECTION 失效
标题翻译：基于启动效率的接触检测
公开(公告)号：US20070230018A1
公开(公告)日：2007-10-04
申请号：US11693596
申请日：2007-03-29
申请人： Erhard Schreck , Rickmer Kose , Bruce Schardt , Davide Guarisco
发明人： Erhard Schreck , Rickmer Kose , Bruce Schardt , Davide Guarisco
IPC分类号： G11B21/02
CPC分类号： G11B19/04 , G11B5/6005 , G11B5/6064
摘要： Detection of contact between a sensor, such as a data head or a slider, and a surface, such as the magnetic surface of a disk is achieved using the efficiency of actuator associated with the sensor. In this manner, the fly height of the sensor can be calibrated substantially continuously.
摘要翻译：使用与传感器相关联的致动器的效率来实现传感器（例如数据头或滑块）与表面（例如盘的磁性表面）之间的接触的检测。以这种方式，可以基本连续地校准传感器的飞行高度。

3. 发明授权

US07602577B1 Rapid off track detection using in-drive microactuator 有权
标题翻译：使用驱动微型致动器的快速离轨检测
公开(公告)号：US07602577B1
公开(公告)日：2009-10-13
申请号：US11345122
申请日：2006-01-31
申请人： Rickmer Kose , Erhard Schreck , Frank Obregon
发明人： Rickmer Kose , Erhard Schreck , Frank Obregon
IPC分类号： G11B27/36 , G11B5/596
CPC分类号： G11B19/042 , G11B5/4826 , G11B5/4873 , G11B5/5552 , G11B19/045
摘要： A microactuator incorporated within an actuator assembly of a disk drive is used as a detection element for rapid off track events that may occur. Preferably, the microactuator employs one or more piezoelectric elements used for purposes of secondary actuation. Uncontrolled movement of the actuator across the disk results in the piezoelectric elements generating a voltage spike or signal that is analyzed to determine whether a rapid off track event has occurred. Rapid off track events are distinguished from other possible events, such as shock events. If a rapid off track event is detected, then remedial actions are taken to restore data integrity, to include executing restore commands such as rewriting selected data tracks. Dedicated piezoelectric elements may also be provided for detecting rapid off track events wherein these elements are not incorporated in the servo loop that controls positioning of the actuator.
摘要翻译：将并入磁盘驱动器的致动器组件内的微型致动器用作可能发生的快速偏离轨迹事件的检测元件。优选地，微致动器采用用于二次致动的一个或多个压电元件。致动器跨越盘的不受控制的运动导致压电元件产生电压尖峰或信号，该电压尖峰或信号被分析以确定是否发生了快速关闭轨道事件。快速离线事件与其他可能的事件（例如休克事件）区分开来。如果检测到快速关闭轨道事件，则采取补救措施来恢复数据完整性，以包括执行恢复命令，例如重写所选数据轨道。还可以提供专用压电元件用于检测快速偏离轨道事件，其中这些元件未被并入控制致动器定位的伺服回路中。

4. 发明授权

US07639449B1 Passive fly height adjustment to compensate for ambient pressure changes in a disk drive 有权
标题翻译：被动飞行高度调节以补偿磁盘驱动器中的环境压力变化
公开(公告)号：US07639449B1
公开(公告)日：2009-12-29
申请号：US11059032
申请日：2005-02-15
申请人： Rickmer Kose , Brian D. Strom
发明人： Rickmer Kose , Brian D. Strom
IPC分类号： G11B33/14 , G11B21/10 , G11B21/21
CPC分类号： G11B5/6005 , G11B19/04
摘要： A disk drive includes a drive circuitry, a suspension, a slider assembly that includes a read/write head, and a pressure compensator. The pressure compensator is electrically decoupled from the drive circuitry. A portion of the pressure compensator has a volume that passively changes when an ambient pressure near the pressure compensator changes. The pressure compensator at least partially offsets a change in a head-to-disk spacing that occurs when an ambient pressure near the pressure compensator changes. The pressure compensator can exert a force on the slider assembly to change a pivot angle between the suspension and the slider assembly, and/or to change a pitch angle between the slider assembly and the storage disk. In alternate embodiments, the pressure compensator can include a piston that moves or a resilient membranous material that changes shape based on changes in ambient pressure.
摘要翻译：磁盘驱动器包括驱动电路，悬架，包括读/写头的滑块组件和压力补偿器。压力补偿器与驱动电路电耦合。当压力补偿器附近的环境压力改变时，压力补偿器的一部分具有被动地改变的体积。压力补偿器至少部分地抵消当压力补偿器附近的环境压力改变时发生的头盘与盘间的变化。压力补偿器可以在滑块组件上施加力以改变悬架和滑块组件之间的枢转角度和/或改变滑块组件和存储盘之间的俯仰角。在替代实施例中，压力补偿器可包括移动的活塞或基于环境压力变化而改变形状的弹性膜状材料。

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