公开(公告)号：US06512659B1

公开(公告)日：2003-01-28

申请号：US10105603

申请日：2002-03-21

申请人： Muhammad A. Hawwa ,  Jamshid Bozorgi

发明人： Muhammad A. Hawwa ,  Jamshid Bozorgi

IPC分类号： G11B556

CPC分类号： G11B5/5556

摘要： The present invention is embodied in an actuator arm which is mounted to a primary actuator. The primary actuator positions the actuator arm, with a read/write head mounted to the actuator arm, across a data storage disk. The actuator arm comprises an inboard portion, an outboard portion and a pair of bimorph actuators. The inboard portion has a longitudinal axis and is attached to the primary actuator. The outboard portion has the read/write head mounted onto it. The pair of bimorph actuators are deflectable together in a common direction and are connected between the inboard and the outboard portions. Upon deflection of the bimorph actuators in the same direction, the outboard portion is translated along an at least nearly straight line transverse to the longitudinal axis of the inboard portion. This transverse motion allows the read/write head to be kept substantially within a plane parallel to the surface of the data storage disk, preventing damage caused by possible contact between slider and the disk surface from rolling the slider due to out-of-plane motions. Further, the use of bimorph actuators provide increased displacements of the read/write head. Also, since the head displacement is not a function of microactuator's position along the actuator arm, the actuator arm can be shorter, allowing for use in compact disk drives.

公开(公告)号：US06404600B1

公开(公告)日：2002-06-11

申请号：US09938088

申请日：2001-08-23

申请人： Muhammad A. Hawwa ,  Jamshid Bozorgi

发明人： Muhammad A. Hawwa ,  Jamshid Bozorgi

IPC分类号： G11B556

CPC分类号： G11B5/5556

摘要： The present invention is embodied in an actuator arm which is mounted to a primary actuator. The primary actuator positions the actuator arm, with a read/write head mounted to the actuator arm, across a data storage disk. The actuator arm comprises an inboard portion, an outboard portion and a pair of bimorph actuators. The inboard portion has a longitudinal axis and is attached to the primary actuator. The outboard portion has the read/write head mounted onto it. The pair of bimorph actuators are deflectable together in a common direction and are connected between the inboard and the outboard portions. Upon deflection of the bimorph actuators in the same direction, the outboard portion is translated along an at least nearly straight line transverse to the longitudinal axis of the inboard portion. This transverse motion allows the read/write head to be kept substantially within a plane parallel to the surface of the data storage disk, preventing damage caused by possible contact between slider and the disk surface from rolling the slider due to out-of-plane motions. Further, the use of bimorph actuators provide increased displacements of the read/write head. Also, since the head displacement is not a function of microactuator's position along the actuator arm, the actuator arm can be shorter, allowing for use in compact disk drives.

摘要翻译： 本发明体现在安装到主致动器上的致动器臂中。 主执行器将执行器臂定位在读/写头安装到致动器臂上的数据存储盘上。 致动器臂包括内侧部分，外侧部分和一对双压电晶片致动器。 内侧部分具有纵向轴线并且附接到主致动器。 外侧部分具有安装在其上的读/写头。 一对双压电晶片致动器在共同的方向上可偏转在一起，并且连接在内侧和外侧部分之间。 当双向压电致动器在相同方向上偏转时，外侧部分沿着横向于内侧部分的纵向轴线的至少几乎直线平移。 这种横向运动允许读/写头基本上保持在与数据存储盘的表面平行的平面内，防止由于平面外的运动而使滑块和盘表面之间的可能的接触滚动滑块所引起的损坏 。 此外，双压电晶片致动器的使用提供了读/写头的增加的位移。 此外，由于头位移不是微致动器沿着致动器臂的位置的函数，所以致动器臂可以更短，允许在紧凑的磁盘驱动器中使用。

公开(公告)号：US06376964B1

公开(公告)日：2002-04-23

申请号：US09860158

申请日：2001-05-16

申请人： Kenneth F. Young ,  Edmund B. Fanslau ,  Muhammad A. Hawwa

发明人： Kenneth F. Young ,  Edmund B. Fanslau ,  Muhammad A. Hawwa

IPC分类号： G11B556

CPC分类号： G11B5/5552 ,  G11B5/4873

摘要： A head gimbal assembly (10) for a disk drive (1), having a flexure (30) with a stationary portion (40) and at least one movable portion (42), a portion of the flexure (30) being attached to a load beam (28). A slider (20) containing a read/write head (22) is attached to one of the movable portions (40) of the flexure (30). The load beam (28) provides a center of rotation (54) for the slider (20) and one or more microactuators (24) connect between the stationary portion (40) of the flexure (30) and one of the movable portions (42, 44) for applying a moment which causes pure or nearly pure rotation of the slider (20) about the center of rotation (54). A disk drive (1) and an actuator arm (2) including the head gimbal assembly (10) are also disclosed.

摘要翻译： 一种用于盘驱动器（1）的头部万向架组件（10），具有带有固定部分（40）和至少一个可移动部分（42）的挠曲件（30），所述挠曲件（30）的一部分附接到 负载梁（28）。 包含读/写头（22）的滑块（20）附接到挠曲件（30）的可移动部分（40）中的一个。 负载梁（28）提供用于滑块（20）的旋转中心（54），并且一个或多个微致动器（24）连接在挠曲件（30）的固定部分（40）与可动部分（42）中的一个之间 一个磁盘驱动器（1）和包括头部万向节组件（10）的致动器臂（2），其中，所述磁头驱动器（1）和致动器臂（2） 也被披露。

公开(公告)号：US06310746B1

公开(公告)日：2001-10-30

申请号：US09338836

申请日：1999-06-23

申请人： Muhammad A. Hawwa ,  Jamshid Bozorgi

发明人： Muhammad A. Hawwa ,  Jamshid Bozorgi

IPC分类号： G11B5012

CPC分类号： G11B33/08 ,  G11B5/4873 ,  G11B5/5552 ,  G11B5/5582 ,  G11B5/59694 ,  G11B21/00

摘要： The present invention provides passive and active damping systems for reducing or substantially eliminating undesirable vibrations from components of data storage and retrieval systems. The passive and active damping systems incorporate piezoelectric materials, and make use of an advantageous property of these materials, namely the ability to convert mechanical strains into electric potentials and vice versa. The passive systems of the present invention dissipate vibrational energy through an electrical shunt circuit. The active systems seek to cancel an existing vibration in a component by generating and applying an additional vibration to the same component, where the applied vibration is out of phase with the existing vibration and the two vibrations tend to add destructively. Active systems, in certain circumstances, may also be able to anticipate predictable vibrations and proactively cancel them, rather than merely reacting to vibrations after they arise.

摘要翻译： 本发明提供了用于减少或基本消除来自数据存储和检索系统的组件的不期望的振动的无源和主动阻尼系统。 被动和主动阻尼系统包括压电材料，并且利用这些材料的有利特性，即将机械应变转化为电势的能力，反之亦然。 本发明的被动系统通过电分流电路消散振动能。 主动系统通过对相同的部件产生和施加附加的振动来消除部件中的现有振动，其中所施加的振动与现有振动异相，并且两个振动趋于增加。 在某些情况下，主动系统也可以预测可预测的振动并主动地消除它们，而不仅仅是在振动出现之后对其产生反应。