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    • 51. 发明授权
    • Collocated rotating flexure microactuator for dual-stage servo in disk drives
    • 用于磁盘驱动器中双级伺服的配置旋转弯曲微型致动器
    • US06376964B1
    • 2002-04-23
    • US09860158
    • 2001-05-16
    • Kenneth F. YoungEdmund B. FanslauMuhammad A. Hawwa
    • Kenneth F. YoungEdmund B. FanslauMuhammad A. Hawwa
    • G11B556
    • G11B5/5552G11B5/4873
    • 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.
    • 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。
    • 53. 发明授权
    • Piezoelectric vibration damping for disk drives
    • 磁盘驱动器的压电振动阻尼
    • US06310746B1
    • 2001-10-30
    • US09338836
    • 1999-06-23
    • Muhammad A. HawwaJamshid Bozorgi
    • Muhammad A. HawwaJamshid Bozorgi
    • G11B5012
    • G11B33/08G11B5/4873G11B5/5552G11B5/5582G11B5/59694G11B21/00
    • 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.
    • 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。
    • 54. 发明授权
    • E-block head stack microactuator assembly
    • 电子块头组件微型制动器总成
    • US6025975A
    • 2000-02-15
    • US817863
    • 1997-05-01
    • Anoush M. FardKhosrow MohajeraniJoseph M. SampietroJeffrey G. BarinaMuhammad A. Hawwa
    • Anoush M. FardKhosrow MohajeraniJoseph M. SampietroJeffrey G. BarinaMuhammad A. Hawwa
    • G11B5/596G11B5/55G11B21/08G11B21/10G11B5/56
    • G11B5/5552G11B21/08G11B21/106G11B5/4873
    • A system for positioning a transducing head of a disc drive over a selected track (42) of a rotatable disc (40) includes an actuator assembly (20,50) having an E-block body (25) including a cavity (37), at least one actuator arm (30) extending from the E-block body (25), a head suspension mechanism (34,36,38) including the transducing head connected to an end of the actuator arm (30), and a pivot cartridge (26) in the cavity (37) in the E-block body (25). The E-block body (25) is attached to the pivot cartridge (26) and forms a hinge point (39) between the E-block body (25) and the pivot cartridge (26). A low resolution motor (22) rotates the actuator assembly (20,50) about an axis (24) to effect coarse positioning of the head with respect to the selected track (42) of the rotatable disc (40). A piezoelectric element (27,52) in the E-block body (25) is selectively expanded and contracted to distort the E-block body (25) around the hinge point (39) to effect fine positioning of the head with respect to the selected track (42) of the rotatable disc (40).
    • PCT No.PCT / US97 / 07352 Sec。 371日期1997年5月1日 102(e)日期1997年5月1日PCT提交1997年5月1日PCT公布。 公开号WO98 / 27546 日期1998年6月25日用于将盘驱动器的换能头定位在可旋转盘(40)的选定轨道(42)上的系统包括具有E形块体(25)的致动器组件(20,50) 空腔(37),从E形块体(25)延伸的至少一个致动器臂(30),包括连接到致动器臂(30)的端部的换能头的头悬挂机构(34,36,38) 以及位于E形块体(25)中的空腔(37)中的枢轴筒(26)。 E块体(25)连接到枢轴筒(26)上,并在E块体(25)和枢轴筒(26)之间形成铰链点(39)。 低分辨率马达(22)围绕轴线(24)旋转致动器组件(20,50),以实现头部相对于可旋转盘(40)的选定轨道(42)的粗略定位。 E块体(25)中的压电元件(27,52)被选择性地膨胀和收缩,以使铰链点(39)周围的E形块体(25)变形,从而使头部相对于 所述可旋转盘(40)的所选轨道(42)。