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    Method for testing a micro-actuator in a magnetic tester
    1.
    发明授权
    Method for testing a micro-actuator in a magnetic tester 失效
    用于测试磁性测试仪中微型致动器的方法

    公开(公告)号：US07085083B2

    公开(公告)日：2006-08-01

    申请号：US10728450

    申请日：2003-12-05

    申请人： Li-Yan Zhu ,  Chao-Hui Yang ,  Xiaofeng Zhang ,  Yen Fu ,  Ellis T. Cha

    发明人： Li-Yan Zhu ,  Chao-Hui Yang ,  Xiaofeng Zhang ,  Yen Fu ,  Ellis T. Cha

    IPC分类号： G11B27/36

    CPC分类号： G11B5/455 ,  G11B5/54

    摘要： A system and method for testing the stroke and frequency response of a micro-actuator is disclosed. A dynamic parameter tester writes two concentric tracks on a noise free portion of a magnetic storage medium. A magnetic read/write head and a micro-actuator is positioned between the two concentric tracks. An initial oscillating voltage is applied at a first frequency to the micro-actuator while reading back a signal from the two concentric tracks. A stroke characteristic of the micro-actuator is calculated based in part on the read-back signal. The initial oscillating voltage is determined from previous tests. The first stroke characteristic of the micro-actuator is based on a time-averaged amplitude of the first signal. The two concentric tracks are written at a pre-determined pitch.

    摘要翻译： 公开了一种用于测试微致动器的行程和频率响应的系统和方法。 动态参数测试仪在磁存储介质的无噪声部分上写入两个同心轨道。 磁读/写头和微致动器位于两个同心轨道之间。 初始振荡电压以第一频率施加到微致动器，同时从两个同心轨道读回信号。 部分地基于回读信号计算微致动器的行程特性。 初始振荡电压由先前的测试确定。 微致动器的第一冲程特性是基于第一信号的时间平均振幅。 两个同心轨道以预定间距进行写入。

    Method for testing a micro-actuator in a magnetic tester
    3.
    发明申请
    Method for testing a micro-actuator in a magnetic tester 失效
    用于测试磁性测试仪中微型致动器的方法

    公开(公告)号：US20050122607A1

    公开(公告)日：2005-06-09

    申请号：US10728450

    申请日：2003-12-05

    申请人： Li-Yan Zhu ,  Chao-Hui Yang ,  Xiaofeng Zhang ,  Yen Fu ,  Ellis Cha

    发明人： Li-Yan Zhu ,  Chao-Hui Yang ,  Xiaofeng Zhang ,  Yen Fu ,  Ellis Cha

    IPC分类号： G11B20060101 ,  G11B5/455 ,  G11B5/54 ,  G11B21/02 ,  G11B27/36

    CPC分类号： G11B5/455 ,  G11B5/54

    摘要： A system and method for testing the stroke and frequency response of a micro-actuator is disclosed. A dynamic parameter tester writes two concentric tracks on a noise free portion of a magnetic storage medium. A magnetic read/write head and a micro-actuator is positioned between the two concentric tracks. An initial oscillating voltage is applied at a first frequency to the micro-actuator while reading back a signal from the two concentric tracks. A stroke characteristic of the micro-actuator is calculated based in part on the read-back signal. The initial oscillating voltage is determined from previous tests. The first stroke characteristic of the micro-actuator is based on a time-averaged amplitude of the first signal. The two concentric tracks are written at a pre-determined pitch.

    摘要翻译： 公开了一种用于测试微致动器的行程和频率响应的系统和方法。 动态参数测试仪在磁存储介质的无噪声部分上写入两个同心轨道。 磁读/写头和微致动器位于两个同心轨道之间。 初始振荡电压以第一频率施加到微致动器，同时从两个同心轨道读回信号。 部分地基于回读信号计算微致动器的行程特性。 初始振荡电压由先前的测试确定。 微致动器的第一冲程特性是基于第一信号的时间平均振幅。 两个同心轨道以预定间距进行写入。

    Electrical current as probe for modulation at head-disk interface
    4.
    发明授权
    Electrical current as probe for modulation at head-disk interface 有权
    电流作为头磁盘接口调制的探头

    公开(公告)号：US08139306B2

    公开(公告)日：2012-03-20

    申请号：US10982604

    申请日：2004-11-04

    申请人： Zhu Feng ,  Xiaofeng Zhang ,  Ellis T. Cha

    发明人： Zhu Feng ,  Xiaofeng Zhang ,  Ellis T. Cha

    IPC分类号： G11B21/02 ,  G11B27/36 ,  G01R27/26

    CPC分类号： G11B5/455 ,  G11B5/40 ,  G11B5/4555 ,  G11B5/6017 ,  G11B5/6058

    摘要： A system and method for measuring the modulation between a magnetic head and a magnetic storage medium, such as a disk, is disclosed. A magnetic read/write head is positioned above a magnetic storage medium at a given flying height. The magnetic read/write head reads a signal from the magnetic storage medium. A tester measures an alternating electric current between the magnetic read/write head through the slider and the magnetic storage medium. A computer may then calculate the modulation by the magnetic read/write head based on the alternating electric current. A DC voltage to the head may be applied to lower the flying height of the magnetic head.

    摘要翻译： 公开了一种用于测量诸如磁盘的磁头和磁存储介质之间的调制的系统和方法。 在给定的飞行高度处，磁读/写头位于磁存储介质上方。 磁读/写头读取来自磁存储介质的信号。 测试仪测量通过滑动器的磁读/写磁头与磁存储介质之间的交流电流。 计算机然后可以基于交流电流计算磁读/写头的调制。 可以施加到头部的DC电压以降低磁头的飞行高度。

    Electrical current as probe for modulation at head-disk interface
    6.
    发明申请
    Electrical current as probe for modulation at head-disk interface 有权
    电流作为头磁盘接口调制的探头

    公开(公告)号：US20110299191A1

    公开(公告)日：2011-12-08

    申请号：US13065941

    申请日：2011-04-01

    申请人： Zhu Feng ,  Xiaofeng Zhang ,  Ellis T. Cha

    发明人： Zhu Feng ,  Xiaofeng Zhang ,  Ellis T. Cha

    IPC分类号： G11B21/02

    CPC分类号： G11B5/455 ,  G11B5/40 ,  G11B5/4555 ,  G11B5/6017 ,  G11B5/6058

    摘要： A system and method for measuring the modulation between a magnetic head and a magnetic storage medium, such as a disk, is disclosed. A magnetic read/write head is positioned above a magnetic storage medium at a given flying height. The magnetic read/write head reads a signal from the magnetic storage medium. A tester measures an alternating electric current between the magnetic read/write head through the slider and the magnetic storage medium. A computer may then calculate the modulation by the magnetic read/write head based on the alternating electric current. A DC voltage to the head may be applied to lower the flying height of the magnetic head.

    摘要翻译： 公开了一种用于测量诸如磁盘的磁头和磁存储介质之间的调制的系统和方法。 在给定的飞行高度处，磁读/写头位于磁存储介质上方。 磁读/写头读取来自磁存储介质的信号。 测试仪测量通过滑动器的磁读/写磁头与磁存储介质之间的交流电流。 计算机然后可以基于交流电流计算磁读/写头的调制。 可以施加到头部的DC电压以降低磁头的飞行高度。

    Electrical current measurements at head-disk interface
    7.
    发明申请
    Electrical current measurements at head-disk interface 审中-公开
    头磁盘接口电流测量

    公开(公告)号：US20050174665A1

    公开(公告)日：2005-08-11

    申请号：US10775658

    申请日：2004-02-09

    申请人： Xiaofeng Zhang ,  Zhu Feng ,  Ellis Cha ,  Yen Fu

    发明人： Xiaofeng Zhang ,  Zhu Feng ,  Ellis Cha ,  Yen Fu

    IPC分类号： G11B5/012 ,  G11B5/02 ,  G11B5/40

    CPC分类号： G11B5/40

    摘要： According to an embodiment of the present invention, head/disk contact events are determined through a measurement of current at the head disk interface. For example, an ammeter/voltage source component may be electrically coupled to a magnetic/slider of a disk drive as well as to a spindle coupled to the recording medium. Applied voltage to the slider may result in a lower flying height. Greater measured current by the ammeter could indicate head/disk contact and assist in adjusting applied voltage to obtain a desire flying height.

    摘要翻译： 根据本发明的实施例，头/盘接触事件通过头磁盘接口处的电流测量来确定。 例如，电流表/电压源组件可以电耦合到盘驱动器的磁/滑块以及耦合到记录介质的主轴。 对滑块施加的电压可能导致较低的飞行高度。 通过电流表测量的电流可以指示头/盘接触，并有助于调整施加的电压以获得期望的飞行高度。

    Working component for mating with multiple shaft ends
    10.
    发明授权
    Working component for mating with multiple shaft ends 有权
    用于与多个轴端配合的工作部件

    公开(公告)号：US09120216B2

    公开(公告)日：2015-09-01

    申请号：US13005103

    申请日：2011-01-12

    申请人： Xiaofeng Zhang ,  Baijun Zhang

    发明人： Xiaofeng Zhang ,  Baijun Zhang

    IPC分类号： B23B31/02 ,  B25F1/00 ,  B23D61/00 ,  B24B23/04 ,  B24B27/08 ,  B24B45/00 ,  B27B5/32

    CPC分类号： B25F1/00 ,  B23D61/006 ,  B24B23/04 ,  B24B27/08 ,  B24B45/00 ,  B27B5/32 ,  Y10T279/33 ,  Y10T279/3406

    摘要： A working component for mating with multiple shaft ends includes a body portion and a clamping portion which is connected to the body portion and suitable for mounting the working component to the shaft ends. The body portion has a work piece processing area for acting on the work piece to be processed and the clamping portion has a mounting hole with a longitudinal axis Y. The clamping portion includes a support portion and a mating portion which are overlapped along the direction of the longitudinal axis Y.

    摘要翻译： 用于与多个轴端配合的工作部件包括主体部分和夹紧部分，其连接到主体部分并且适于将工作部件安装到轴端部。 主体部分具有用于作用在待加工的工件上的工件处理区域，并且夹持部分具有具有纵向轴线Y的安装孔。夹持部分包括支撑部分和配合部分，该支撑部分和配合部分沿着 纵轴Y.