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。

公开(公告)号：US06989671B2

公开(公告)日：2006-01-24

申请号：US10342780

申请日：2003-01-14

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

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

IPC分类号： G01R33/12

CPC分类号： G11B5/6005 ,  G11B5/012 ,  G11B5/40 ,  G11B5/455 ,  G11B5/5534 ,  G11B5/596 ,  G11B5/6076 ,  G11B27/36 ,  G11B2005/001 ,  G11B2220/20

摘要： A method is described for calculating head disk interference (HDI) using a dynamic parametric test. In one embodiment, HDI is calculated based on an actual and ideal sensitivity profile based on a read-back signal track profile for the slider/head.

摘要翻译： 描述了一种使用动态参数测试来计算头盘干扰（HDI）的方法。 在一个实施例中，基于用于滑块/头的回读信号轨迹轮廓，基于实际和理想灵敏度轮廓计算HDI。

公开(公告)号：US07617737B2

公开(公告)日：2009-11-17

申请号：US11644309

申请日：2006-12-21

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

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

IPC分类号： G01L1/24

CPC分类号： G11B5/4826 ,  G11B5/455 ,  G11B5/6011

摘要： In a system and method for adjusting a static torque on a slider in a head-gimbal assembly, a substantially rigid mass is placed on an air-bearing surface (ABS) of a slider. A static attitude of the slider is measured, and an adjustment location and intensity for a flexure to yield a zero slider static attitude are calculated. The flexure is adjusted based on the measurement and calculations.

摘要翻译： 在用于调节头部万向节组件中的滑块上的静态扭矩的系统和方法中，基本上刚性的质量被放置在滑块的空气轴承表面（ABS）上。 测量滑块的静态姿势，并且计算弯曲的调整位置和强度以产生零滑块静态姿态。 基于测量和计算来调整挠曲。

公开(公告)号：US20080123214A1

公开(公告)日：2008-05-29

申请号：US11605741

申请日：2006-11-28

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

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

IPC分类号： G11B21/02

CPC分类号： G11B5/581 ,  G11B5/6029 ,  G11B5/6035

摘要： In a system and method for a non-contact measurement of the fly height of a slider above a magnetic data storage medium using electrostatic force, a slider with a read/write head flies over a magnetic data storage medium. A series of distinct voltages are applied between the slider and the magnetic data storage medium, and corresponding read-back signals are recorded. Using the recorded read-back signals, coefficients for an empirical curve-fit equation are calculated. The coefficients are normalized and converted into a fly height measurement.

公开(公告)号：US07342750B2

公开(公告)日：2008-03-11

申请号：US10870082

申请日：2004-06-16

申请人： Chao-Hui Yang ,  Yen Fu ,  Li-Yan Zhu ,  Manny Hernandez ,  Ellis T. Cha ,  Yong Luo

发明人： Chao-Hui Yang ,  Yen Fu ,  Li-Yan Zhu ,  Manny Hernandez ,  Ellis T. Cha ,  Yong Luo

IPC分类号： G11B5/48

CPC分类号： G11B5/486 ,  G11B5/484 ,  H05K1/0228 ,  H05K1/056 ,  H05K3/4685 ,  H05K2201/09554 ,  H05K2201/0969 ,  H05K2201/097

摘要： An externally wireless laminated suspension for a hard disk drive are disclosed. In one embodiment, the externally wireless laminated suspension has an insulating layer to electrically isolate a first and second electrical trace from a conductive support layer. The second electrical trace crosses over the first electrical trace. The first electrical trace may be made of a first part on one side of the second electrical trace and a second part on the opposite side of the electrical trace. A conductive island area may be patterned into the support layer. The conductive island area may electrically couple the first part of the first electrical trace to the second part. The number of crossover points that the first electrical trace has may equal the number of crossover points that the second electrical trace has.

摘要翻译： 公开了一种用于硬盘驱动器的外部无线层叠悬架。 在一个实施例中，外部无线层叠悬架具有绝缘层，以将第一和第二电迹线与导电支撑层电隔离。 第二电迹线穿过第一电迹线。 第一电迹线可以由第二电迹线的一侧上的第一部分和在电迹线的相对侧上的第二部分制成。 导电岛区域可以被图案化成支撑层。 导电岛区域可以将第一电迹线的第一部分电耦合到第二部分。 第一电迹线具有的交叉点的数量可以等于第二电迹线具有的交叉点的数量。

公开(公告)号：US07907368B2

公开(公告)日：2011-03-15

申请号：US11691437

申请日：2007-03-26

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

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

IPC分类号： G11B5/55

CPC分类号： G11B5/4826 ,  Y10T29/49826

摘要： In a balanced head gimbal assembly for improved seeking performance, a slider having a magnetic head with a set of read elements to read data and a set of write elements to write data, an air-bearing surface, and a non-air-bearing surface is coupled to a suspension. The suspension includes a loadbeam, a flexure, and a balancing weight. The loadbeam is coupled to an actuator arm. The flexure, coupled to the loadbeam, has a window through which a dimple, coupled to the loadbeam, contacts a dimple contact point. The balancing weight, coupled to the flexure, has a configuration which permits alignment of a center of mass of the head gimbal assembly with the dimple contact point.

摘要翻译： 在用于改善寻求性能的平衡头万向架组件中，具有磁头的滑块具有一组用于读取数据的读取元件和一组写入元件以写入数据，空气轴承表面和非空气轴承表面 耦合到悬架。 悬架包括载重梁，挠性件和平衡重物。 负载梁耦合到致动器臂。 耦合到负载束的挠曲件具有窗口，通过该窗口，耦合到负载束的凹部接触凹坑接触点。 耦合到挠曲件的平衡重具有允许头部万向架组件的质心与凹坑接触点对准的构造。

公开(公告)号：US07679857B2

公开(公告)日：2010-03-16

申请号：US12199761

申请日：2008-08-27

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

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

IPC分类号： G11B5/60

CPC分类号： G11B5/581 ,  G11B5/6029 ,  G11B5/6035

摘要： In a system and method for a non-contact measurement of the fly height of a slider above a magnetic data storage medium using electrostatic force, a slider with a read/write head flies over a magnetic data storage medium. A series of distinct voltages are applied between the slider and the magnetic data storage medium, and corresponding read-back signals are recorded. Using the recorded read-back signals, coefficients for an empirical curve-fit equation are calculated. The coefficients are normalized and converted into a fly height measurement.

摘要翻译： 在使用静电力对磁性数据存储介质上方的滑块的飞行高度进行非接触式测量的系统和方法中，具有读/写头的滑块飞越磁数据存储介质。 在滑块和磁数据存储介质之间施加一系列不同的电压，并记录相应的读回信号。 使用记录的回读信号，计算经验曲线拟合方程的系数。 系数被归一化并转换成飞行高度测量。

公开(公告)号：US20080151430A1

公开(公告)日：2008-06-26

申请号：US11644309

申请日：2006-12-21

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

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

IPC分类号： G11B5/48

CPC分类号： G11B5/4826 ,  G11B5/455 ,  G11B5/6011

摘要： In a system and method for adjusting a static torque on a slider in a head-gimbal assembly, a substantially rigid mass is placed on an air-bearing surface (ABS) of a slider. A static attitude of the slider is measured, and an adjustment location and intensity for a flexure to yield a zero slider static attitude are calculated. The flexure is adjusted based on the measurement and calculations.

摘要翻译： 在用于调节头部万向节组件中的滑块上的静态扭矩的系统和方法中，基本上刚性的质量被放置在滑块的空气轴承表面（ABS）上。 测量滑块的静态姿势，并且计算弯曲的调整位置和强度以产生零滑块静态姿态。 基于测量和计算来调整挠曲。

公开(公告)号：US08027127B2

公开(公告)日：2011-09-27

申请号：US12932551

申请日：2011-02-28

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

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

IPC分类号： G11B5/55

CPC分类号： G11B5/4826 ,  Y10T29/49826

摘要： In a balanced head gimbal assembly for improved seeking performance, a slider having a magnetic head with a set of read elements to read data and a set of write elements to write data, an air-bearing surface, and a non-air-bearing surface is coupled to a suspension. The suspension includes a loadbeam, a flexure, and a balancing weight. The loadbeam is coupled to an actuator arm. The flexure, coupled to the loadbeam, has a window through which a dimple, coupled to the loadbeam, contacts a dimple contact point. The balancing weight, coupled to the flexure, has a configuration which permits alignment of a center of mass of the head gimbal assembly with the dimple contact point.

摘要翻译： 在用于改善寻求性能的平衡头万向架组件中，具有磁头的滑块具有一组用于读取数据的读取元件和一组写入元件以写入数据，空气轴承表面和非空气轴承表面 耦合到悬架。 悬架包括载重梁，挠性件和平衡重物。 负载梁耦合到致动器臂。 耦合到负载束的挠曲件具有窗口，通过该窗口，耦合到负载束的凹部接触凹坑接触点。 耦合到挠曲件的平衡重具有允许头部万向架组件的质心与凹坑接触点对准的构造。

公开(公告)号：US20110146047A1

公开(公告)日：2011-06-23

申请号：US12932551

申请日：2011-02-28

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

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

IPC分类号： B23P11/00

CPC分类号： G11B5/4826 ,  Y10T29/49826

摘要： In a balanced head gimbal assembly for improved seeking performance, a slider having a magnetic head with a set of read elements to read data and a set of write elements to write data, an air-bearing surface, and a non-air-bearing surface is coupled to a suspension. The suspension includes a loadbeam, a flexure, and a balancing weight. The loadbeam is coupled to an actuator arm. The flexure, coupled to the loadbeam, has a window through which a dimple, coupled to the loadbeam, contacts a dimple contact point. The balancing weight, coupled to the flexure, has a configuration which permits alignment of a center of mass of the head gimbal assembly with the dimple contact point.