公开(公告)号：US20080247088A1

公开(公告)日：2008-10-09

申请号：US11730997

申请日：2007-04-05

申请人： MingGao Yao ,  Lin Guo ,  Yu Sun

发明人： MingGao Yao ,  Lin Guo ,  Yu Sun

IPC分类号： G11B5/48

CPC分类号： G11B5/5552

摘要： Certain example embodiments described herein relate to a micro-actuator for use with an HGA and/or disk drive device. A substantially U-shaped frame may include a cavity capable of receiving a slider. The frame may include two segmented, flexible side arms and a bottom support arm at least partially defining the cavity. Each segmented side arm may have a PZT element mounted on an outer surface thereof facing away from the cavity, and each may include a lower portion proximate to the bottom support arm and an upper portion disposed at an end opposing the bottom support arm. The lower portion and the upper portion may be at least partially separated by a gap. Accordingly, micro-actuators having better resonance and servo performance, reduced difficulties associated with the slider/micro-actuator mounting process, and/or better shock performance may be provided.

摘要翻译： 本文所述的某些示例性实施例涉及用于与HGA和/或盘驱动装置一起使用的微致动器。 基本上U形的框架可以包括能够容纳滑块的空腔。 框架可以包括两个分段的柔性侧臂和至少部分地限定空腔的底部支撑臂。 每个分段侧臂可以具有安装在其远离空腔的外表面上的PZT元件，并且每个可包括靠近底部支撑臂的下部和设置在与底部支撑臂相对的端部处的上部。 下部和上部可以至少部分地被间隙分开。 因此，可以提供具有更好的谐振和伺服性能的微致动器，减少与滑块/微执行器安装过程相关的困难和/或更好的冲击性能。

公开(公告)号：US07405554B2

公开(公告)日：2008-07-29

申请号：US11512215

申请日：2006-08-30

申请人： MingGao Yao

发明人： MingGao Yao

IPC分类号： G01P3/42 ,  G01B7/30

CPC分类号： G01P3/48 ,  G01D5/145 ,  G01P3/487 ,  G01P3/66

摘要： Systems and/or methods for detecting a rotating wheel's speed and/or acceleration are provided. A sensor is attached to the rotating wheel. The sensor includes a circuit (e.g. a Wheatstone bridge circuit) having a plurality of resistors (e.g. 4 resistors). Each resistor includes a giant magnetoresistance (GMR) element and has a resistance changeable based at least in part on a change in magnetic field intensity with respect to an external magnetic field. The sensor generates a signal based at least in part on the resistors' resistances. A processor is operable to calculate the rotating wheel's speed and/or acceleration based at least in part on the signal.

摘要翻译： 提供了用于检测转轮速度和/或加速度的系统和/或方法。 传感器连接到旋转轮。 传感器包括具有多个电阻器（例如4个电阻器）的电路（例如惠斯通电桥电路）。 每个电阻器包括巨磁阻（GMR）元件，并且至少部分地基于磁场强度相对于外部磁场的变化具有可改变的电阻。 该传感器至少部分地基于电阻器的电阻产生信号。 处理器可操作以至少部分地基于该信号来计算旋转轮的速度和/或加速度。

公开(公告)号：US20070000110A1

公开(公告)日：2007-01-04

申请号：US11169019

申请日：2005-06-29

申请人： MingGao Yao

发明人： MingGao Yao

IPC分类号： H04R17/00

CPC分类号： H04R17/04 ,  Y10T29/42 ,  Y10T29/435 ,  Y10T29/49025 ,  Y10T29/49034

摘要： A method for manufacturing a head gimbal assembly incorporating a PZT micro-actuator includes providing a PZT element, mounting the PZT element to a micro-actuator to provide a PZT micro-actuator, mounting a slider to the PZT micro-actuator to provide a slider and PZT micro-actuator assembly, mounting the slider and PZT micro-actuator assembly to a head gimbal assembly, electrically connecting the slider and PZT micro-actuator assembly to the head gimbal assembly, and treating the PZT element.

摘要翻译： 一种制造包含PZT微致动器的头万向架组件的方法包括提供PZT元件，将PZT元件安装到微致动器以提供PZT微型致动器，将滑块安装到PZT微致动器以提供滑动件 和PZT微致动器组件，将滑块和PZT微致动器组件安装到头万向架组件中，将滑块和PZT微致动器组件电连接到头万向节组件，以及处理PZT元件。

公开(公告)号：US08225655B2

公开(公告)日：2012-07-24

申请号：US12000833

申请日：2007-12-18

申请人： MingGao Yao

发明人： MingGao Yao

IPC分类号： G01L7/20

CPC分类号： G11B25/043 ,  G11B33/14 ,  G11B33/1486

摘要： An altitude sensor includes a support frame and a sensor unit mounted in the support frame. The support frame has an upper shield and a lower shield. The sensor unit includes a beam and a damper. The damper is configured to move up and down in response to the air flow, which drives the beam to move up and down accordingly. Distances from the damper to the upper shield and the lower shield are less than those from the beam to upper shield and the lower shield. The altitude sensor possesses super specific properties such as unlimited sensitivity to flying height because of no size constraints and unchanged sensitivity under a changing environment, a selfprotective mechanism to resist deformation in case of an accident, easy manufacture process as well as low production cost. The present invention also discloses an altitude sensor for use in a disk drive device and a disk drive device with the altitude sensor.

摘要翻译： 高度传感器包括支撑框架和安装在支撑框架中的传感器单元。 支撑框架具有上屏蔽和下屏蔽。 传感器单元包括一个梁和一个阻尼器。 阻尼器被配置为响应于空气流动而上下移动，从而驱动梁相应地上下移动。 从阻尼器到上护罩和下护罩的距离小于从梁到上护罩和下护罩的距离。 高度传感器具有超高的特性，如飞行高度无限制，无变化环境下的尺寸限制和灵敏度不变，在发生事故时能够抵抗变形的自我保护机制，制造过程简单，生产成本低。 本发明还公开了一种用于磁盘驱动装置的高度传感器和具有高度传感器的磁盘驱动装置。

公开(公告)号：US08130469B2

公开(公告)日：2012-03-06

申请号：US11878872

申请日：2007-07-27

申请人： MingGao Yao

发明人： MingGao Yao

IPC分类号： G11B5/48

CPC分类号： G11B5/4833 ,  G11B5/4813 ,  G11B5/5552 ,  G11B5/5582

摘要： A suspension for a HGA includes a flexure having a tongue region and an outrigger. The outrigger has a pair of rigid beams and a pair of spring beams. The pair of spring beams enables the flexure to possess favorable flexibility and assists a slider to have enough displacement. The pair of rigid beams provides the flexure enough stiffness which not only successfully prevents the HGA with the outrigger from suspension deformation and dimple separation, but also assists to improve shock performance of the HGA. Furthermore, such configuration of the suspension provides the slider a good static performance and thus improves dynamic performance of the HGA. The present invention also discloses a HGA with the suspension, a manufacturing method of the HGA, and a drive unit with such an HGA.

摘要翻译： 用于HGA的悬架包括具有舌部区域和外伸支架的弯曲部。 外伸支架具有一对刚性梁和一对弹簧梁。 这对弹簧梁使得弯曲具有良好的灵活性并且有助于滑块具有足够的位移。 这对刚性梁提供了足够的弯曲刚度，这不仅可以成功地防止悬臂梁上的HGA悬浮变形和凹坑分离，而且有助于提高HGA的冲击性能。 此外，悬架的这种配置为滑块提供了良好的静态性能，从而提高了HGA的动态性能。 本发明还公开了具有悬架的HGA，HGA的制造方法和具有这种HGA的驱动单元。

公开(公告)号：US07663843B2

公开(公告)日：2010-02-16

申请号：US11263998

申请日：2005-11-02

申请人： MingGao Yao

发明人： MingGao Yao

IPC分类号： G11B5/56

CPC分类号： G11B5/5552 ,  G11B5/486

摘要： A flex cable frame assembly for a head gimbal assembly includes a micro-actuator frame and a flex cable mounted to the micro-actuator frame. The flex cable includes a first set of bonding pads provided to one end of the flex cable, a second set of bonding pads provided to an opposing end of the flex cable, and a trace integrated to the flex cable that interconnects the first set of bonding pads and the second set of bonding pads.

摘要翻译： 用于头部万向架组件的柔性电缆框架组件包括微致动器框架和安装到微致动器框架的柔性电缆。 柔性电缆包括设置在柔性电缆的一端的第一组接合焊盘，设置在柔性电缆的相对端的第二组接合焊盘，以及集成到柔性电缆的迹线，其将第一组接合 垫和第二组接合垫。

公开(公告)号：US20090290263A1

公开(公告)日：2009-11-26

申请号：US12153618

申请日：2008-05-21

申请人： MingGao Yao ,  Yu Sun

发明人： MingGao Yao ,  Yu Sun

IPC分类号： G11B5/56 ,  B32B38/10

CPC分类号： G11B5/5552 ,  Y10T29/42

摘要： A piezoelectric element comprises a first laminated structure body and a second laminated structure body. Side surfaces of the first and the second laminated structure bodies that are parallel to a laminating direction both have at least a portion etched to form a recess so that a step distance is formed between sides of the two adjacent electrode layers that are parallel to the laminating direction. The design of the step distance of the present invention increases insulation resistance between the two adjacent electrode layers on the opposite surfaces of the piezoelectric layer, lowers reject rate, and reduce manufacture cost. The first and the second laminated structure bodies are symmetrically laminated and bonded together, thus optimizing force balancing performance. The recess of the first and second laminated structure body may be filled with insulation resin, which also increases insulation resistance between the two adjacent electrode layers of the piezoelectric layer. The present invention also discloses a method of manufacturing a PZT element, a HGA with the PZT element and a disk drive unit having such HGA.

摘要翻译： 压电元件包括​​第一层叠结构体和第二层叠结构体。 与层叠方向平行的第一层叠结构体和第二层叠结构体的侧面均具有至少一部分被蚀刻以形成凹部，从而在平行于层叠的两个相邻的电极层的侧面之间形成台阶距离 方向。 本发明的台阶距离的设计提高了在压电层的相对表面上的两个相邻电极层之间的绝缘电阻，降低了废品率，并降低了制造成本。 第一和第二层压结构体对称地层压在一起，从而优化力平衡性能。 第一和第二层叠结构体的凹部可以填充绝缘树脂，这也增加了压电层的两个相邻电极层之间的绝缘电阻。 本发明还公开了一种制造PZT元件的方法，具有PZT元件的HGA和具有这种HGA的盘驱动单元。

公开(公告)号：US07538984B2

公开(公告)日：2009-05-26

申请号：US11304544

申请日：2005-12-16

申请人： MingGao Yao

发明人： MingGao Yao

IPC分类号： G11B5/56

CPC分类号： G11B5/596 ,  G11B5/4826 ,  G11B5/5552

摘要： A micro-actuator for a head gimbal assembly includes a metal frame, PZT elements, and a rigid beam. The metal frame includes a top support adapted to support a slider of the head gimbal assembly, and a pair of side arms extending vertically from respective sides of the top support. The top support includes a rotatable plate and connection arms that couple the rotatable plate to respective side arms. A PZT element is mounted to each of the side arms. Each PZT element is excitable to cause selective movement of the side arms. The rigid beam is mounted between the side arms at an end opposite the top support.

摘要翻译： 用于头部万向节组件的微致动器包括金属框架，PZT元件和刚性梁。 金属框架包括适于支撑头部万向节组件的滑块的顶部支撑件和从顶部支撑件的相应侧面垂直延伸的一对侧臂。 顶部支撑件包括可旋转板和将可旋转板联接到相应侧臂的连接臂。 PZT元件安装到每个侧臂。 每个PZT元件是可激励的，以引起侧臂的选择性移动。 刚性梁在与顶部支撑件相对的端部处安装在侧臂之间。

公开(公告)号：US20090027808A1

公开(公告)日：2009-01-29

申请号：US11878871

申请日：2007-07-27

申请人： MingGao Yao

发明人： MingGao Yao

IPC分类号： G11B5/56

CPC分类号： G11B5/5552

摘要： A method of testing a performance of a HGA including a magnetic head and a micro-actuator for precisely positioning the magnetic head with respect to a magnetic medium is disclosed. The key of the method is to obtain three track center values under conditions of no driving the micro-actuator, driving the micro-actuator in a positive direction using an operating DC voltage, and driving the micro-actuator in a negative direction using the operating DC voltage respectively, and finally do calculation of the three track center values, thus successfully obtains the displacement performance of the micro-actuator in a simple way. The method is capable of testing the HGA's performance under lower operating voltage by moving the slider by a predetermined distance toward an off-track direction, which accordingly assists to identify three track center values and thereby ensures the method an accurate measurement.

摘要翻译： 公开了一种测试包括磁头和微致动器的HGA的性能的方法，用于相对于磁介质精确地定位磁头。 该方法的关键是在不驱动微致动器的条件下获得三个轨道中心值，使用工作的直流电压驱动微致动器在正方向，并使用操作的方向驱动微致动器的负方向 直流电压，最后进行三轨中心值的计算，从而以简单的方式成功地获得了微型致动器的位移性能。 该方法能够通过将滑块向偏离磁道方向移动预定距离来测试较低工作电压下的HGA性能，从而有助于识别三个磁道中心值，从而确保该方法的精确测量。

公开(公告)号：US20080053245A1

公开(公告)日：2008-03-06

申请号：US11512215

申请日：2006-08-30

申请人： MingGao Yao

发明人： MingGao Yao

IPC分类号： G01L3/00

CPC分类号： G01P3/48 ,  G01D5/145 ,  G01P3/487 ,  G01P3/66

摘要： Systems and/or methods for detecting a rotating wheel's speed and/or acceleration are provided. A sensor is attached to the rotating wheel. The sensor includes a circuit (e.g. a Wheatstone bridge circuit) having a plurality of resistors (e.g. 4 resistors). Each resistor includes a giant magnetoresistance (GMR) element and has a resistance changeable based at least in part on a change in magnetic field intensity with respect to an external magnetic field. The sensor generates a signal based at least in part on the resistors' resistances. A processor is operable to calculate the rotating wheel's speed and/or acceleration based at least in part on the signal.