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1. 发明申请

WO1998037552A1 PIEZOELECTRIC HEAD LOADING AND UNLOADING DEVICE FOR RIGID DISC DRIVES 审中-公开
标题翻译：用于刚性碟驱动的压电头加载和卸载装置
公开(公告)号：WO1998037552A1
公开(公告)日：1998-08-27
申请号：PCT/US1997002737
申请日：1997-02-24
申请人： SEAGATE TECHNOLOGY, INC. , SAMPIETRO, Joseph, M. , MOHAJERANI, Khosrow , FARD, Anoush, M. , KRUM, Richard, G. , BARINA, Jeffrey, G. , HAWWA, Muhammad, A.
发明人： SEAGATE TECHNOLOGY, INC.
IPC分类号： G11B05/54
CPC分类号： G11B5/6005 , G11B5/54 , G11B21/12 , G11B21/21
摘要： A system for loading a transducing head (22) to a flying elevation proximate a rotating surface of a disc (16) is disclosed. The system includes a piezoelectric device (40) that is selectively expanded and contracted to control a height of the head (22) on a flexure spring (14) from the surface of the disc (16). The system preferably includes control circuitry (50) for generating electrical control signals to manage the expansion and contraction of the piezoelectric device (40) according to operating characteristics of the disc (16).
摘要翻译：公开了一种用于将传感头（22）加载到靠近盘（16）的旋转表面的飞行高度的系统。该系统包括压电装置（40），其被选择性地膨胀和收缩以控制来自盘（16）的表面的挠曲弹簧（14）上的头部（22）的高度。该系统优选地包括用于根据盘（16）的操作特性产生电控信号以控制压电装置（40）的膨胀和收缩的控制电路（50）。

2. 发明申请

WO1998027547A1 BIMORPH PIEZOELECTRIC MICROACTUATOR HEAD AND FLEXURE ASSEMBLY 审中-公开
标题翻译： BIMORPH压电微处理器头和弯曲组件
公开(公告)号：WO1998027547A1
公开(公告)日：1998-06-25
申请号：PCT/US1997007233
申请日：1997-05-05
申请人： SEAGATE TECHNOLOGY, INC. , HAWWA, Muhammad, A. , SAMPIETRO, Joseph, M. , FARD, Anoush, M. , BARINA, Jeffrey, G. , MOHAJERANI, Khosrow
发明人： SEAGATE TECHNOLOGY, INC.
IPC分类号： G11B05/58
CPC分类号： G11B5/6005 , G11B5/4813 , G11B5/5552 , G11B5/596 , G11B5/59605
摘要： A head flexure assembly (40) for positioning a transducing head (25) over a selected track (34) of a rotatable disc (30) in a disc drive system (10) having an actuator arm (16) and head suspension (18) includes a bimorph piezoelectric microactuator (46) having first and second ends. The first end of the microactuator (46) is attached to the actuator arm (16), and a flexure (22) is attached to the second end of the microactuator (46). A slider (24) carrying the transducing head (25) is attached to the flexure (22).
摘要翻译：一种用于将传感头（25）定位在具有致动器臂（16）和磁头悬架（18）的盘驱动系统（10）中的可旋转盘（30）的选定轨道（34）上的头部挠曲组件（40）包括具有第一和第二端的双压电晶片压电微致动器（46）。微致动器（46）的第一端附接到致动器臂（16），并且挠曲件（22）附接到微型致动器（46）的第二端。承载转换头（25）的滑块（24）附接到挠曲件（22）。

3. 发明申请

WO1998027546A1 E-BLOCK HEAD STACK MICROACTUATOR ASSEMBLY 审中-公开
标题翻译：电子书架堆栈微处理器总成
公开(公告)号：WO1998027546A1
公开(公告)日：1998-06-25
申请号：PCT/US1997007352
申请日：1997-05-01
申请人： SEAGATE TECHNOLOGY, INC. , FARD, Anoush, M. , MOHAJERANI, Khosrow , SAMPIETRO, Joseph, M. , BARINA, Jeffrey, G. , HAWWA, Muhammad, A.
发明人： SEAGATE TECHNOLOGY, INC.
IPC分类号： G11B05/55
CPC分类号： G11B5/5552 , G11B5/4873 , G11B21/08 , G11B21/106
摘要： 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).
摘要翻译：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）上的系统包括具有包括空腔（37）的E形块体（25）的致动器组件（20,50）从所述E形块主体（25）延伸的至少一个致动器臂（30），包括连接到所述致动器臂（30）的端部的所述换能头的头部悬挂机构（34,36,38）（26）在E块体（25）中的空腔（37）中。 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）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，以使头部相对于所述可旋转盘（40）的所选轨道（42）。

4. 发明申请

WO1998020486A1 ACTUATOR ARM INTEGRATED PIEZOELECTRIC MICROACTUATOR 审中-公开
标题翻译：执行器ARM集成压电微处理器
公开(公告)号：WO1998020486A1
公开(公告)日：1998-05-14
申请号：PCT/US1997007892
申请日：1997-05-12
申请人： SEAGATE TECHNOLOGY, INC. , MOHAJERANI, Khosrow , SAMPIETRO, Joseph, M. , FARD, Anoush, M. , BARINA, Jeffrey, G. , HAWWA, Muhammad, A. , VOLZ, LeRoy, A. , LE, Tien, Q. , VIGIL, Daniel, R.
发明人： SEAGATE TECHNOLOGY, INC.
IPC分类号： G11B05/55
CPC分类号： G11B5/54 , G11B5/4873 , G11B5/5552 , G11B21/085 , G11B21/24 , Y10T29/49025
摘要： A system for positioning a transducing head in a disc drive device (10) over a selected track of a rotatable disc (30) includes an actuator arm (16) which is rotatable about an axis (14), a head suspension mechanism (18) connected to the actuator arm (16), and a slider (24) carrying a transducing head and supported by the head suspension mechanism (18). A low resolution motor (12) moves the actuator arm (16) about the axis (14) to effect coarse movement of the head between tracks of the disc (30). A piezoelectric element (26) is embedded in the actuator arm (16) to distort the arm to effect fine positioning of the head. Control circuitry (50, 52, 54, 58) distributes electrical signals to the low resolution motor (12, 60) and the piezoelectric element (26, 56) to selectively control movement thereof. The piezoelectric element (26) is embedded in the actuator arm (16) by removing a predetermined amount of material from the actuator arm (16) and bonding the piezoelectric element (26) in the resulting space in the actuator arm (16).
摘要翻译：用于将转换头定位在可旋转盘（30）的选定轨道上的盘驱动装置（10）中的系统包括可围绕轴线（14）旋转的致动器臂（16），头悬挂机构（18）连接到致动器臂（16），以及滑动器（24），其承载有传感头并由头部悬挂机构（18）支撑。低分辨率马达（12）围绕轴线（14）移动致动器臂（16），以使头部在盘（30）的轨迹之间进行粗略移动。压电元件（26）嵌入致动器臂（16）中以使臂扭曲以实现头部的精细定位。控制电路（50,52,54,58）将电信号分配给低分辨率电动机（12,60）和压电元件（26,56）以选择性地控制其运动。通过从致动器臂（16）中除去预定量的材料并将压电元件（26）接合到致动器臂（16）中的所得空间中，将压电元件（26）嵌入在致动器臂（16）中。

5. 发明申请

WO1998059340A1 SLIDER FOR OPTICAL DISC DATA STORAGE SYSTEM 审中-公开
标题翻译：光盘数据存储系统滑盖
公开(公告)号：WO1998059340A1
公开(公告)日：1998-12-30
申请号：PCT/US1997018068
申请日：1997-10-07
申请人： SEAGATE TECHNOLOGY, INC.
发明人： SEAGATE TECHNOLOGY, INC. , BOUTAGHOU, Zine-Eddine
IPC分类号： G11B17/00
CPC分类号： B82Y10/00 , G11B7/122 , G11B7/1372 , G11B7/1384 , G11B11/10554 , G11B11/1058
摘要： An optical disc data storage system (10) includes an optical disc (12) having a data surface. An actuator arm (24) having a distal end is selectively radially positionable adjacent the data surface. A transducing element (30) is carried on a slider (20) which is coupled to the distal end of the actuator arm (24). The slider (20) includes an air bearing surface (56) and the transducing element (30) includes an optical mesa (54) adjacent the air bearing surface (56). The optical mesa (54) is spaced apart from the data surface whereby contact between the data surface and the mesa structure (54) is prevented.
摘要翻译：光盘数据存储系统（10）包括具有数据表面的光盘（12）。具有远端的致动器臂（24）可选择性地在数据表面附近定位。转换元件（30）承载在联接到致动器臂（24）的远端的滑块（20）上。滑块（20）包括空气支承表面（56），并且换能元件（30）包括邻近空气轴承表面（56）的光学台面（54）。光学台面（54）与数据表面间隔开，从而防止数据表面和台面结构（54）之间的接触。

6. 发明申请

WO1998049677A1 OBJECT POSITIONING USING DISCRETE SLIDING MODE CONTROL WITH VARIABLE PARAMETERS 审中-公开
标题翻译：使用具有可变参数的离散滑动模式控制的对象定位
公开(公告)号：WO1998049677A1
公开(公告)日：1998-11-05
申请号：PCT/US1997017655
申请日：1997-09-30
申请人： SEAGATE TECHNOLOGY, INC.
发明人： SEAGATE TECHNOLOGY, INC. , LIU, Zhiqiang , FUNCHES, Otis, L. , HAMPSHIRE, Randall, D.
IPC分类号： G11B05/55
CPC分类号： G11B5/5582
摘要： Apparatus and method for improving vibration and mechanical shock response of a control system through the use of discrete-time sliding mode control with variable parameters are disclosed. A servo circuit (150) for positioning a head (118) of a disc drive (100) includes a reference generator (314, 414) generating position and velocity references, an observer (306, 406) generating position and velocity estimates, and error circuitry (322, 326, 422, 426) for determining position and velocity errors therefrom. Gain circuitry (330, 332, 334, 336, 338, 340, 430, 432) applies variable position and velocity gains to the position and velocity errors, respectively, the position and velocity gains varying with respect to at least the magnitudes of the position errors.
摘要翻译：公开了通过使用具有可变参数的离散时间滑动模式控制来改善控制系统的振动和机械冲击响应的装置和方法。用于定位磁盘驱动器（100）的磁头（118）的伺服电路（150）包括产生位置和速度参考的参考发生器（314,414），产生位置和速度估计的观测器（306,406）和误差用于确定位置和速度误差的电路（322,326,422,426）。增益电路（330,332,334,336,338,340,430,432）分别对位置和速度误差施加可变位置和速度增益，位置和速度增益分别相对于位置的至少大小变化错误。

7. 发明申请

WO1998042063A1 DC MOTOR ACTUATOR TO CREATE RADIAL FORCE 审中-公开
标题翻译：直流电机执行器创建径向力
公开(公告)号：WO1998042063A1
公开(公告)日：1998-09-24
申请号：PCT/US1997004197
申请日：1997-03-19
申请人： SEAGATE TECHNOLOGY, INC. , HEINE, Gunter, K. , LEUTHOLD, Hans , FLEURY, Christian
发明人： SEAGATE TECHNOLOGY, INC.
IPC分类号： H02K07/00
CPC分类号： H02K7/09 , F16C32/0444 , F16C32/0497 , F16C2370/12 , F16C2380/26 , G11B19/20 , H02K16/00 , H02K29/03
摘要： A polyphase spindle DC motor (figure 1A, 1B) providing a torque (figure 1A) and an additional radial force (F, figure 1B) within the spindle motor utilizing the spindle components (magnets and stator laminations). Interaction between the magnets and currents flowing through conductors create the torque and radial force (F) required for overall stability and efficient operation of the system.
摘要翻译：使用主轴部件（磁体和定子叠片）在主轴电动机内提供扭矩（图1A）和附加径向力（F，图1B）的多相主轴直流电动机（图1A，1B）。磁体和流过导体的电流之间的相互作用产生了系统整体稳定性和有效运行所需的扭矩和径向力（F）。

8. 发明申请

WO1998019828A1 MULTI-POINT BENDING OF BARS DURING FABRICATION OF MAGNETIC RECORDING HEADS 审中-公开
标题翻译：磁性记录头制造过程中棒的多点弯曲
公开(公告)号：WO1998019828A1
公开(公告)日：1998-05-14
申请号：PCT/US1996020088
申请日：1996-12-13
申请人： SEAGATE TECHNOLOGY, INC. , HAO, Shanlin, X.
发明人： SEAGATE TECHNOLOGY, INC.
IPC分类号： B24B49/00
CPC分类号： B24B37/048 , B24B37/00 , B24B49/00
摘要： A device (198) for lapping a bar (10) of the type which carries a plurality of sliders used in magnetic storage systems includes first, second, and third actuators (220, 222, 224) adapted to couple to the bar (10), and impart a first, second, and third controllable force in response to a first, second, and third control signal, respectively. An arm (204) couples to the first, second, and third actuators and applies a lapping force to the bar (10) which presses the bar (10) against a lapping surface (208) thereby causing material to be removed from the bar (10). A controller (262) provides the first, second, and third control signals to the first, second, and third actuators (220, 222, 224), respectively, to impart a plurality of forces onto the bar (10). The actuators (220, 222, 224) are controlled to obtain a desired profile of the bar (10) and to obtain a desired distribution of the lapping force across the profile of the bar (10).
摘要翻译：一种用于研磨载有用于磁存储系统中的多个滑块的类型的杆（10）的装置（198）包括适于联接到杆（10）的第一，第二和第三致动器（220,222,224）并且分别响应于第一，第二和第三控制信号赋予第一，第二和第三可控制力。臂（204）联接到第一，第二和第三致动器，并将研磨力施加到杆（10），杆（10）将杆（10）压靠在研磨表面（208）上，从而使材料从杆 10）。控制器（262）分别向第一，第二和第三致动器（220,222,224）提供第一，第二和第三控制信号，以将多个力施加到杆（10）上。控制致动器（220,222,224）以获得条（10）的所需轮廓并且获得穿过杆（10）的轮廓的研磨力的期望分布。

9. 发明申请

WO1998016922A1 DISC DRIVE SERVO SYSTEM EMPLOYING THERMAL SIGNALS 审中-公开
标题翻译： DISC驱动伺服系统采用热信号
公开(公告)号：WO1998016922A1
公开(公告)日：1998-04-23
申请号：PCT/US1997018325
申请日：1997-10-10
申请人： SEAGATE TECHNOLOGY, INC.
发明人： SEAGATE TECHNOLOGY, INC. , MEYER, Dallas, W. , NAGARAJAN, Subrahmanyan
IPC分类号： G11B05/596
CPC分类号： G11B5/012 , G11B5/5526 , G11B5/59627 , G11B5/59633 , G11B5/59683 , G11B5/82 , G11B2005/0021
摘要： A magnetic disc drive has a magnetoresistive element (26) for reading user data from concentric tracks of a rotatable magnetic recording disc (32). The magnetoresistive element has a resistance based on a magnetic field derived from user data and based on temperature of the magnetoresistive element. Heat generated by the bias current through the head is in part dissipated through the disc, the amount of heat dissipated being representative of disc/head spacing. The surface of the recording disc has contour elements (50, 52, 54) arranged in a pattern representing servo data, the contour elements having a height such that the spacing between the magnetoresistive element and the contour elements is different from the spacing between the magnetoresistive element and a nominal surface of the recording disc. As a result, a modulated signal (66) from the head contains a component representative of user data and a component representative of servo data.
摘要翻译：磁盘驱动器具有用于从可旋转磁记录盘（32）的同心轨道读取用户数据的磁阻元件（26）。磁阻元件具有基于从用户数据导出的磁场和基于磁阻元件的温度的电阻。通过头部的偏置电流产生的热量部分地通过光盘消散，散热量代表光盘/磁头间距。记录盘的表面具有以表示伺服数据的图案布置的轮廓元素（50,52,54），轮廓元件具有使得磁阻元件和轮廓元件之间的间隔不同于磁阻之间的间隔的高度元件和记录盘的标称表面。结果，来自头部的调制信号（66）包含表示用户数据的部件和表示伺服数据的部件。

10. 发明申请

WO1998004032A1 ASYMMETRIC CHANNEL DATA DETECTION COMPENSATION 审中-公开
标题翻译：不对称通道数据检测补偿
公开(公告)号：WO1998004032A1
公开(公告)日：1998-01-29
申请号：PCT/US1997013106
申请日：1997-07-22
申请人： SEAGATE TECHNOLOGY, INC. , FREDRICKSON, Lisa
发明人： SEAGATE TECHNOLOGY, INC.
IPC分类号： H03D01/00
CPC分类号： H03M13/6343 , G11B5/09 , G11B20/10009 , H03M13/3961 , H03M13/41
摘要： A data symbol sequence detector (18-30) for choosing data symbol sequences likely to be represented by corresponding sequences of samples (15-17) received by the detector (18-30) with these sample sequences formed by sampling data signals (15) obtained from magnetically stored data (10) through a data retrieval channel which asymmetrically affects the magnitude values for a selected set of samples (19-20) in the sequence, and a magnitude difference determiner is used for obtaining representations of differences between values of the samples in the sequence and the corresponding estimated expected values. These differences representations can be limited in algebraic form.
摘要翻译：一种数据符号序列检测器（18-30），用于选择可能由由检测器（18-30）接收的这些采样序列的采样数据信号（15）所接收的相应样本序列（15-17）表示的数据符号序列，从磁存储数据（10）通过数据检索通道获得，该数据检索通道不对称地影响序列中所选择的一组采样（19-20）的幅度值，并且使用幅度差确定器来获得序列中的样本和相应的估计预期值。这些差异表示可以以代数形式来限制。

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