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1. 发明授权

US08077426B2 Magnetic disk centering method and system 有权
标题翻译：磁盘定心方法及系统
公开(公告)号：US08077426B2
公开(公告)日：2011-12-13
申请号：US12638545
申请日：2009-12-15
申请人： Nahum Guzik , Sergey Korepanov , Alexander Varlakhanov
发明人： Nahum Guzik , Sergey Korepanov , Alexander Varlakhanov
IPC分类号： G11B21/02 , G11B5/58
CPC分类号： G11B5/00
摘要： A system and method are described for aligning a data axis of one or more circular data-bearing tracks on an annular surface region of a magnetic media-bearing disk, with a spin axis of a spindle of a spinstand or a disk drive. The data axis is perpendicular to the surface region of the disk and the data tracks are concentric with respect to a data axis.
摘要翻译：描述了一种系统和方法，用于将磁性介质承载盘的环形表面区域上的一个或多个圆形数据承载轨道的数据轴与纺锤台或磁盘驱动器的主轴的旋转轴线对准。数据轴垂直于盘的表面区域，数据轨迹相对于数据轴是同心的。

2. 发明申请

US20110141608A1 MAGNETIC DISK CENTERING METHOD AND SYSTEM 有权
标题翻译：磁盘中心方法与系统
公开(公告)号：US20110141608A1
公开(公告)日：2011-06-16
申请号：US12638545
申请日：2009-12-15
申请人： Nahum Guzik , Sergey Korepanov , Alexander Varlakhanov
发明人： Nahum Guzik , Sergey Korepanov , Alexander Varlakhanov
IPC分类号： G11B21/02
CPC分类号： G11B5/00
摘要： A system and method are described for aligning a data axis of one or more circular data-bearing tracks on an annular surface region of a magnetic media-bearing disk, with a spin axis of a spindle of a spinstand or a disk drive. The data axis is perpendicular to the surface region of the disk and the data tracks are concentric with respect to a data axis.
摘要翻译：描述了一种系统和方法，用于将磁性介质承载盘的环形表面区域上的一个或多个圆形数据承载轨道的数据轴与纺锤台或磁盘驱动器的主轴的旋转轴线对准。数据轴垂直于盘的表面区域，数据轨迹相对于数据轴是同心的。

3. 发明授权

US6023145A Head and disk tester with a thermal drift-compensated closed-loop positioning system 有权
标题翻译：具有热漂移补偿闭环定位系统的头盘测试仪
公开(公告)号：US6023145A
公开(公告)日：2000-02-08
申请号：US295912
申请日：1999-04-21
申请人： Ufuk Karaaslan , Ilia Bokchtein , Anatoli Stein , Nahum Guzik , Alexander Varlakhanov
发明人： Ufuk Karaaslan , Ilia Bokchtein , Anatoli Stein , Nahum Guzik , Alexander Varlakhanov
IPC分类号： G11B21/08 , G11B5/455 , G11B5/55 , G11B5/596 , G11B21/10 , G11B5/58
CPC分类号： G11B5/455 , G11B5/5552 , G11B5/5565 , G11B5/596
摘要： The head/disk tester of the invention has a housing 43 that houses spindle 44 that rotatingly supports a magnetic disk 31. The housing supports a moveable carriage 30 that, in turn, supports a magnetic head 32. Positioning means 39 and 41 are used to move the carriage and the magnetic head across the magnetic disk. These positioning means include stepper motors that realize coarse positioning of the magnetic head, and a piezo actuator 37 that is used for fine positioning. Linear encoders 40 and 42 located at both sides of the carriage provide feedback information to a closed-loop positioning system that controls the piezo actuator. A set of special signals ("servo bursts") pre-written at a given track of the magnetic disk is used as an additional source of feedback information for the same closed-loop positioning system. This positioning system includes a servo analyzer 45 that reads and processes servo burst signals from the magnetic disk, and a position controller 49 that controls the piezo actuator. The controller contains two control loops: a proportional-integral-derivative (PID) loop and an additional servo burst loop. During any movement of the magnetic head to a prescribed command position, the servo burst feedback is turned off, and feedback from linear encoders is used by the PID loop to move the head. When the magnetic head reaches the prescribed command position, servo burst loop is turned on; it changes the command position of the PID loop in a way to keep the ratio of pre-written burst signals constant. As a result, the position of the magnetic head with respect to the data track remains the same for as long as necessary, even in unstable temperature conditions.
摘要翻译：本发明的头/盘测试器具有壳体43，其容纳旋转地支撑磁盘31的心轴44.壳体支撑可移动滑架30，滑动架30又支撑磁头32.定位装置39和41用于将滑架和磁头移动到磁盘上。这些定位装置包括实现磁头粗略定位的步进马达和用于精细定位的压电致动器37。位于滑架两侧的线性编码器40和42向控制压电致动器的闭环定位系统提供反馈信息。预先写在磁盘的给定轨道上的一组特殊信号（“伺服脉冲串”）用作相同闭环定位系统的附加反馈信息源。该定位系统包括从磁盘读取和处理伺服脉冲串信号的伺服分析器45以及控制压电致动器的位置控制器49。控制器包含两个控制回路：比例积分微分（PID）回路和附加的伺服脉冲串回路。在任何磁头移动到规定的指令位置时，伺服脉冲串反馈被关闭，PID回路使用线性编码器的反馈来移动磁头。当磁头达到规定的指令位置时，伺服脉冲串环路导通; 它以保持预写脉冲串信号的比例恒定的方式改变PID循环的命令位置。结果，即使在不稳定的温度条件下，磁头相对于数据轨道的位置也保持相同。

4. 发明授权

US07532006B2 Stand-alone quasi-static tester 有权
标题翻译：独立准静态测试仪
公开(公告)号：US07532006B2
公开(公告)日：2009-05-12
申请号：US11881815
申请日：2007-07-27
申请人： Nahum Guzik , Adrian Hodgkinson , Forest Ray
发明人： Nahum Guzik , Adrian Hodgkinson , Forest Ray
IPC分类号： G01R33/12
CPC分类号： G11B5/455
摘要： A quasi-static tester is disclosed. The quasi static tester comprises: a mount configured to fix a head gimbal assembly in a given position; a camera configured to observe the head gimbal assembly when the head gimbal assembly is fixed in the mount, wherein the camera is used to position the head gimbal assembly in an observation position; and a magnet for performing quasi-static testing of the head gimbal assembly when the head gimbal assembly is fixed in the mount, wherein the observation position and a testing position in a uniform area of the magnet are a predetermined distance apart.
摘要翻译：公开了一种准静态测试仪。准静态测试器包括：安装件，其被配置成将头部万向架组件固定在给定位置; 配置为当头部万向节组件固定在安装座中时观察头部万向节组件的相机，其中相机用于将头部万向架组件定位在观察位置; 以及用于当头部万向节组件固定在安装座中时对磁头万向架组件进行准静态测试的磁体，其中观察位置和磁体均匀区域中的测试位置间隔预定距离。

5. 发明授权

US07295002B2 Vacuum chuck spinstand for testing magnetic heads and disks 有权
公开(公告)号：US07295002B2
公开(公告)日：2007-11-13
申请号：US11333080
申请日：2006-01-17
申请人： Nahum Guzik , Forest E. Ray , Charles Brice Arnold
发明人： Nahum Guzik , Forest E. Ray , Charles Brice Arnold
IPC分类号： G01R33/12
CPC分类号： G11B5/012 , G11B5/455 , G11B5/4555 , G11B17/038 , G11B2005/001
摘要： A spinstand having a vacuum chuck clamping mechanism for securing magnetic discs includes a cap (9) and a base (10). A disk-to-be-clamped is held between the cap (9) and the base (10). Vacuum, applied through a port (4) in a mounting screw (12) of the base, provides the clamping force. The vacuum is held constant using a circumferential seal (27) on a piston (2) of the cap, which extends into a cylindrical countering bushing (3) extending from the base. In one form, the cap (9) is centered about a spin axis (SA) extending through the base (10), using a hardened pin (1) extending from the cap and a locating bushing (19) affixed to the base. When the cap (9) is inserted into the base (10), the pin (1) prevents a piston (2) in the cap from contacting the inside walls/sealing surface (11) of the centering bushing (3) of the base. To remove the cap, positive air pressure is applied to the air passage (4), collapsing the seal (27), and forcing the cap (9) out of the base (10) without causing wear on the seal (27) or the sealing surface (11) of the centering bushing (3).

6. 发明授权

US06236201B1 Magnetic head and disk tester with pitch correction 有权
标题翻译：带磁头校正的磁头和磁盘测试仪
公开(公告)号：US06236201B1
公开(公告)日：2001-05-22
申请号：US09241512
申请日：1999-02-01
申请人： Cem Kilicci , Nahum Guzik , Ufuk Karaaslan
发明人： Cem Kilicci , Nahum Guzik , Ufuk Karaaslan
IPC分类号： G01R3312
CPC分类号： G11B5/56 , G11B5/455 , G11B5/4806 , G11B5/5552
摘要： A magnetic head and disk tester provides accurate positioning of a magnetic read-write head over a magnetic disk by means of a coarse positioning mechanism and a fine positioning mechanism. The coarse positioning mechanism includes a stepper motor, a lead screw, a nut, rear sliders and a housing. The fine positioning mechanism includes a piezoelectric actuator, slides and a carriage. The positioning displacements are along a linear axis, which lies on a horizontal plane. The carriage is connected to the housing via the fine positioning mechanism, which then moves the carriage with respect to the housing. Two pairs of linear encoders are mounted on the carriage about the axis and measure the position of the magnetic read-write head with respect to the magnetic disk. Each pair is mounted such that the pairs lie in separate horizontal planes. One linear encoder on each pair is mounted to the right of the magnetic read-write head and the other to the left of it, the magnetic read-write head being equal distances from the two linear encoders of each pair. The magnetic read-write head is mounted on the carriage with an offset from each pair of linear encoders in the vertical direction. Pitch during the fine positioning movement causes the head to move a different amount than that measured by any one of the pairs of linear encoders. By using both pairs of encoders, the amount of pitch is determined. A feedback circuit responsive to that determination causes the fine positioned to move the head to the correct pitch.
摘要翻译：磁头和磁盘测试仪通过粗略定位机构和精细定位机构在磁盘上精确定位磁读写头。粗定位机构包括步进电机，导螺杆，螺母，后滑块和壳体。精细定位机构包括压电致动器，滑块和托架。定位位移沿线性轴线位于水平面上。滑架通过精细定位机构连接到壳体，然后精细定位机构使托架相对于壳体移动。两对线性编码器围绕轴安装在托架上，并测量磁读写头相对于磁盘的位置。每对安装成使得这些对位于分开的水平平面中。每对上的一个线性编码器安装在磁读写头的右侧，另一个安装在其左侧，磁读写头与每对两个线性编码器的距离相等。磁读写头安装在滑架上，在每一对线性编码器上沿垂直方向偏移。在精细定位运动期间的间距导致头部移动与由任何一对线性编码器测量的量不同的量。通过使用两对编码器，确定音高量。响应于该确定的反馈电路使精细定位将头移动到正确的音调。

7. 发明授权

US5491413A Positioning device for magnetic head and disk tester with rotating tool support 失效
标题翻译：带旋转刀具支架的磁头和磁盘测试仪的定位装置
公开(公告)号：US5491413A
公开(公告)日：1996-02-13
申请号：US127684
申请日：1993-09-27
申请人： Nahum Guzik
发明人： Nahum Guzik
IPC分类号： G11B5/00 , G11B5/455 , G11B5/55 , G01R33/12 , G11B5/54 , G11B21/14
CPC分类号： G11B5/5521 , G11B2005/001 , G11B5/455
摘要： A positioning device for magnetic head and disk tester comprises a base plate (100) which supports a rotary spindle (170), for rotating a magnetic disk (168) with a medium to be tested or to be used for testing, and a rotary platform (150) which may slide in one direction (A) along guide shafts (106 and 108) attached to the base plate (100). The rotary platform rotatingly supports a tool support (208) which supports a mechanical arm (218). The latter supports a pair of head holders (220 and 222) with respective read-write heads (228 and 222) to be tested or to be used for testing the disk. The positioning device of this type makes it possible to replace the heads in a convenient position unobstructed by other parts. This is achieved by unlocking the tool support (208) from the rotatable platform (150) by pushing down a lock finger (234) and turning the tool support with the head away from the working position.
摘要翻译：一种用于磁头和磁盘测试仪的定位装置，包括支撑旋转心轴（170）的基板（100），用于使待测试介质或用于测试的介质旋转磁盘（168），以及旋转平台（150），其可以沿着附接到所述基板（100）的引导轴（106和108）沿一个方向（A）滑动。旋转平台旋转地支撑支撑机械臂（218）的工具支撑（208）。后者支持一对具有相应读写头（228和222）的头部保持器（220和222），以被测试或用于测试盘。这种定位装置可以在不受其它部件阻碍的方便位置更换头部。这是通过向下推动锁定手指（234）并使头部工具支撑件远离工作位置而从可旋转平台（150）解锁工具支撑件（208）来实现的。

8. 发明授权

US07705609B2 Phase frequency distortion measurement system 有权
标题翻译：相位失真测量系统
公开(公告)号：US07705609B2
公开(公告)日：2010-04-27
申请号：US11944086
申请日：2007-11-21
申请人： Nahum Guzik , Vladislav Klimov , Semen Volfbeyn
发明人： Nahum Guzik , Vladislav Klimov , Semen Volfbeyn
IPC分类号： G01R23/20
CPC分类号： G01R35/00 , G01R23/16 , G01R23/20 , G01R31/2837
摘要： Disclosed is a method of measuring frequency distortions characteristics of a device under test, the device configured convert an input signal in an input frequency range to an output signal in a different output frequency range. The method includes, for each test frequency fi, where i=1, . . . , N and N a positive integer, in a selected frequency range, providing a corresponding test signal with multiple frequency components having a measurement component with a frequency fi, a first reference component with a frequency fA, and a second reference component with a frequency fB; inputting the test signals into the device under test; measuring output test signals at the output of the device under test corresponding to the input test signals; and determining, for each test frequency fi, information representative of frequency distortions based on the corresponding input test signal and the corresponding output test signal.
摘要翻译：公开了一种测量被测设备的频率失真特性的方法，该装置将输入频率范围内的输入信号转换为不同输出频率范围内的输出信号。该方法包括对于每个测试频率fi，其中i = 1。。。，N和N为正整数，在选定的频率范围内，提供具有多个频率分量的对应测试信号，所述多个频率分量具有具有频率fi的测量分量，具有频率fA的第一参考分量和具有频率fB的第二参考分量 ; 将测试信号输入被测设备; 根据输入的测试信号测量被测器件输出端的输出测试信号; 并且针对每个测试频率fi，基于相应的输入测试信号和相应的输出测试信号来确定表示频率失真的信息。

9. 发明申请

US20090128164A1 PHASE FREQUENCY DISTORTION MEASUREMENT SYSTEM 有权
标题翻译：相位失真测量系统
公开(公告)号：US20090128164A1
公开(公告)日：2009-05-21
申请号：US11944086
申请日：2007-11-21
申请人： Nahum Guzik , Vladislav Klimov , Semen Volfbeyn
发明人： Nahum Guzik , Vladislav Klimov , Semen Volfbeyn
IPC分类号： G01R23/20
CPC分类号： G01R35/00 , G01R23/16 , G01R23/20 , G01R31/2837
摘要： Disclosed is a method of measuring frequency distortions characteristics of a device under test, said device configured convert an input signal in an input frequency range to an output signal in a different output frequency range. The method includes, for each test frequency fi, where i=1, . . . ,N and N a positive integer, in a selected frequency range, providing a corresponding test signal with multiple frequency components comprising a measurement component with a frequency fi, a first reference component with a frequency fA, and a second reference component with a frequency fB; inputting said test signals into the device under test; measuring output test signals at the output of the device under test corresponding to the input test signals; and determining, for each test frequency fi, information representative of frequency distortions based on the corresponding input test signal and the corresponding output test signal.
摘要翻译：公开了一种测量被测设备的频率失真特性的方法，所述设备将输入频率范围内的输入信号转换为不同输出频率范围内的输出信号。该方法包括对于每个测试频率fi，其中i = 1。。。，N和N为正整数，在选定的频率范围内，提供具有多个频率分量的相应测试信号，所述多个频率分量包括具有频率fi的测量分量，具有频率fA的第一参考分量和具有频率fB的第二参考分量 ; 将所述测试信号输入被测设备; 根据输入的测试信号测量被测器件输出端的输出测试信号; 并且针对每个测试频率fi，基于相应的输入测试信号和相应的输出测试信号来确定表示频率失真的信息。

10. 发明申请

US20080247091A1 Stand-alone quasi-static tester 有权
标题翻译：独立准静态测试仪
公开(公告)号：US20080247091A1
公开(公告)日：2008-10-09
申请号：US11881815
申请日：2007-07-27
申请人： Nahum Guzik , Adrian Hodgkinson , Forest Ray
发明人： Nahum Guzik , Adrian Hodgkinson , Forest Ray
IPC分类号： G11B21/16 , G11B5/48
CPC分类号： G11B5/455
摘要： A quasi-static tester is disclosed. The quasi static tester comprises: a mount configured to fix a head gimbal assembly in a given position; a camera configured to observe the head gimbal assembly when the head gimbal assembly is fixed in the mount, wherein the camera is used to position the head gimbal assembly in an observation position; and a magnet for performing quasi-static testing of the head gimbal assembly when the head gimbal assembly is fixed in the mount, wherein the observation position and a testing position in a uniform area of the magnet are a predetermined distance apart.
摘要翻译：公开了一种准静态测试仪。准静态测试器包括：安装件，其被配置成将头部万向架组件固定在给定位置; 配置为当头部万向节组件固定在安装座中时观察头部万向节组件的相机，其中相机用于将头部万向架组件定位在观察位置; 以及用于当头部万向节组件固定在安装座中时对磁头万向架组件进行准静态测试的磁体，其中观察位置和磁体均匀区域中的测试位置间隔预定距离。

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