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1.发明授权
公开(公告)号：US5894378A
公开(公告)日：1999-04-13
申请号：US977908
申请日：1997-11-25
申请人： Akihiko Aoyagi , Zine-Eddine Boutaghou , Vijayeshwar Das Khanna , Suresh Kumar , Muthuthamby Sri-Jayantha
发明人： Akihiko Aoyagi , Zine-Eddine Boutaghou , Vijayeshwar Das Khanna , Suresh Kumar , Muthuthamby Sri-Jayantha
CPC分类号： G11B19/2009 , F16C19/522 , F16C19/54 , F16C21/00 , F16C39/02 , G11B25/043 , F16C2370/12
摘要： A technique for preventing damage to ball bearings in small form factor devices where the drive motor has at least one piezoelectric crash stop ring disposed about the shaft and inside the rotor of the motor. The crash stop ring must be dimensioned to permit only a small amount of movement of the rotor relative to the shaft. The permitted movement is less than the minimum movement which would cause damage to the elements of the ball bearing.
摘要翻译： 一种用于防止在小型装置中损坏球轴承的技术，其中驱动马达具有至少一个围绕轴设置并且位于马达的转子内部的压电止动环。 防撞圈必须具有尺寸，以便只允许转子相对于轴的少量运动。 允许的运动小于会损坏球轴承元件的最小运动。
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2.发明授权
公开(公告)号：US5550688A
公开(公告)日：1996-08-27
申请号：US450645
申请日：1995-05-25
申请人： Akihiko Aoyagi , Zine-Eddine Boutaghou , Vijayeshwar D. Khanna , Suresh Kumar , Muthuthamby Sri-Jayantha
发明人： Akihiko Aoyagi , Zine-Eddine Boutaghou , Vijayeshwar D. Khanna , Suresh Kumar , Muthuthamby Sri-Jayantha
CPC分类号： G11B19/2009 , F16C19/522 , F16C19/54 , F16C21/00 , F16C39/02 , G11B25/043 , F16C2370/12
摘要： A technique for preventing damage to ball bearings in a small form factor device where the drive motor has at least one crash stop ring disposed about the shaft and inside the rotor of the motor. The crash stop ring is dimensioned to permit only a small amount of movement of the rotor relative to the shaft. The permitted movement must be less than the minimum movement which would cause damage to the elements of the ball bearing. In an alternative embodiment, a rotor includes a flange extending in the radial direction from the rotor. A piezoelectric ring is rigidly mounted on both sides of the flange to engage one of the planar surfaces of the flange when the piezoelectric ring is in the relaxed state. With two such crash stop rings disposed so that the rings can engage both planar surfaces of the flange, the rotor is effectively clamped between the two piezoelectric crash stop rings whenever the piezoelectric crash stop ting is disconnected from the power source used to contract the piezoelectric material in a direction parallel to the axis of rotation of the rotor.
摘要翻译： 一种用于防止在小型装置中损坏球轴承的技术，其中驱动马达具有围绕轴设置并且位于马达转子内部的至少一个止动环。 防撞环的尺寸设计为仅允许转子相对于轴的少量运动。 允许的运动必须小于会损坏球轴承元件的最小运动。 在替代实施例中，转子包括从转子沿径向方向延伸的凸缘。 当压电环处于松弛状态时，压电环刚性地安装在凸缘的两侧上，以接合凸缘的一个平面。 通过设置两个这样的碰撞止动环，使得环可以接合凸缘的两个平面表面，只要压电碰撞停止与用于收缩压电材料的电源断开，则有效地将转子夹在两个压电紧急停止环之间 在平行于转子的旋转轴线的方向上。
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3.发明授权
公开(公告)号：US5761006A
公开(公告)日：1998-06-02
申请号：US764772
申请日：1996-12-12
CPC分类号： G11B21/08 , F16C21/00 , G11B21/083 , G11B5/5521 , G11B5/5552 , F16C2370/12 , G11B5/5582
摘要： In a direct access storage device having a head for interaction with a storage medium and a moving actuator on which the head is mounted, the improvement comprises a compound bearing system for the actuator, the bearing system including a first bearing of low friction for small movements of the actuator; and a second bearing of higher friction for coarse movements of the actuator. The storage medium is preferably a rotating magnetic disk having a series of concentric circular tracks. A single servo system drives the actuator so that the head follows a selected track with motion of the first bearing, and movement of the head to a new track causes motion of the second bearing. Preferably the first bearing is a flex bearing and the second bearing is a ball bearing.
摘要翻译： 在具有用于与存储介质相互作用的头部和安装有头部的移动致动器的直接存取存储装置中，改进包括用于致动器的复合轴承系统，该轴承系统包括用于小运动的低摩擦力的第一轴承 的执行器; 以及用于致动器的粗略运动的较高摩擦力的第二轴承。 存储介质优选地是具有一系列同心圆形轨道的旋转磁盘。 单个伺服系统驱动致动器，使得头部沿着第一轴承的运动跟随选定的轨道，并且头部移动到新的轨道导致第二轴承的运动。 优选地，第一轴承是挠性轴承，第二轴承是球轴承。
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公开(公告)号：US6163440A
公开(公告)日：2000-12-19
申请号：US69033
申请日：1998-04-27
申请人： Kohji Takahashi , Keishi Takahashi , Vijayeshwar D. Khanna , Thomas R. Albrecht , Suresh Kumar , Muthuthamby Sri-Jayantha
发明人： Kohji Takahashi , Keishi Takahashi , Vijayeshwar D. Khanna , Thomas R. Albrecht , Suresh Kumar , Muthuthamby Sri-Jayantha
摘要： The present invention relates to an inertial latch mechanism of an actuator of a thin disk drive device. An inertial latch mechanism comprises a latch lever rotatable on a pivot from a release position to a latch position, and an inertial lever which is rotatable on a pivot and has a moment of inertia larger than that of the latch lever. The inertial lever rotates counterclockwise when a counterclockwise shock is given to the actuator, and pulls the latch lever at a first latch part by a first latch projection to move the latch lever to the latch position. The inertial lever also rotates clockwise when a clockwise shock is given to the actuator, and pushes the latch lever at a second latch part by a second latch projection to latch the actuator which has bumped against a crash stop and is reversely rotating.
摘要翻译： 本发明涉及一种薄盘驱动装置的致动器的惯性锁定机构。 惯性闭锁机构包括一个可在从释放位置到锁定位置的枢轴上旋转的闩杆，以及可在枢轴上旋转并具有大于闩锁杆惯性矩的惯性杆。 当向致动器施加逆时针冲击时，惯性杆逆时针旋转，并且通过第一闩锁突起将闩锁杆拉到第一闩锁部分，以将闩锁杆移动到闩锁位置。 当向致动器施加顺时针冲击时，惯性杆也顺时针旋转，并且通过第二闩锁突起将闩锁杆推动在第二闩锁部分处，以将致动器闩锁以抵抗碰撞停止并反向旋转。
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公开(公告)号：US5640290A
公开(公告)日：1997-06-17
申请号：US531494
申请日：1995-09-21
申请人： Vijayeshwar Khanna , Ichiroh Koyanagi , Suresh Kumar , Hiroshi Matsuda , Muthuthamby Sri-Jayantha
发明人： Vijayeshwar Khanna , Ichiroh Koyanagi , Suresh Kumar , Hiroshi Matsuda , Muthuthamby Sri-Jayantha
摘要： When an HDD is subjected to shock with a magnetic head (22) retracted to the parking zone, a suspension (34) having a magnetic head (36) at the free end thereof swings. When a lowest suspension (34) swings, the free end of the suspension (34) is brought into contact with a pin projection (50) and further displacement toward the base (12) is impeded. The suspension (34) that further swings in this condition presents not a swing in a primary mode (cantilever support mode) but a swing in a secondary mode (two-point support mode), and the maximum displacement of the suspension (34) occurs at the longitudinal intermediate portion of the suspension (34). The intermediate portion that is displaced is made to go into a groove (48), and the contact of the intermediate portion of the suspension (34) with the base (12) is impeded by the groove (48).
摘要翻译： 当HDD被收回到停车区的磁头（22）受到冲击时，在其自由端处具有磁头（36）的悬架（34）摆动。 当最低的悬架（34）摆动时，悬架（34）的自由端与销突起（50）接触，并且朝向基座（12）的进一步的位移被阻碍。 在这种情况下进一步摆动的悬架（34）在初级模式（悬臂支撑模式）中不摆动，而是在二次模式（两点支撑模式）下摆动，并且发生悬架（34）的最大位移 在悬架（34）的纵向中间部分处。 使位移的中间部分进入凹槽（48），并且悬架（34）的中间部分与基部（12）的接触被凹槽（48）阻挡。
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6.发明授权
公开(公告)号：US5608586A
公开(公告)日：1997-03-04
申请号：US327168
申请日：1994-10-21
CPC分类号： G11B5/5547 , G11B5/59627
摘要： A method and apparatus, in a direct access storage device including a head positioned for interaction with a data storage medium mounted on a rotating spindle, an actuator for positioning the head, and a servo control loop for positioning the actuator. The improvement comprises: a narrow band gain enhancing filter for connection in the servo control loop. The filter has a response frequency related to the rotational frequency of the spindle. The filter has programmable initial states. Also provided is a switch for switching in the narrow band filter as the head approaches a target position on the data storage medium. Initial states of the filter are determined and supplied to program the filter. At least one additional filter having a peak response frequency at a harmonic of the frequency of rotation of the spindle, may be provided. Initial states of the additional filters are determined and supplied to program the additional filter. The filter may include successive delay circuits for inputs to the filter, which circuits provide delayed outputs; multipliers for multiplying selected delayed outputs by a constant; and a summer for summing the delay outputs after the delayed outputs are multiplied by the multipliers. The initial states may be stored as phase, frequency and amplitude of a sine function.
摘要翻译： 一种直接存取存储装置中的方法和装置，包括：定位用于与安装在旋转主轴上的数据存储介质相互作用的头部，用于定位头部的致动器，以及用于定位致动器的伺服控制回路。 改进包括：用于在伺服控制回路中连接的窄带增益增强滤波器。 滤波器具有与主轴转速相关的响应频率。 滤波器具有可编程的初始状态。 还提供了当头部接近数据存储介质上的目标位置时用于切换窄带滤波器的开关。 滤波器的初始状态被确定并提供给编程滤波器。 可以提供至少一个具有在主轴的旋转频率的谐波处的峰值响应频率的附加滤波器。 确定并提供附加过滤器的初始状态以编程附加过滤器。 滤波器可以包括用于输入到滤波器的连续延迟电路，这些电路提供延迟的输出; 用于将选定的延迟输出乘以常数的乘法器; 以及用于将延迟输出乘以乘法器之后的延迟输出相加的加法器。 初始状态可以存储为正弦函数的相位，频率和幅度。
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公开(公告)号：US5270880A
公开(公告)日：1993-12-14
申请号：US866687
申请日：1992-04-10
摘要： A method for predicting and avoiding data errors by predicting disk drive read-write inhibit requirements in response to at least two parameters including a head position error and velocity with respect to the track centerline. A write or read inhibit signal is generated in response to selected combinations of these parameters to minimize soft read errors arising from track misregistration and to avoid hard errors arising from overwriting data recorded in an adjacent track. The read and write inhibit strategy is described as a pair of linguistic control rules suitable for implementation in a Fuzzy Logic Controller.
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公开(公告)号：US5267110A
公开(公告)日：1993-11-30
申请号：US672161
申请日：1991-03-19
CPC分类号： G11B5/5521
摘要： A rotary actuator head driver for a direct access storage device includes a transducer head moving in a radial direction across a disk surface for reading and/or writing data on a plurality of tracks for storing data. A support arm supports the transducer head relative to the disk surface. The support arm is connected to a pivot defining an axis of rotation spaced from the transducer head. A head driver positions the transducer head over one track in a track following mode or moves the transducer head from one track to another track in a seek mode. The head driver generates oppositely directed forces to produce a net torque applied to the support arm through the pivot. The oppositely directed forces have a line of action orthogonal a dominant motion of the transducer head. As a result, any parasitic force is orthogonal to the dominant motion and does not contribute to track misregistration errors. When the oppositely directed forces have an equal magnitude for force cancellation, the effect parasitic forces are eliminated. The head driver includes a pair of miniature voice coil motors or an in-the-hub motor.
摘要翻译： 用于直接存取存储装置的旋转执行机构头驱动器包括一个换能器头沿径向方向跨越盘表面移动，用于在用于存储数据的多个轨道上读取和/或写入数据。 支撑臂相对于盘表面支撑换能器头。 支撑臂连接到限定与换能器头部间隔开的旋转轴线的枢轴。 头驱动器将传感器头定位在跟踪模式下的一个轨道上，或者以寻道模式将换能器头从一个轨道移动到另一个轨道。 头部驱动器产生相反方向的力，以产生通过枢轴施加到支撑臂的净扭矩。 相反方向的力具有与换能器头的主要运动正交的作用线。 结果，任何寄生力与主要运动正交，并且不会导致跟踪错位。 当相反方向的力具有相等的力消除大小时，消除了影响寄生力。 头驱动器包括一对微型音圈电机或内嵌式电机。
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9.发明授权
公开(公告)号：US6097565A
公开(公告)日：2000-08-01
申请号：US594572
申请日：1996-01-31
CPC分类号： G11B5/59627
摘要： In a direct access storage device including a rotating disk, a head positioned for interaction with said disk, an actuator for carrying said head and a servo system for operating said actuator so as to follow a substantially circular track on said disk by responding to a position error signal, a method for reducing response of the servo system to radial runout of the circular tracks, comprising the steps of obtaining radial runout data; filtering the data; storing the filtered data; subtracting the filtered data from the position error signal to obtain a corrected position error signal; and using the corrected position error signal to control the servo system. A direct access storage device in accordance with the invention includes means for obtaining radial runout data; means for filtering the data; means for storing the filtered data; means for subtracting the filtered data from the position error signal to obtain a corrected position error signal; and means for controlling the servo system using the corrected position error signal.
摘要翻译： 在包括旋转盘的直接存取存储装置中，用于与所述盘相互作用的头部，用于承载所述头部的致动器和用于操作所述致动器的伺服系统，以便通过响应于位置 误差信号，用于减小伺服系统对圆形轨道的径向跳动的响应的方法，包括以下步骤：获得径向跳动数据; 过滤数据; 存储经过滤的数据; 从位置误差信号中减去滤波后的数据，得到校正后的位置误差信号; 并使用校正的位置误差信号来控制伺服系统。 根据本发明的直接存取存储装置包括用于获得径向跳动数据的装置; 用于过滤数据的手段; 用于存储经过滤数据的装置; 用于从所述位置误差信号中减去所述滤波数据以获得校正的位置误差信号的装置; 以及用于使用校正的位置误差信号来控制伺服系统的装置。
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10.发明授权Method and apparatus for writing servo tracks of a magnetic disk unit which uses a probe to control the positioning of the head 失效用于写入使用探头来控制头部定位的磁盘单元的伺服磁道的方法和装置
公开(公告)号：US5610777A
公开(公告)日：1997-03-11
申请号：US608206
申请日：1996-02-28
申请人： Hien P. Dang , Takahiro Nakagawa , Yoshiyasu Nakamoto , Muthuthamby Sri-Jayantha , Hiroyuki Suzuki
发明人： Hien P. Dang , Takahiro Nakagawa , Yoshiyasu Nakamoto , Muthuthamby Sri-Jayantha , Hiroyuki Suzuki
CPC分类号： G11B5/59633
摘要： The present invention relates to a method and apparatus for writing servo tracks of a magnetic disk unit, and has an object of providing a servo track writing method and apparatus which can reduce a mechanical vibration of a head in the steady state and can shorten a settling time of the system. A detecting face is set in the vicinity of a head arm end portion 22 of a magnetic disk unit 2, and a capacitance probe 28 is provided as a gap detecting means for detecting a gap in a head moving direction between the detecting face and the head arm end portion 22. Further provided are a rotary positioner 26 as a positioning means for moving the capacitance probe 28 in the head moving direction to position it at a target position, and a head drive system control means for moving a head 14 of the magnetic disk unit 2 so that the gap is kept constant, to position the head 14 at a predetermined servo track writing position.
摘要翻译： 本发明涉及一种用于写入磁盘单元的伺服磁道的方法和装置，其目的在于提供一种伺服磁道写入方法和装置，其能够降低磁头在稳定状态下的机械振动并且可以缩短沉降 系统的时间。 将检测面设置在磁盘单元2的头臂端部22附近，并且设置电容探针28作为间隙检测装置，用于检测检测面和头部之间的头移动方向上的间隙 还设置有作为定位装置的旋转定位器26，该定位装置用于使磁头移动方向移动电容探针28以将其定位在目标位置;以及磁头驱动系统控制装置，用于移动磁头14的磁头14 磁盘单元2使得间隙保持恒定，以将磁头14定位在预定的伺服磁道写入位置。
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