公开(公告)号：US06741417B2

公开(公告)日：2004-05-25

申请号：US09827821

申请日：2001-04-06

申请人： Yi-Ping Hsin ,  John C. Morris

发明人： Yi-Ping Hsin ,  John C. Morris

IPC分类号： G11B5596

CPC分类号： G11B5/5552

摘要： A method and system for providing plant variation compensation for a microactuator in a dual-stage servomechanism of a disc drive. The method includes performing indirect adaptive filtering to identify plant variation in the microactuator, and tuning a compensator for the microactuator based on the plant variation. The indirect adaptive filtering can be performed using a two-stage process, including a first stage of adaptive modeling for the dual-stage servomechanism and a second stage of generating an indirect mode-reference inverse for the microactuator. A combined process can alternatively be employed. The microactuator can be a piezoelectric microactuator which forms a PZT system. The dual-stage servomechanism also includes a coarse actuator such as a voice coil motor.

摘要翻译： 一种用于在盘驱动器的双级伺服机构中为微致动器提供植物变异补偿的方法和系统。 该方法包括执行间接自适应滤波以识别微致动器中的植物变化，以及基于植物变化调整微致动器的补偿器。 间接自适应滤波可以使用两阶段过程进行，包括用于双级伺服机构的自适应建模的第一阶段和为微型致动器产生间接模式参考反向的第二阶段。 也可以采用组合方法。 微致动器可以是形成PZT系统的压电微致动器。 双级伺服机构还包括诸如音圈电机之类的粗致动器。

公开(公告)号：US06580579B1

公开(公告)日：2003-06-17

申请号：US09621163

申请日：2000-07-21

申请人： Yi-Ping Hsin ,  John C. Morris ,  Dustin M. Cvancara

发明人： Yi-Ping Hsin ,  John C. Morris ,  Dustin M. Cvancara

IPC分类号： G11B5596

CPC分类号： G11B5/59627 ,  G11B5/5582

摘要： A system and method for attenuating the effect of rotational vibration on the positioning of the read/write head in a disc drive. The rotational acceleration of the disc drive body is sensed and applied to an adaptive filter that produces a feedforward signal designed to offset the effects of the rotational vibration. The adaptive filter adjusts its parameters based on the rotational acceleration signal, the position error signal of the servo system, and a transfer function relating the actual position signal to the feedforward signal. The plant estimate of the transfer function relating the actual position signal to the feedforward signal is determined off-line and stored for use by the adaptive filter in adjusting its parameters during operation.

摘要翻译： 一种用于衰减旋转振动对读/写头在盘驱动器中的定位的影响的系统和方法。 磁盘驱动器体的旋转加速度被感测并施加到自适应滤波器，该自适应滤波器产生被设计为抵消旋转振动的影响的前馈信号。 自适应滤波器基于旋转加速度信号，伺服系统的位置误差信号和与实际位置信号与前馈信号相关联的传递函数来调整其参数。 关于实际位置信号与前馈信号的传递函数的工厂估计被离线地确定并存储供自适应滤波器在操作期间调节其参数。

公开(公告)号：US06560059B1

公开(公告)日：2003-05-06

申请号：US09544653

申请日：2000-04-05

申请人： Yi-Ping Hsin ,  John C. Morris

发明人： Yi-Ping Hsin ,  John C. Morris

IPC分类号： G11B5596

CPC分类号： G11B5/556

摘要： Apparatus suppresses seek-induced vibration in a disc drive. The apparatus is responsive to a selected bang-bang command to provide an operating signal to the actuator, such as a voice coil motor, representing the selected bang-bang command with damped amplitudes of dominant vibration mode frequencies of the selected bang-bang command. One example of the apparatus is a finite impulse response filter having a discrete transfer function of C(1+al1z−l+al2z−l·2+ . . . +alrz−l·r), where C is a constant, al1, al2, . . . alr represent impulse amplitudes at spaced positions within a sample period and z−l·1, z−l·2, . . . z−l·r represent delay components at the respective spaced positions. In a preferred embodiment, the finite impulse response filter employs a pole-zero cancellation technique to damp amplitudes of selected frequencies. The discrete transfer function is derived based on a conjugate pair of poles in an s-domain for each of a plurality of vibration frequencies of s i = - ζ i ⁢ ω ni + jω ni ⁢ 1 - ζ i 2 ⁢   ⁢ and s i * = - ζ i ⁢ ω ni - jω n ⁢ i ⁢ 1 - ζ i 2 where &zgr;i is the damping ratio and &ohgr;ni is the natural frequency for the i-th mode.

摘要翻译： 装置抑制磁盘驱动器中的寻道引起的振动。 该装置响应于所选择的爆炸命令，以向诸如音圈电机的致动器提供操作信号，该致动器代表所选择的爆炸命令的主要振动模式频率的阻尼幅度。 该装置的一个实例是具有C（1 + al1z-1 + al2z-l2 + ... + alrz-lr）的离散传递函数的有限脉冲响应滤波器，其中C是常数al1，al2， 。 。 。 alr表示样本周期内的间隔位置处的脉冲幅度，z-l.1，z-1.2。 。 。 z-l.r表示各间隔位置处的延迟分量。 在优选实施例中，有限脉冲响应滤波器采用极零消除技术来衰减选定频率的振幅。 基于多个振动频率中的每一个的s域中的共轭极点导出离散传递函数，其中zetai是阻尼比，ωgani是第i种模式的固有频率。

公开(公告)号：US06493172B1

公开(公告)日：2002-12-10

申请号：US09621495

申请日：2000-07-21

申请人： John C. Morris ,  Yi-Ping Hsin

发明人： John C. Morris ,  Yi-Ping Hsin

IPC分类号： G11B5596

CPC分类号： G11B5/59605 ,  G11B5/5552 ,  G11B21/083

摘要： The present invention incorporates an add-on adaptive feedforward controller into the existent track-following servomechanism of a dual-actuator disc drive to suppress the disturbance caused by mechanical interaction of the two actuator assemblies to thereby enhance the positioning accuracy at track following. The control signal fed into the power amplifier of one actuator is also used as the input signal of an adaptive controller in the other one. In an illustrative embodiment, the information is fed into an adaptive LMS filter. The output of the adaptive filter is then used as a feedforward signal to coordinate the head position with the desired track position. By matching the unknown disturbance dynamics with a filtered-x LMS (least mean square) adaptation algorithm, the output of the feedforward controller is able to cancel the disturbance from mechanical interaction, and thereby realizes the necessary fast, accurate head positioning.

摘要翻译： 本发明将附加自适应前馈控制器结合到双致动器盘驱动器的现有轨道跟随伺服机构中，以抑制由两个致动器组件的机械相互作用引起的干扰，从而提高跟踪跟踪时的定位精度。 馈送到一个致动器的功率放大器的控制信号也用作另一个致动器的自适应控制器的输入信号。 在说明性实施例中，信息被馈送到自适应LMS滤波器中。 然后将自适应滤波器的输出用作前馈信号，以将磁头位置与期望的轨道位置协调。 通过将未知干扰动力学与滤波x LMS（最小均方）适应算法进行匹配，前馈控制器的输出能够抵消机械相互作用的干扰，从而实现必要的快速准确的头定位。

公开(公告)号：US06804079B2

公开(公告)日：2004-10-12

申请号：US10017930

申请日：2001-12-12

申请人： Yi-Ping Hsin

发明人： Yi-Ping Hsin

IPC分类号： G11B5596

CPC分类号： G11B5/59627

摘要： An apparatus and method of correcting for written-in repeatable run-out in a disc drive having a servo loop for positioning a head over a rotating disc is provided. The rotating disc has at least one data track and servo information recorded in a plurality of servo fields along the data track. An initial written-in repeatable run-out compensation value for each servo field is computed as a function of a position error signal generated for each servo field during a first revolution of the disc. The initial written-in repeatable run-out compensation value for each servo field is then injected into the servo loop during another revolution of the disc. A compensated position error signal for each servo field is computed as a function of the initial written-in repeatable run-out compensation value for each servo field. A refined written-in repeatable run-out compensation value for each servo field is then computed as a function of the compensated position error signal for each servo field.

摘要翻译： 提供一种用于在具有用于将头部定位在旋转盘上的伺服回路的盘驱动器中校正可写入可重复跳动的装置和方法。 旋转盘具有沿着数据轨迹记录在多个伺服磁场中的至少一个数据磁道和伺服信息。 作为在盘的第一次旋转期间为每个伺服磁场产生的位置误差信号的函数，计算每个伺服磁场的初始写入可重复跳动补偿值。 然后，在光盘的另一次旋转期间，将每个伺服磁场的初始写入可重复的跳动补偿值注入到伺服回路中。 每个伺服字段的补偿位置误差信号作为每个伺服字段的初始写入可重复跳动补偿值的函数计算。 然后根据每个伺服场的补偿位置误差信号计算每个伺服场的精细写入可重复跳动补偿值。

公开(公告)号：US08619361B2

公开(公告)日：2013-12-31

申请号：US12750713

申请日：2010-03-31

申请人： Yi-Ping Hsin ,  Susumu Isago ,  Kazuo Masaki ,  Bausan Yuan

发明人： Yi-Ping Hsin ,  Susumu Isago ,  Kazuo Masaki ,  Bausan Yuan

IPC分类号： G02B27/64 ,  A61N5/00 ,  G03F7/20 ,  B82Y10/00

CPC分类号： G03F7/70358 ,  B82Y10/00 ,  G02B27/646 ,  G03F7/709

摘要： Methods and apparatus for providing vibration compensation using position measurements are disclosed. According to one aspect of the present invention, a method of compensating for vibrations of an object includes obtaining a plurality of position measurements associated with the object. The method also includes processing the plurality of position measurements to determine a derivative acceleration, and determining a compensatory force to counteract the vibrations of the object. Determining the compensatory force includes using the derivative acceleration. Finally, the method includes applying the compensatory force to the object.

摘要翻译： 公开了使用位置测量提供振动补偿的方法和装置。 根据本发明的一个方面，补偿对象的振动的方法包括获得与对象相关联的多个位置测量。 该方法还包括处理多个位置测量以确定导数加速度，以及确定补偿力以抵消物体的振动。 确定补偿力包括使用导数加速度。 最后，该方法包括将补偿力应用于物体。

公开(公告)号：US20120127445A1

公开(公告)日：2012-05-24

申请号：US12949130

申请日：2010-11-18

申请人： Akimitsu Ebihara ,  Yi-Ping Hsin ,  Kunitomo Fukai ,  Hideyuki Hashimoto ,  Bausan Yuan

发明人： Akimitsu Ebihara ,  Yi-Ping Hsin ,  Kunitomo Fukai ,  Hideyuki Hashimoto ,  Bausan Yuan

IPC分类号： G03F7/20 ,  G03B27/54 ,  G02B7/00

CPC分类号： G03F7/709 ,  G02B27/646 ,  G03F7/70258

摘要： An optical isolation assembly (30) for reducing the transmission of vibration from an optical barrel (25) to an optical element assembly (28) includes an optical mover assembly (256), a first measurement system (258), a second measurement system (260), and a control system (24). The optical mover assembly (256) moves, positions and supports the optical element assembly (28) relative to the optical barrel (25). The first measurement system (258) generates one or more first measurement signals that relate to the relative position between the optical element assembly (28) and the optical barrel (25). The second measurement system (260) generates one or more second measurement signals that relate to the absolute movement of the optical element assembly (28) along the first axis. The control system (24) controls the optical mover assembly (256) utilizing the first measurement signals and the second measurement signals.

摘要翻译： 用于减少从光学镜筒（25）到光学元件组件（28）的振动传播的光学隔离组件（30）包括光学移动器组件（256），第一测量系统（258），第二测量系统 260）和控制系统（24）。 光学移动器组件（256）相对于光学镜筒（25）移动，定位和支撑光学元件组件（28）。 第一测量系统（258）产生与光学元件组件（28）和光学镜筒（25）之间的相对位置相关的一个或多个第一测量信号。 第二测量系统（260）产生与光学元件组件（28）沿着第一轴线的绝对运动有关的一个或多个第二测量信号。 控制系统（24）利用第一测量信号和第二测量信号来控制光学移动器组件（256）。

公开(公告)号：US20060241873A1

公开(公告)日：2006-10-26

申请号：US11115673

申请日：2005-04-26

申请人： Yi-Ping Hsin ,  Gabor Szoboszlay ,  Kazuhiro Hirano ,  Kazuo Masaki ,  Christopher Smith ,  Ryoichi Kawaguchi ,  Bausan Yuan

发明人： Yi-Ping Hsin ,  Gabor Szoboszlay ,  Kazuhiro Hirano ,  Kazuo Masaki ,  Christopher Smith ,  Ryoichi Kawaguchi ,  Bausan Yuan

IPC分类号： G06F19/00

CPC分类号： G03F7/70766 ,  G03F7/70725

摘要： Embodiments of the invention relate to a cable force feedforward approach that takes into account the cable force in the counter-mass trajectory computation to reduce or eliminate vibration of the lens body caused by the cable force disturbance and corrective force exerted by the trim motors. In one embodiment, a method provides cable force feedforward control for a counter-mass of a stage with a cable connected to the counter-mass and using the cable force feedforward control to control one or more trim motors to produce a trim motor output force to be applied to the counter-mass, the counter-mass moving in response to a reaction force from movement of the stage. The method comprises measuring a counter-mass position y of the counter-mass in response to forces applied to the counter-mass; measuring a cable force ƒ exerted on the counter-mass by the cable which is connected to the counter-mass; generating a cable force function {circumflex over (ƒ)}(y, {dot over (y)}) of the measured cable force ƒ versus the counter-mass position y; and computing the trim motor output force u as , where w is a weighting function having a value from 0 to 1 and is selected for optimization.

摘要翻译： 本发明的实施例涉及一种电缆力前馈方法，其考虑到反质量轨迹计算中的电缆力，以减少或消除由电缆力扰动引起的透镜体的振动和由修剪马达施加的校正力。 在一个实施例中，一种方法为具有连接到反质量体的电缆的级的反质量提供电缆力前馈控制，并且使用电缆力前馈控制来控制一个或多个微调电动机以产生微调电动机的输出力 应用于反质量体，响应于舞台运动的反作用力而进行反质量运动。 该方法包括响应于施加到反质量块的力量来测量反质量块的反质量位置y; 通过连接到反质量块的电缆测量施加在反质量块上的电缆力f; 产生电缆力函数{（f）}（y，{dot over（y））测量的电缆力f与反质量位置y的关系;以及计算微调电机输出力u，其中w是加权 函数具有从0到1的值并且被选择用于优化。

公开(公告)号：US20110242660A1

公开(公告)日：2011-10-06

申请号：US12750713

申请日：2010-03-31

申请人： Yi-Ping Hsin ,  Susumu Isago ,  Kazuo Masaki ,  Bausan Yuan

发明人： Yi-Ping Hsin ,  Susumu Isago ,  Kazuo Masaki ,  Bausan Yuan

IPC分类号： G02B27/64

CPC分类号： G03F7/70358 ,  B82Y10/00 ,  G02B27/646 ,  G03F7/709

摘要： Methods and apparatus for providing vibration compensation using position measurements are disclosed. According to one aspect of the present invention, a method of compensating for vibrations of an object includes obtaining a plurality of position measurements associated with the object. The method also includes processing the plurality of position measurements to determine a derivative acceleration, and determining a compensatory force to counteract the vibrations of the object. Determining the compensatory force includes using the derivative acceleration. Finally, the method includes applying the compensatory force to the object.

摘要翻译： 公开了使用位置测量提供振动补偿的方法和装置。 根据本发明的一个方面，补偿对象的振动的方法包括获得与对象相关联的多个位置测量。 该方法还包括处理多个位置测量以确定导数加速度，以及确定补偿力以抵消物体的振动。 确定补偿力包括使用导数加速度。 最后，该方法包括将补偿力应用于物体。

公开(公告)号：US07989756B2

公开(公告)日：2011-08-02

申请号：US12262115

申请日：2008-10-30

申请人： Shiang-Lung Koo ,  Yi-Ping Hsin ,  Hideyuki Hashimoto ,  Bausan Yuan ,  Pai-Hsueh Yang

发明人： Shiang-Lung Koo ,  Yi-Ping Hsin ,  Hideyuki Hashimoto ,  Bausan Yuan ,  Pai-Hsueh Yang

IPC分类号： G02B7/00

CPC分类号： G02B27/646 ,  G03F7/70825 ,  G03F7/709

摘要： Disclosed are, inter alia, optical components that include an optical element (e.g., mirror) and at least three active-isolation mounts mounting the optical element to a frame (e.g., optical barrel or optical frame). An active-isolation mount has a non-contacting actuator connecting a respective location on the optical element to the frame and provides movability of the respective location relative to the frame in at least one direction. At least one displacement sensor is associated with each respective location on the optical element. The displacement sensors are sensitive to displacements of the respective locations in at least one respective direction and reference the displacements to an absolute reference. The actuators and sensors are connected to a servo control loop to provide feedback control.

摘要翻译： 特别地，公开了包括光学元件（例如，反射镜）和将光学元件安装到框架（例如，光学镜筒或光学框架）的至少三个主动隔离安装件的光学部件。 主动隔离安装件具有将光学元件上的相应位置连接到框架的非接触致动器，并且在至少一个方向上提供相对于框架的相应位置的可移动性。 至少一个位移传感器与光学元件上的每个相应位置相关联。 位移传感器对至少一个相应方向上各个位置的位移敏感，并将位移引用为绝对参考。 执行器和传感器连接到伺服控制回路以提供反馈控制。