公开(公告)号：US08724245B1

公开(公告)日：2014-05-13

申请号：US13529861

申请日：2012-06-21

申请人： Steven C. Smith ,  Charles A. Park ,  Siri S. Weerasooriya ,  Jenghung Chen ,  Guoxiao Guo ,  Wei Guo

发明人： Steven C. Smith ,  Charles A. Park ,  Siri S. Weerasooriya ,  Jenghung Chen ,  Guoxiao Guo ,  Wei Guo

IPC分类号： G11B5/09

CPC分类号： G11B5/59616 ,  G11B5/5526 ,  G11B20/10222 ,  G11B2020/1232

摘要： A disk drive is disclosed comprising a head actuated over a disk, the disk comprising a plurality of servo sectors defining a plurality of servo tracks, wherein the servo tracks form a plurality of servo zones. A servo data rate of servo sectors in a first servo zone is different than a servo data rate of servo sectors in a second servo zone. A boundary of a first servo zone overlaps with a boundary of a second servo zone over a transition zone. The servo sectors of the first servo zone are interleaved with the servo sectors of the second servo zone within the transition zone. At least one servo parameter is adjusted when the head is over the transition zone in order to transition between the first servo zone and the second servo zone.

摘要翻译： 公开了一种磁盘驱动器，其包括在盘上致动的磁头，盘包括限定多个伺服磁道的多个伺服扇区，其中伺服磁道形成多个伺服区。 第一伺服区域中的伺服扇区的伺服数据速率与第二伺服区域中的伺服扇区的伺服数据速率不同。 第一伺服区的边界与过渡区上的第二伺服区的边界重叠。 第一伺服区的伺服扇区与过渡区内的第二伺服区的伺服扇区交错。 当头部在过渡区域上时，至少调整一个伺服参数，以便在第一个伺服区域和第二个伺服区域之间转换。

公开(公告)号：US07253989B1

公开(公告)日：2007-08-07

申请号：US11086814

申请日：2005-03-21

申请人： Pui-Wah Lau ,  Jenghung Chen ,  Yanbin Song

发明人： Pui-Wah Lau ,  Jenghung Chen ,  Yanbin Song

IPC分类号： G11B5/596

CPC分类号： G11B5/59627

摘要： A disk drive comprising an actuator including a head, a disk, and a processor connected to the actuator by a flex circuit cable. The processor under the control of a program to: apply a control signal for a seek operation and to apply a bias signal to the control signal to approximate the bias imparted by the flex circuit cable. The bias is determined from a data structure that stores: bias values for track zones representative of a first and second bias curves that approximate a bias imparted by the flex circuit cable upon the actuator as the actuator moves the head from the OD to the ID of the disk and from the ID to the OD of the disk, respectively. The bias values representative of the first and second bias curves are determined based upon a non-linear apportionment of track zones.

摘要翻译： 一种磁盘驱动器，其包括致动器，该致动器包括磁头，磁盘和通过柔性电路电缆连接到致动器的处理器。 所述处理器在程序的控制下：施加用于寻道操作的控制信号，并向所述控制信号施加偏置信号以近似由所述柔性电路电缆施加的偏置。 从存储有：代表第一和第二偏置曲线的轨道区域的偏置值的数据结构确定偏置，该第一和第二偏置曲线近似由柔性电路电缆在致动器上施加的偏压，因为致动器将磁头从OD移动到ID 磁盘和从ID到磁盘的OD分别。 基于轨道区域的非线性分配来确定表示第一和第二偏置曲线的偏置值。

公开(公告)号：US06903897B1

公开(公告)日：2005-06-07

申请号：US10607710

申请日：2003-06-27

申请人： Zhi Wang ,  Jenghung Chen

发明人： Zhi Wang ,  Jenghung Chen

IPC分类号： G11B5/55 ,  G11B5/596

CPC分类号： G11B5/5547 ,  G11B5/5534

摘要： A method for improving the performance of a rotary actuator in a disk drive, the rotary actuator comprises a voice coil motor (VCM) characterized by a torque parameter, the disk drive comprises a servo control system having a motor driver circuit for receiving a series of command effort signals (CEFs) transmitted based on a first seek profile, and for providing an operating current to VCM based on the CEFs for causing a movement of the actuator from a first radial location to a target radial location. The method includes recording the transmitted CEFs, and while actuator is moving: adjusting each recorded CEF to account for a disk drive influence on actuator movement; storing adjusted CEFs; monitoring velocity of moving actuator; calculating an acceleration value corresponding to moving actuator from the stored CEFs and monitored velocity; and adjusting the acceleration value to account for a radial torque parameter variation.

摘要翻译： 一种用于提高盘驱动器中的旋转致动器的性能的方法，旋转致动器包括以扭矩参数为特征的音圈电机（VCM），该盘驱动器包括伺服控制系统，该伺服控制系统具有用于接收一系列 基于第一搜索轮廓发送的命令努力信号（CEF），以及用于基于所述CEF将所述致动器的运动从第一径向位置移动到目标径向位置来向VCM提供工作电流。 该方法包括记录发送的CEF，并且在致动器正在移动时：调整每个记录的CEF以考虑磁盘驱动器对致动器运动的影响; 存储调整后的CEF; 监控运动执行器的速度; 从存储的CEF计算对应于移动致动器的加速度值和监测速度; 并调整加速度值以解决径向转矩参数变化。

公开(公告)号：US06529654B1

公开(公告)日：2003-03-04

申请号：US09847868

申请日：2001-05-02

申请人： Richard Koonwai Wong ,  Edgar D. Sheh ,  Jenghung Chen ,  Xiao Yang ,  Michael Barrett Wolfson

发明人： Richard Koonwai Wong ,  Edgar D. Sheh ,  Jenghung Chen ,  Xiao Yang ,  Michael Barrett Wolfson

IPC分类号： G02B626

CPC分类号： G02B6/359 ,  G02B6/3518 ,  G02B6/357 ,  G02B2006/12104

摘要： A method for switching signals using one of a plurality of mirrors in an array structure. The method includes determining an optical path to be formed between an input fiber and an output fiber. The method also includes determining a set of mirrors to be used to form the optical path. The set of mirrors includes at least a first mirror. The first mirror is coupled to a mechanical spring assembly and an actuation assembly. The method captures an analog signal indicative of a spatial position of the first mirror using a position sensing device. The sensing device is coupled to the mirror. The method also converts the signal analog signal into a digital signal. The method processes the digital signal indicative of the spatial position of the mirror using the digital signal processing device to obtain a characteristic of the mirror. The method provides a control signal based upon the characteristic of the mirror. The converts the control signal into an analog control signal. The method uses the analog control signal with the actuation assembly to set a desired position of the first mirror.

摘要翻译： 一种使用阵列结构中的多个反射镜之一切换信号的方法。 该方法包括确定要在输入光纤和输出光纤之间形成的光路。 该方法还包括确定要用于形成光路的一组反射镜。 镜组包括至少第一镜。 第一反射镜联接到机械弹簧组件和致动组件。 该方法使用位置感测装置捕获指示第一反射镜的空间位置的模拟信号。 感测装置耦合到反射镜。 该方法还将信号模拟信号转换为数字信号。 该方法使用数字信号处理装置处理指示反射镜的空间位置的数字信号，以获得反射镜的特性。 该方法基于反射镜的特性提供控制信号。 将控制信号转换为模拟控制信号。 该方法使用具有致动组件的模拟控制信号来设置第一反射镜的期望位置。