公开(公告)号：US08917469B1

公开(公告)日：2014-12-23

申请号：US13614894

申请日：2012-09-13

申请人： Guoxiao Guo ,  Donald Brunnett ,  Jianguo Zhou ,  Wai Ee Wong

发明人： Guoxiao Guo ,  Donald Brunnett ,  Jianguo Zhou ,  Wai Ee Wong

IPC分类号： G11B5/09

CPC分类号： G11B5/59655 ,  G11B5/59627 ,  G11B5/59644 ,  G11B20/10268 ,  G11B20/1403 ,  G11B20/18 ,  G11B2020/10916

摘要： A disk drive is disclosed comprising a head actuated over a disk comprising a plurality of tracks defined by a plurality of servo sectors. An estimated track ID is generated and a plurality of proximate track IDs is generated having values proximate the estimated track ID. A set of Gray codes is generated each corresponding to the estimated track ID and the proximate track IDs, wherein each Gray code in the set of Gray codes comprises N bits, and M bits out of a high order of the N bits comprise the same value. A recorded Gray code is detected in a first servo sector to generate a detected Gray code, and an error in the detected Gray code is corrected by inverting at least one bit in the detected Gray code comprising a value that is different from the value of the corresponding bit in the M bits.

摘要翻译： 公开了一种磁盘驱动器，包括在包括由多个伺服扇区限定的多个磁道的盘上驱动的磁头。 产生估计的轨道ID，并且生成具有接近估计轨道ID的值的多个邻近轨道ID。 产生一组格雷码，每组格对应于估计的轨道ID和邻近轨道ID，其中格雷码组中的每个格雷码包括N比特，并且N比特的高阶中的M比特包含相同的值 。 在第一伺服扇区中检测到记录的格雷码，以产生检测到的格雷码，并且通过将检测到的格雷码中的至少一个比特反相来校正检测格雷码中的误差，该比特包括不同于 M位中的相应位。

公开(公告)号：US08717704B1

公开(公告)日：2014-05-06

申请号：US13406797

申请日：2012-02-28

申请人： Jie Yu ,  Guoxiao Guo ,  Jianguo Zhou ,  Sanghoon Chu ,  Young-Hoon Kim ,  Abhishek Dhanda

发明人： Jie Yu ,  Guoxiao Guo ,  Jianguo Zhou ,  Sanghoon Chu ,  Young-Hoon Kim ,  Abhishek Dhanda

IPC分类号： G11B5/58

CPC分类号： G11B5/58 ,  G11B5/59644

摘要： A disk drive is disclosed comprising a disk having a plurality of servo tracks defined by servo sectors, and a head actuated over the disk. The disk drive further comprises control circuitry comprising a servo control system operable to position the head over the disk. A disturbance is induced in the servo control system, and while positioning the head over the disk, a data track is accessed. The disturbance induced in the servo control system causes the data track to be non-circular relative to a rotation axis of the disk such that the non-circular data track crosses multiple of the servo tracks over a revolution of the disk.

摘要翻译： 公开了一种磁盘驱动器，其包括具有由伺服扇区限定的多个伺服磁道的盘，以及在该盘上启动的磁头。 磁盘驱动器还包括控制电路，其包括可操作以将磁头定位在磁盘上的伺服控制系统。 在伺服控制系统中引起干扰，并且当将磁头定位在磁盘上时，可以访问数据磁道。 在伺服控制系统中引起的干扰使得数据轨道相对于盘的旋转轴线是非圆形的，使得非圆形数据轨道在盘的一圈上跨越多个伺服轨道。

公开(公告)号：US08737013B2

公开(公告)日：2014-05-27

申请号：US13298241

申请日：2011-11-16

申请人： Jianguo Zhou ,  Wei Xi ,  Kuang-Yang Tu ,  Alain Chahwan

发明人： Jianguo Zhou ,  Wei Xi ,  Kuang-Yang Tu ,  Alain Chahwan

IPC分类号： G11B5/596

CPC分类号： G11B5/59694

摘要： A disk drive is disclosed comprising a disk, a head, and control circuitry comprising a servo control system operable to actuate the head over the disk. A plurality of disturbance signals is generated in response to a vibration. A plurality of correlations is generated in response to each disturbance signal and an error signal of the servo control system. At least one of the disturbance signals is selected in response to the correlations. A feed-forward compensation value is generated in response to the selected disturbance signal, and the feed-forward compensation value is applied to the servo control system to compensate for the vibration.

摘要翻译： 公开了一种磁盘驱动器，其包括磁盘，磁头和控制电路，其包括可操作以在磁盘上致动磁头的伺服控制系统。 响应于振动产生多个干扰信号。 响应于每个干扰信号和伺服控制系统的误差信号产生多个相关。 响应于相关性来选择至少一个干扰信号。 响应于所选择的干扰信号产生前馈补偿值，并且将前馈补偿值应用于伺服控制系统以补偿振动。

公开(公告)号：US20130054204A1

公开(公告)日：2013-02-28

申请号：US13483997

申请日：2012-05-30

申请人： Huaguang Zhang ,  Qiuye Sun ,  Zhenwei Liu ,  Tieyan Zhang ,  Xiangping Meng ,  Qingqi Zhao ,  Jianguo Zhou ,  Jun Yang ,  Dazhong Ma ,  Yan Zhao ,  Xinrui Liu ,  Jing Guo

发明人： Huaguang Zhang ,  Qiuye Sun ,  Zhenwei Liu ,  Tieyan Zhang ,  Xiangping Meng ,  Qingqi Zhao ,  Jianguo Zhou ,  Jun Yang ,  Dazhong Ma ,  Yan Zhao ,  Xinrui Liu ,  Jing Guo

IPC分类号： G06G7/48 ,  G06F7/60

CPC分类号： H02J3/26 ,  H02J3/14 ,  H02J2003/007 ,  Y02E40/50 ,  Y02E60/76 ,  Y04S40/22

摘要： Disclosed are an automatic three-phase unbalanced load compensation experimental device and its control method. The experimental device comprises an automatic compensation device, a load simulation part, and detection, display and control parts. The automatic compensation device comprises power capacitors and intelligent grouping compound switches; the detection, display and control part comprises current transformers, molded case circuit breakers, a three-phase digital display ammeter, a three-phase electric power monitoring instrument, a protocol conversion module, 485 buses, Ethernet cables and an upper computer; the load simulation part comprises phase A, B and C loads which are in star connection and are same in component and circuit connection, an analog output module and a relay output module. Power monitoring instrument and digital ammeter are connected to the grid by circuit breaker and current transformer. The automatic compensation device and load simulation part are connected to the grid in parallel.

摘要翻译： 公开了一种自动三相不平衡负载补偿实验装置及其控制方法。 实验装置包括自动补偿装置，负载模拟部件，检测，显示和控制部件。 自动补偿装置包括电力电容器和智能分组复合开关; 检测，显示和控制部分包括电流互感器，塑壳断路器，三相数字显示电流表，三相电力监控仪器，协议转换模块，485总线，以太网电缆和上位机; 负载模拟部分包括星形连接中的相A，B和C负载，在组件和电路连接中相同，模拟输出模块和继电器输出模块。 电力监控仪表和数字电流表通过断路器和电流互感器连接到电网。 自动补偿装置和负载模拟部分并联连接到电网。

公开(公告)号：US08965747B2

公开(公告)日：2015-02-24

申请号：US13483997

申请日：2012-05-30

申请人： Huaguang Zhang ,  Qiuye Sun ,  Zhenwei Liu ,  Tieyan Zhang ,  Xiangping Meng ,  Qingqi Zhao ,  Jianguo Zhou ,  Jun Yang ,  Dazhong Ma ,  Yan Zhao ,  Xinrui Liu ,  Jing Guo

发明人： Huaguang Zhang ,  Qiuye Sun ,  Zhenwei Liu ,  Tieyan Zhang ,  Xiangping Meng ,  Qingqi Zhao ,  Jianguo Zhou ,  Jun Yang ,  Dazhong Ma ,  Yan Zhao ,  Xinrui Liu ,  Jing Guo

IPC分类号： G06F17/50 ,  H02J3/26 ,  H02J3/14 ,  H02J3/00

CPC分类号： H02J3/26 ,  H02J3/14 ,  H02J2003/007 ,  Y02E40/50 ,  Y02E60/76 ,  Y04S40/22

摘要： An automatic three-phase unbalanced load compensation experimental device includes an automatic compensation device, a load simulation part, and detection, display and control parts. The automatic compensation device includes power capacitors and intelligent grouping compound switches. The detection, display and control part includes a plurality of current transformers, molded case circuit breakers, a three-phase digital display ammeter, a three-phase electric power monitoring instrument, a protocol conversion module, RS-485 buses, Ethernet cables and an upper computer. The load simulation part includes phase A, B and C loads which are in star connection and are same in component and circuit connection, an analog output module and a relay output module. A power monitoring instrument and digital ammeter are connected to the grid by circuit breaker and the plurality of current transformers. The automatic compensation device and load simulation part are connected to the grid in parallel.

摘要翻译： 自动三相不平衡负载补偿实验装置包括自动补偿装置，负载模拟部分，检测，显示和控制部件。 自动补偿装置包括电力电容器和智能分组复合开关。 检测，显示和控制部分包括多个电流互感器，塑壳断路器，三相数字显示电流表，三相电力监控仪器，协议转换模块，RS-485总线，以太网电缆和 上位机 负载模拟部分包括星形连接的相位A，B和C负载，分量和电路连接相同，模拟输出模块和继电器输出模块。 电力监控仪器和数字电流表通过断路器和多个电流互感器连接到电网。 自动补偿装置和负载模拟部分并联连接到电网。

公开(公告)号：USD749045S1

公开(公告)日：2016-02-09

申请号：US29519882

申请日：2015-03-09

申请人： Jianguo Zhou

设计人： Jianguo Zhou

公开(公告)号：US08724254B1

公开(公告)日：2014-05-13

申请号：US13104835

申请日：2011-05-10

申请人： Shan Tang ,  Jianjun Li ,  Jianguo Zhou ,  Wei Xi

发明人： Shan Tang ,  Jianjun Li ,  Jianguo Zhou ,  Wei Xi

IPC分类号： G11B5/596 ,  G11B5/54

CPC分类号： G11B5/5552 ,  G11B5/596

摘要： A method of evaluating a dual stage actuator (DSA) servo loop in a disk drive is disclosed. The disk drive comprises a dual stage actuator (DSA) servo loop operable to actuate a head over a disk surface. A first sinusoidal signal A1 is added to a VCM control signal B1 generated by a VCM servo loop. A response of the VCM control signal B1 to the first sinusoidal signal A1 is measured, and a closed loop response of the VCM servo loop is computed in response to A1 and B1. A second sinusoidal signal A2 is added to a microactuator control signal B2 generated by a microactuator servo loop. A response of the microactuator control signal B2 to the second sinusoidal signal A2 is measured, and a closed loop response of the microactuator servo loop is computed in response to A2 and B2.

摘要翻译： 公开了一种评估磁盘驱动器中的双级致动器（DSA）伺服环路的方法。 磁盘驱动器包括可操作以在磁盘表面上致动磁头的双级致动器（DSA）伺服回路。 将第一正弦信号A1加到由VCM伺服回路产生的VCM控制信号B1中。 测量VCM控制信号B1对第一正弦信号A1的响应，并根据A1和B1计算VCM伺服回路的闭环响应。 第二正弦信号A2被添加到由微致动器伺服回路产生的微致动器控制信号B2。 测量微致动器控制信号B2对第二正弦信号A2的响应，并响应于A2和B2计算微致动器伺服回路的闭环响应。

公开(公告)号：US08885283B1

公开(公告)日：2014-11-11

申请号：US13288125

申请日：2011-11-03

申请人： Alain Chahwan ,  Jianguo Zhou ,  Wei Xi

发明人： Alain Chahwan ,  Jianguo Zhou ,  Wei Xi

IPC分类号： G11B21/02

CPC分类号： G11B19/042 ,  G11B5/5582

摘要： A disk drive is disclosed comprising a head actuated over a disk having a plurality of data tracks. A vibration is detected, and a write operation is configured to write a first plurality of blocks and a second plurality of blocks to a target data track based on the detected vibration. The first plurality of blocks are written to the target data track during a first revolution of the disk, and the second plurality of blocks are written to the target data track during a second revolution of the disk.

摘要翻译： 公开了一种磁盘驱动器，包括在具有多个数据磁道的盘上致动的磁头。 检测振动，并且写入操作被配置为基于检测到的振动将第一多个块和第二多个块写入目标数据轨道。 在盘的第一次旋转期间，将第一组多个块写入目标数据轨道，并且在盘的第二次旋转期间将第二多个块写入目标数据轨道。