公开(公告)号：US06707641B1

公开(公告)日：2004-03-16

申请号：US09920580

申请日：2001-07-31

申请人： Kamran Oveyssi ,  Raffi Codilian

发明人： Kamran Oveyssi ,  Raffi Codilian

IPC分类号： G11B1702

CPC分类号： H02K1/148 ,  G11B19/2009 ,  G11B25/043 ,  H02K21/24

摘要： A spindle motor for use in a disk drive has a spindle motor hub having an axis of rotation, an annular magnet element coupled to the spindle motor hub, and a spindle motor stator. The spindle motor stator includes a stator rim formed of a plurality of laminate layers concentrically disposed about the axis of rotation. The stator rim has a plurality of stator teeth portions in operable communication with the magnet element for rotating the spindle motor hub. The stator teeth portions each have a magnetic flux surface disposed orthogonal to the axis of rotation. The spindle motor stator has a plurality of windings distributed along the stator rim. The windings each have a winding axis parallel to the axis of rotation and being disposed about respective ones of the stator teeth.

摘要翻译： 用于磁盘驱动器的主轴电动机具有具有旋转轴的主轴电动机毂，联接到主轴电动机毂的环形磁体元件和主轴电动机定子。 主轴电动机定子包括由围绕旋转轴线同心设置的多个层叠层形成的定子轮辋。 定子轮辋具有多个定子齿部分，其与磁体元件可操作地连通，用于旋转主轴电动机毂。 定子齿部各自具有与旋转轴线正交配置的磁通面。 主轴电动机定子具有沿着定子轮辋分布的多个绕组。 绕组各自具有平行于旋转轴线的绕轴，并且围绕相应的定子齿设置。

公开(公告)号：US06657811B1

公开(公告)日：2003-12-02

申请号：US09866204

申请日：2001-05-25

申请人： Raffi Codilian

发明人： Raffi Codilian

IPC分类号： G11B5596

CPC分类号： G11B5/5565 ,  G11B5/5526

摘要： A servo system in a disk drive in a mobile device is responsive to an environment signal from the mobile device to generate a first current profile to a head actuator when the mobile device is docked and to generate a second current profile to the head actuator when the mobile device is mobile. The second current profile requires less power than the first current profile, thus reducing current drain on a battery in the mobile device.

摘要翻译： 移动设备中的磁盘驱动器中的伺服系统响应于来自移动设备的环境信号，以在移动设备对接时产生到头致动器的第一电流轮廓，并且当第一电流轮廓发生到头致动器时 移动设备是移动设备。 第二电流曲线要求比第一电流曲线更少的功率，从而减少移动设备中电池的电流消耗。

公开(公告)号：US06571460B1

公开(公告)日：2003-06-03

申请号：US10295731

申请日：2002-11-15

申请人： Shawn E. Casey ,  Raffi Codilian ,  Roger G. Davis ,  Jorge Haro

发明人： Shawn E. Casey ,  Raffi Codilian ,  Roger G. Davis ,  Jorge Haro

IPC分类号： H23P1900

CPC分类号： G11B5/4813 ,  G11B5/5526 ,  G11B5/5569 ,  Y10S29/901 ,  Y10T29/49004 ,  Y10T29/49025 ,  Y10T29/49027 ,  Y10T29/5313 ,  Y10T29/53165

摘要： An aspect of the invention can be regarded as a method of balancing a rotary actuator for use in a rotatable head stack assembly (HSA) portion in a disk drive. The rotary actuator has a pivot axis, and the rotatable HSA portion has an installed HSA portion center-of-gravity. The method provides for determining a desired rotary actuator center-of-gravity location for locating the installed HSA portion center-of-gravity along the pivot axis for mitigating acceleration of the rotary actuator about the pivot axis due to external linear acceleration experienced by the disk drive during a track-follow operation. The method further provides for measuring weight distribution characteristics of the rotary actuator to determine an actual rotary actuator center-of-gravity. The method further provides for selectively modifying weight distribution characteristics of the rotary actuator to locate the actual rotary actuator center-of-gravity at the desired rotary actuator center-of-gravity location.

摘要翻译： 本发明的一个方面可以被认为是平衡用于磁盘驱动器中的可旋转磁头堆叠组件（HSA）部分中的旋转致动器的方法。 旋转致动器具有枢转轴线，并且可旋转HSA部分具有安装的HSA部分重心。 该方法提供用于确定期望的旋转致动器重心位置，用于沿着枢转轴线定位所安装的HSA部分重心，以减轻旋转致动器围绕枢轴的加速度，这是由于盘受到的外部线性加速 在跟踪操作期间开车。 该方法进一步提供了测量旋转致动器的重量分布特性以确定实际的旋转致动器重心。 该方法还提供了选择性地改变旋转致动器的重量分布特性，以将实际的旋转致动器重心定位在期望的旋转致动器重心位置。

公开(公告)号：US06369972B1

公开(公告)日：2002-04-09

申请号：US09311913

申请日：1999-05-14

申请人： Raffi Codilian ,  George S. Bouchaya

发明人： Raffi Codilian ,  George S. Bouchaya

IPC分类号： G11B555

CPC分类号： G11B5/5526 ,  G11B5/5565

摘要： A method for controlling the current applied to a voice coil motor (VCM) prevents overheating of a coil in the VCM. The method includes the steps of defining an acceleration interval for measuring the distance traveled by a head moved by the VCM. The method also defines a distance traveled during the acceleration interval which can be used as a reference for indicating that the coil is being overheated. The VCM is driven for the acceleration interval and the distance traveled during the interval is measured and compared to the reference distance. If the difference exceeds a threshold, then the current being applied to the coil is controlled to maintain the coil temperature within a limit. If, however, the difference does not exceed the threshold, the current being applied to the coil is controlled to meet a performance requirement.

摘要翻译： 用于控制施加到音圈电机（VCM）的电流的方法防止VCM中线圈的过热。 该方法包括以下步骤：定义用于测量由VCM移动的头部移动距离的加速度间隔。 该方法还定义在加速间隔期间行进的距离，其可以用作用于指示线圈过热的参考。 驱动VCM加速间隔，并测量间隔内行驶的距离，并将其与参考距离进行比较。 如果差异超过阈值，则控制施加到线圈的电流以将线圈温度维持在极限内。 然而，如果差异不超过阈值，则控制施加到线圈的电流以满足性能要求。

公开(公告)号：US06104153A

公开(公告)日：2000-08-15

申请号：US256645

申请日：1999-02-23

申请人： Raffi Codilian ,  Steven Nemshick ,  Robert P. Ryan

发明人： Raffi Codilian ,  Steven Nemshick ,  Robert P. Ryan

IPC分类号： G11B19/20 ,  H02K7/10

CPC分类号： G11B19/20

摘要： A disk drive employs a method of operating a spindle motor to respond to a spin-down command to reduce the time required for spinning down and subsequently spinning up the spindle motor. The disk drive is connectable to a power supply having a fixed DC voltage. The spindle motor includes a stator having a plurality of windings and a rotor rotatable at a variable spin-rate. The rotor has an angular position relative to the stator. The disk drive includes switching elements coupled to the fixed DC voltage and the plurality of windings. The switching elements are controlled to sequentially apply the fixed DC voltage across a selected combination of the windings to generate a negative torque on the rotor such that a controlled braking operation is performed to decelerate the rotor to a selected spin-rate .omega.1. After the variable spin-rate is reduced to the selected spin-rate .omega.1, the switching elements are controlled to apply the fixed DC voltage across at least one of the windings such that a controlled rotor-stopping operation is performed to control the angular position of the rotor when the rotor comes to a stop at the end of the controlled rotor-stopping operation.

摘要翻译： 磁盘驱动器采用操作主轴马达来响应旋转减速命令的方法，以减少旋转和随后旋转主轴马达所需的时间。 磁盘驱动器可连接到具有固定DC电压的电源。 主轴电动机包括具有多个绕组的定子和可以可变转速旋转的转子。 转子具有相对于定子的角度位置。 磁盘驱动器包括耦合到固定DC电压和多个绕组的开关元件。 控制开关元件以顺序地施加固定的DC电压跨所选择的绕组组合，以在转子上产生负转矩，使得执行受控的制动操作以将转子减速至选定的旋转速率ω1。在 可变旋转速率降低到选定的旋转速率ω1，控制开关元件以在至少一个绕组上施加固定的DC电压，使得执行受控的转子停止操作以控制转子的角位置 转子在受控转子停止运转结束时停止转子。

公开(公告)号：US07436625B1

公开(公告)日：2008-10-14

申请号：US11032946

申请日：2005-01-11

申请人： Shan-Shuong Chiou ,  Shuo-Hao Chen ,  Raffi Codilian

发明人： Shan-Shuong Chiou ,  Shuo-Hao Chen ,  Raffi Codilian

IPC分类号： G11B17/02

CPC分类号： G11B19/2009

摘要： A spindle motor includes a shaft defining a longitudinal axis, a hub, a bearing assembly disposed between the hub and the shaft for allowing the hub to rotate, and a stator. The stator includes an inner diameter, an outer diameter, a stator tooth having a distal end, and a coil wound around the stator tooth. The stator tooth has a lower surface extending between the coil and the distal end of the stator tooth. The spindle motor includes a stator support structure supporting one of the inner and outer diameters, the stator support structure having an upper surface facing the lower surface, wherein at least one of the upper surface of the stator support structure and the lower surface of the stator tooth defines a cavity.

摘要翻译： 主轴电动机包括限定纵向轴线的轴，轮毂，设置在轮毂和轴之间以允许轮毂旋转的轴承组件和定子。 定子包括内径，外径，具有远端的定子齿和缠绕在定子齿上的线圈。 定子齿具有在线圈和定子齿的远端之间延伸的下表面。 主轴电动机包括支撑内径和外径之一的定子支撑结构，定子支撑结构具有面向下表面的上表面，其中定子支撑结构的上表面和定子的下表面中的至少一个 齿定义一个空腔。

公开(公告)号：US07023640B1

公开(公告)日：2006-04-04

申请号：US10856400

申请日：2004-05-27

申请人： Raffi Codilian ,  Lan V. Ngo ,  Norman D. Gardner

发明人： Raffi Codilian ,  Lan V. Ngo ,  Norman D. Gardner

IPC分类号： G11B19/04 ,  G11B21/02 ,  G11B19/02

CPC分类号： G11B19/04 ,  G11B5/5582 ,  G11B5/596

摘要： A disk drive comprising a first sensor mounted on a nominally stationary portion of the disk drive and adapted to detect acceleration disturbances of the disk drive. The disk drive further comprising: a dual-function subsystem having a first circuit adapted to provide a write-inhibit signal and a second circuit adapted to provide a feed-forward basis signal, the dual-function subsystem adapted to receive a first sensor signal from the first sensor and to provide (a) the write-inhibit signal based on the received first sensor signal and a first threshold value, and (b) the feed-forward basis signal based on the received first sensor signal.

摘要翻译： 一种磁盘驱动器，包括安装在磁盘驱动器的标称静止部分上并适于检测磁盘驱动器的加速度干扰的第一传感器。 所述磁盘驱动器还包括：双功能子系统，具有适于提供写禁止信号的第一电路和适于提供前馈基准信号的第二电路，所述双功能子系统适于从 并且基于所接收的第一传感器信号和第一阈值提供（a）禁止写入信号，以及（b）基于所接收的第一传感器信号的前馈基准信号。

公开(公告)号：US06972926B1

公开(公告)日：2005-12-06

申请号：US10062955

申请日：2002-01-31

申请人： Raffi Codilian

发明人： Raffi Codilian

IPC分类号： G11B5/60 ,  G11B25/04 ,  G11B33/12 ,  G11B33/14

CPC分类号： G11B33/121 ,  G11B5/6005 ,  G11B25/043 ,  G11B33/14

摘要： According to the present invention, there is provided a disk drive that includes a housing including a body portion and an airflow suppressor portion extending from the body portion. The disk drive includes a disk that includes an inner disk edge, an outer disk edge and a disk surface. The disk drive includes a head stack assembly rotatably coupled to the body portion. The head stack assembly includes an actuator arm including a first arm surface disposed adjacent the disk surface and an opposing second arm surface. The disk drive includes upstream and downstream regions. The airflow suppressor portion is radially disposed substantially between the inner and outer disk edges within the upstream region and extends entirely from the housing body portion beyond the second arm surface towards the disk surface for modifying disk rotation induced airflow upon the head stack assembly.

摘要翻译： 根据本发明，提供了一种盘驱动器，其包括壳体，壳体包括主体部分和从主体部分延伸的气流抑制部分。 磁盘驱动器包括包括内盘边缘，外盘边缘和盘表面的盘。 磁盘驱动器包括可旋转地联接到主体部分的磁头堆叠组件。 头部堆叠组件包括致动器臂，该致动器臂包括邻近盘表​​面设置的第一臂表面和相对的第二臂表面。 磁盘驱动器包括上游和下游区域。 气流抑制器部分基本上位于上游区域中的内盘边缘和外盘边缘之间，并且完全从壳体主体部分延伸超过第二臂表面朝向盘表面，用于修改头堆叠组件上的盘旋转引起的气流。

公开(公告)号：US06968422B1

公开(公告)日：2005-11-22

申请号：US10609241

申请日：2003-06-27

申请人： Raffi Codilian ,  Mark F. Vallis

发明人： Raffi Codilian ,  Mark F. Vallis

IPC分类号： G06F3/06 ,  G06F12/00 ,  G11B5/48 ,  G11B5/55

CPC分类号： G11B5/5582 ,  G06F3/0601 ,  G06F2003/0692 ,  G11B5/5547

摘要： A disk drive is disclosed which executes a rotational position optimization (RPO) algorithm to select a next command to execute from a command queue relative to an estimated access time. If an external vibration is detected, the RPO algorithm increases at least one of an estimated seek latency, an estimated settle latency, and an estimated rotational latency for each command in the command queue.

摘要翻译： 公开了一种磁盘驱动器，其执行旋转位置优化（RPO）算法来选择相对于估计的访问时间从命令队列执行的下一个命令。 如果检测到外部振动，则RPO算法增加命令队列中每个命令的估计寻呼延迟，估计结算延迟和估计旋转等待时间中的至少一个。

公开(公告)号：US06934114B1

公开(公告)日：2005-08-23

申请号：US10280684

申请日：2002-10-24

申请人： Raffi Codilian ,  Ralph A. Proud

发明人： Raffi Codilian ,  Ralph A. Proud

IPC分类号： G11B5/596

CPC分类号： G11B5/59688 ,  G11B5/59655

摘要： Reduced bit number wedge identification techniques for use within a rotating media storage device (RMSD) are disclosed. The RMSD includes a disk having a circumferential track that includes a plurality of embedded servo wedges utilized in track following. A substantial majority of the plurality of wedges include a reduced bit wedge ID field that does not have a sufficient number of bits to uniquely identify the wedge within the track. A combined wedge ID code is formed from reading at least first and second reduced bit wedge ID numbers from first and second wedges, respectively, which is used to uniquely identifying a wedge.

摘要翻译： 公开了在旋转介质存储设备（RMSD）内使用的减少位数楔识别技术。 RMSD包括具有包括在跟踪中使用的多个嵌入式伺服楔的圆周轨道的盘。 多个楔形体的绝大多数包括不具有足够数量的位以唯一地识别轨道内的楔形物的减小的位楔ID ID字段。 通过分别读取来自第一和第二楔形的至少第一和第二缩小的比特楔形ID号来形成组合的楔形ID码，其用于唯一地识别楔形物。