公开(公告)号：US20040004782A1

公开(公告)日：2004-01-08

申请号：US10405306

申请日：2003-04-01

发明人： Masashi Kisaka

IPC分类号： G11B015/46

CPC分类号： G11B5/59605 ,  G11B5/5526

摘要： The object is to raise controller gain while absorbing magnet position dispersion in a motor, and implement rotation control that is resistant to the influence of disturbance. There are provided a spindle motor 3 that performs rotational drive of a predetermined drive object, and a controller 121 that controls rotational drive of this spindle motor 3 by comparing a pulse time in rotational drive of this spindle motor 3 with a predetermined target time and performing feedback; and also provided is a peak filter 122 that compensates control by the controller 121 by varying the target time dynamically so as to suppress the rotation frequency and higher harmonic components thereof contained in the drive current waveform of the spindle motor 3.

摘要翻译： 目的是提高控制器的增益，同时吸收电机中的磁体位置分散，实现抵抗干扰影响的旋转控制。 设置有执行预定驱动对象的旋转驱动的主轴电动机3以及通过将该主轴电动机3的旋转驱动的脉冲时间与规定的目标时间进行比较来控制该主轴电动机3的旋转驱动的控制器121， 反馈; 并且还提供了一种峰值滤波器122，其通过动态地改变目标时间来补偿控制器121的控制，以便抑制主轴电动机3的驱动电流波形中包含的旋转频率和高次谐波分量。

公开(公告)号：US20030123178A1

公开(公告)日：2003-07-03

申请号：US10329849

申请日：2002-12-26

申请人： Matsushita Electric Industrial Co., Ltd.

发明人： Makoto Gotou ,  Hisanori Nagase ,  Masaki Tagome

IPC分类号： G11B015/46 ,  H02P001/18

CPC分类号： H02P6/22 ,  H02P2209/07

摘要： A brushless motor has first and second power transistors which form current paths to three-phase windings so as to rotate a rotor. A position detecting part produces a position signal in response to a rotation of the rotor. An activation operation block controls active operation of the first and second power transistors in response to the position signal. The activation operation block includes a starting operation part which comprises an initial phase setting part, phase changing part and a phase correcting part. The initial phase setting part sets an initial phase of drive signals to the three-phase windings in response to the level of the position signal at the timing of a start signal. The phase changing part changes sequentially the phase of the drive signals to the three-phase windings in the positive direction in response to time. The phase correcting part corrects the phase of the drive signals to the three-phase windings in response to the occurrence of the rising and falling edges of the position signal. Therefore, the brushless motor with reduced position sensor can stably start the rotation of the rotor by using one position signal of one position sensor.

摘要翻译： 无刷电动机具有第一和第二功率晶体管，其形成到三相绕组的电流路径，以使转子旋转。 位置检测部分响应于转子的旋转产生位置信号。 激活操作块响应于位置信号控制第一和第二功率晶体管的有效操作。 激活操作块包括启动操作部分，其包括初始相位设置部分，相位改变部分和相位校正部分。 初始相位设置部分响应于在起始信号的定时处的位置信号的电平，将驱动信号的初始相位设置到三相绕组。 相位变化部根据时间顺序地将驱动信号的相位向正方向改变为三相绕组。 响应于位置信号的上升沿和下降沿的发生，相位校正部分将驱动信号的相位校正到三相绕组。 因此，具有减小位置传感器的无刷电动机可以通过使用一个位置传感器的一个位置信号来稳定地开始转子的旋转。

公开(公告)号：US20030103289A1

公开(公告)日：2003-06-05

申请号：US10234698

申请日：2002-09-05

发明人： Nobuyuki Sakamoto

IPC分类号： G11B021/04 ,  G11B021/02 ,  G11B015/46

CPC分类号： G11B33/144 ,  G11B19/28 ,  G11B21/02

摘要： A disk drive which can be used in particular under a low temperature environment is disclosed. The drive comprises a spindle motor (SPM) being a fluid dynamics bearing motor, and rotates a disk medium by the SPM. When an ambient temperature of the drive has changed to a low temperature, current consumption by the SPM increases to maintain steady rotation of the drive. When a CPU detects that current consumption by the SPM exceeds a specified value, the CPU restricts a current supplied to a voice coil motor (VCM) such that the total current amount does not exceed a specified maximum current capacity of the drive.

摘要翻译： 公开了一种可在低温环境下特别使用的磁盘驱动器。 该驱动器包括作为流体动力学轴承马达的主轴马达（SPM），并通过SPM旋转盘介质。 当驱动器的环境温度变为低温时，SPM的电流消耗增加，以保持驱动器的稳定旋转。 当CPU检测到SPM的电流消耗超过指定值时，CPU限制提供给音圈电机（VCM）的电流，使得总电流量不超过驱动器的规定的最大电流容量。

公开(公告)号：US20020181139A1

公开(公告)日：2002-12-05

申请号：US10003506

申请日：2001-10-31

发明人： Brent Melvin Weiehelt ,  Lon Buske ,  Mark August Toffle

IPC分类号： G11B021/02 ,  G11B015/46

CPC分类号： G11B5/59633 ,  G11B25/043 ,  G11B33/08

摘要： An ex-situ Servo Track Writer (STW) uses a support element that can extend between discs in a stack, and can also retract, permitting a high level of variation in the stack's positioning. The support element preferably has an engagement surface that is wide enough to permit the element to support the actuator throughout the element's range of (rotary) motion. Because the support structure is retractable, it can use low angles of approach like those of hyperbolic-shaped cams, without losing access to the outermost portions of the discs. The support structure may therefore be moved out of the servowriter actuator's path while position data is written to the outermost portions of the data surface.

摘要翻译： 一个非原位伺服轨迹记录器（STW）使用一个支撑元件，该支撑元件可以在堆叠中的光盘之间延伸，并且还可以缩回，允许堆叠位置的高水平变化。 支撑元件优选地具有足够宽的接合表面，以允许元件在整个元件的（旋转）运动范围内支撑致动器。 由于支撑结构是可缩回的，所以它可以使用像双曲面凸轮那样的低角度接近，而不会进入到盘的最外部。 因此，当位置数据被写入数据表面的最外部时，支撑结构可被移出伺服驱动器致动器的路径。

公开(公告)号：US20020181137A1

公开(公告)日：2002-12-05

申请号：US10123245

申请日：2002-04-17

申请人： Hitachi, Ltd.

发明人： Reiichi Kimura ,  Yasuhiko Kokami ,  Kunihiro Kawauchi ,  Minoru Kurosawa ,  Kichiya Itagaki

IPC分类号： G11B015/46

CPC分类号： H02P6/08 ,  G11B19/247 ,  H02P6/28

摘要： Currents of sine waveforms can be fed through coils by a relatively small-sized circuit, and thereby, highly dense magnetic storage can be realized with less rotation variations and a driving control circuit of a motor rotating at a low noise level can be provided. A coil of one phase of a three-phase brushless motor is driven with full amplitude at which an applied voltage becomes equal to a source voltage, and a coil of one of other phases is driven with gradually changing voltages so that a current of sine waveform is delivered, and a coil of the remaining phase is driven by feedback control so that a total current flowing through all coils becomes a predetermined current value.

摘要翻译： 正弦波形的电流可以通过相对较小尺寸的电路通过线圈馈送，从而可以以较小的旋转变化实现高度密集的磁存储，并且可以提供以低噪声水平旋转的电动机的驱动控制电路。 三相无刷电动机的一相线圈以全幅度驱动，施加的电压等于源电压，并且其中一相的线圈以逐渐变化的电压驱动，使得正弦波形的电流 并且通过反馈控制驱动剩余相的线圈，使得流过所有线圈的总电流成为预定电流值。

公开(公告)号：US20020030918A1

公开(公告)日：2002-03-14

申请号：US09946414

申请日：2001-09-04

发明人： Kelly J. Beavers ,  Michael A. Blatchley ,  David L. Detro ,  Christopher J. Turner ,  Thomas E. Zaczek

IPC分类号： G11B015/46 ,  G11B015/48

CPC分类号： G11B5/0086 ,  G11B5/00878 ,  G11B15/04 ,  G11B15/06 ,  G11B15/093 ,  G11B15/1875 ,  G11B15/43 ,  G11B15/4673

摘要： A method and apparatus for varying track recording speed to maximize host-to-tape data transfer rates is presented. Variable data transfer rates of host systems and networks are accommodated by continually adjusting the tape speed to match the tape drive to the host's actual transfer rate. jThe speed of the tape is adjusted according to both the level of data present in the tape drive data buffer and whether the current mode of the drive is write mode or read mode. In the preferred embodiment, when the tape speed is accelerated or decelerated while writing a number of data track pairs to tape, a predetermined number of dummy track pairs are first written to tape at the current speed. On the next write head phase after the speed is increased or decreased as appropriate while the read heads are over the track, a predetermined number of dummy track pairs followed by more data track pairs are written to the tape at the new speed.

摘要翻译： 提出了一种改变磁道记录速度以最大化主机到磁带数据传输速率的方法和装置。 主机系统和网络的可变数据传输速率通过不断调整磁带速度来匹配磁带驱动器与主机的实际传输速率。 j根据磁带驱动器数据缓冲区中存在的数据级别以及驱动器的当前模式是写入模式还是读取模式来调整磁带的速度。 在优选实施例中，当在将多个数据轨道对写入磁带的同时加速或减速磁带速度时，首先将预定数量的虚拟磁道对以当前速度写入磁带。 在读取磁头在磁道上方的速度增加或减小之后的下一个写入磁头相位上，预定数量的虚拟磁道对后跟更多的数据磁道对被以新的速度写入磁带。

公开(公告)号：US20010043530A1

公开(公告)日：2001-11-22

申请号：US09861029

申请日：2001-05-18

申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

发明人： Yoshiaki Nakatsuka ,  Yoshihiro Mushika ,  Hiroyuki Yamaguchi

IPC分类号： G11B015/46 ,  G11B033/02 ,  G11B020/00 ,  G11B020/18 ,  G11B027/36

CPC分类号： G11B33/142 ,  G11B19/04 ,  G11B19/26 ,  G11B20/00 ,  G11B20/10 ,  G11B27/36 ,  G11B2220/216 ,  G11B2220/2562 ,  G11B2220/2575

摘要： The present invention aims to provide a disk drive apparatus in which a pickup is prevented from being overheated. The disk drive apparatus includes a motor for rotating a disk-shaped storage medium, a pickup for reading/writing information from/onto the storage medium, a rotation controller for controlling the rotational speed of the storage medium, and an overheat detector for detecting overheating of the pickup. The pickup is cooled by using an airflow entailed by the rotating storage medium. In the disk drive apparatus, when the overheat detector detects overheating of the pickup, the rotation controller increases the rotational speed of the storage medium, thereby increasing the efficiency of cooling the pickup.

摘要翻译： 本发明的目的在于提供一种磁盘驱动装置，其中防止拾取器过热。 盘驱动装置包括用于旋转盘形存储介质的马达，用于从存储介质上读/写信息的拾取器，用于控制存储介质的转速的旋转控制器和用于检测过热的过热检测器 的皮卡。 通过使用旋转存储介质所需的气流来冷却拾取器。 在磁盘驱动装置中，当过热检测器检测到拾取器的过热时，旋转控制器增加存储介质的转速，从而提高了拾取器的冷却效率。

公开(公告)号：US20040246618A1

公开(公告)日：2004-12-09

申请号：US10861952

申请日：2004-06-04

发明人： Richard M. Ehrlich

IPC分类号： G11B005/596 ,  G11B015/46

CPC分类号： G11B5/59627 ,  G11B5/5582

摘要： Track mis-registration (TMR) correction is conditionally made in a hard disk drive using servo data in a closed loop servo control scheme, along with one or more alternative sensing schemes when an external shock or vibration occurs. The alternative sensing schemes include measurement of spindle motor speed using a frequency of servo markers read from a rotating disk, voice control motor (VCM) back emf, spindle motor speed back emf, and accelerometer readings. The predicted TMR resulting from the signal generated by the alternative sensing scheme(s) is simulated based upon a model of the disk drive system, and corrections are applied only if the expected TMR due to the disturbances is large enough that application of the corrections using the alternative sensing scheme would be likely to reduce the overall TMR. In one case, actual operation is occasionally performed with and without corrective TMR feedback from the selected sensing scheme(s), and the actual values are compared with predictions from the system model and the results are used to update the system model.

摘要翻译： 在使用闭环伺服控制方案中的伺服数据的硬盘驱动器中有条件地进行跟踪错误注册（TMR）校正，以及发生外部冲击或振动时的一种或多种替代感测方案。 替代传感方案包括使用从旋转盘读取的伺服标记的频率，语音控制电机（VCM）反电动势，主轴电动机速度反电动势和加速度计读数来测量主轴电动机速度。 由替代感测方案产生的信号产生的预测TMR是基于磁盘驱动系统的模型进行模拟的，并且只有当由于干扰而导致的期望的TMR足够大以至于应用使用 替代传感方案可能会降低整体TMR。 在一种情况下，实际操作有时在没有来自所选传感方案的校正TMR反馈的情况下执行，并且将实际值与来自系统模型的预测进行比较，并且结果用于更新系统模型。

公开(公告)号：US20040246617A1

公开(公告)日：2004-12-09

申请号：US10861836

申请日：2004-06-04

发明人： Richard M. Ehrlich

IPC分类号： G11B005/596 ,  G11B015/46

CPC分类号： G11B5/596 ,  G11B5/5582

摘要： Track mis-registration (TMR) correction is conditionally made in a hard disk drive using servo data in a closed loop servo control scheme, along with one or more alternative sensing schemes when an external shock or vibration occurs. The alternative sensing schemes include measurement of spindle motor speed using a frequency of servo markers read from a rotating disk, voice control motor (VCM) back emf, spindle motor speed back emf, and accelerometer readings. The predicted TMR resulting from the signal generated by the alternative sensing scheme(s) is simulated based upon a model of the disk drive system, and corrections are applied only if the expected TMR due to the disturbances is large enough that application of the corrections using the alternative sensing scheme would be likely to reduce the overall TMR. In one case, actual operation is occasionally performed with and without corrective TMR feedback from the selected sensing scheme(s), and the actual values are compared with predictions from the system model and the results are used to update the system model.

摘要翻译： 在使用闭环伺服控制方案中的伺服数据的硬盘驱动器中有条件地进行跟踪错误注册（TMR）校正，以及发生外部冲击或振动时的一种或多种替代感测方案。 替代传感方案包括使用从旋转盘读取的伺服标记的频率，语音控制电机（VCM）反电动势，主轴电动机速度反电动势和加速度计读数来测量主轴电动机速度。 由替代感测方案产生的信号产生的预测TMR是基于磁盘驱动系统的模型进行模拟的，并且只有当由于干扰而导致的期望的TMR足够大以至于应用使用 替代传感方案可能会降低整体TMR。 在一种情况下，实际操作有时在没有来自所选传感方案的校正TMR反馈的情况下执行，并且将实际值与来自系统模型的预测进行比较，并且结果用于更新系统模型。

公开(公告)号：US20040069887A1

公开(公告)日：2004-04-15

申请号：US10670418

申请日：2003-09-26

发明人： Bong-joo Kim ,  Hyeong-seok Choi ,  Jae-Kab Seo ,  Jun-young Kim ,  Byeong-bae Park

IPC分类号： G11B015/46

CPC分类号： G11B15/43

摘要： Disclosed is a reel clutch of a tape recorder. A plate spring is positioned between a reel gear and a reel disc of a reel disc assembly which is mounted on a deck of a tape recorder, and a stopper reel is provided on the reel disc to restrain the engaging height of the plate spring so that a torque is generated by the frictional contact between the reel disc and the plate spring, whereby assembly productivity can be enhanced and manufacturing costs can be reduced.

摘要翻译： 公开了一种磁带记录器的卷轴离合器。 板簧位于卷轴齿轮和安装在磁带录音机的台面上的卷轴盘组件的卷盘之间，并且在卷盘上设置有止动卷轴以限制板簧的接合高度，使得 通过卷盘和板簧之间的摩擦接触产生扭矩，由此可以提高组装生产率并且可以降低制造成本。