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1. 发明授权

US4703242A Control method and apparatus for positioning servo system 失效
标题翻译：伺服系统定位控制方法及装置
公开(公告)号：US4703242A
公开(公告)日：1987-10-27
申请号：US9072
申请日：1987-01-27
申请人： Kiyotake Kumazawa , Noriaki Minamide , Yoshihiro Moribe , Mikio Takahashi , Osamu Beppu , Masahiro Mitamura
发明人： Kiyotake Kumazawa , Noriaki Minamide , Yoshihiro Moribe , Mikio Takahashi , Osamu Beppu , Masahiro Mitamura
IPC分类号： G05B19/40
CPC分类号： G05B19/40 , G05B2219/41081
摘要： A magnetic disc head positioning system using a stepper motor eliminates positioning errors due to different approach directions and distances to a target track position through a drive control of temporarily stopping the head at a position immediately preceding or following the target track depending on the approach direction and, thereafter, moving the head from this position to the target track with a constant transient response. The head is brought to the temporary stop position by utilizing the overshooting response of the stepper motor so as to minimize the positioning time.
摘要翻译：使用步进电机的磁盘头定位系统通过根据接近方向通过暂时停止在目标轨道之前或之后的位置处的头部的驱动控制来消除由于不同的进场方向和到目标轨道位置的距离的定位误差，以及此后，以恒定的瞬态响应将磁头从该位置移动到目标磁道。通过利用步进电机的过冲响应将磁头带到临时停止位置，以最小化定位时间。

2. 发明授权

US4490662A Positioning method and apparatus therefor 失效
标题翻译：定位方法及装置
公开(公告)号：US4490662A
公开(公告)日：1984-12-25
申请号：US517813
申请日：1983-07-27
申请人： Yoshihiro Moribe , Yukitaka Hayashi , Masahiro Mitamura
发明人： Yoshihiro Moribe , Yukitaka Hayashi , Masahiro Mitamura
IPC分类号： G11B5/55 , H02P8/32 , H02K29/04
CPC分类号： G11B5/5547 , G11B5/5521 , H02P8/32
摘要： A positioning method and apparatus for precisely positioning a magnetic head on a desired track of a magnetic disc includes stepping motor having a plurality of stationary pole windings adapted to be rotated stepwise, and a mechanism for moving the magnetic head by a rotational movement of the stepping motor. By rotating the stepping motor stepwise by an integral multiple of the number of stationary pole windings of the stepping motor, the magnetic head is moved by one track width of the magnetic disc. By driving the stepping motor by the integral multiple of the number of stationary windings, the magnetic head is positioned by the same stationary pole windings without being affected by an assembling tolerance of the stationary pole windings. The stepping motor may also be driven so as to overrun a desired track by at least one step and then rotated in a reverse direction by the same number of steps so that a positioning error due to forward and reverse rotations of the stepping motor is eliminated.
摘要翻译：用于将磁头精确地定位在磁盘的期望轨道上的定位方法和装置包括具有适于逐步旋转的多个固定极绕组的步进电机，以及用于通过步进的旋转运动来移动磁头的机构发动机。通过使步进电机逐步旋转步进电动机的固定极绕组数量的整数倍，磁头被磁盘的一个磁道宽度移动。通过将步进电机驱动多个固定绕组的整数倍，磁头由相同的固定极绕组定位，而不受固定极绕组的组装公差的影响。步进电动机也可以被驱动以使所期望的轨道超过一步，然后以相反的数量的步骤在相反方向上旋转，从而消除了由于步进电动机的正向和反向旋转引起的定位误差。

3. 发明授权

US5159503A Phase and period synchronization for a slave disk drive 失效
标题翻译：从驱动器的相位和周期同步
公开(公告)号：US5159503A
公开(公告)日：1992-10-27
申请号：US531336
申请日：1990-05-31
申请人： Masahiro Mitamura , Takeo Iwai , Katsuhiro Tsuneta , Yoshinori Tuneda , Akihiro Nakamura
发明人： Masahiro Mitamura , Takeo Iwai , Katsuhiro Tsuneta , Yoshinori Tuneda , Akihiro Nakamura
IPC分类号： H02P5/52 , G11B19/28 , G11B27/00 , G11B27/10 , G11B27/28
CPC分类号： G11B19/28 , G11B27/002 , G11B27/10 , G11B27/28 , G11B2220/20
摘要： In a system equipped with a plurality of magnetic disk devices, one magnetic disk device is used as a device (master unit) for generating reference signals for rotating other plurality of devices in synchronism. Other one or more magnetic disk devices (slave units) are rotated in synchronism following the reference signals generated from the master unit. In order to maintain the synchronism of revolution between the master unit and the slave units, the conditions of revolution of the two spindle motors are compared to maintain the synchronism of revolution. Index pulses recorded on the magentic disks of the master unit and the slave units are used as reference signals for maintaining synchronism of revolutions. Index pulses from the master unit and the slave units are compared to find a phase difference signal and a period difference signal, and the rotational speed of the slave units is compensated by using these two signals.
摘要翻译：在配备有多个磁盘装置的系统中，使用一个磁盘装置作为用于产生用于同步旋转其他多个装置的参考信号的装置（主单元）。其他一个或多个磁盘设备（从属单元）按照从主单元产生的参考信号同步旋转。为了保持主机与从机之间的转速同步，将两台主轴电动机的转速进行比较，保持转速同步。记录在主单元和从单元的磁盘上的索引脉冲用作保持转数同步的参考信号。比较来自主单元和从单元的索引脉冲以找到相位差信号和周期差信号，并且通过使用这两个信号来补偿从单元的转速。

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