Method for adjustably positioning a transducer for a disc drive
    1.
    发明授权
    Method for adjustably positioning a transducer for a disc drive 失效
    用于可调整地定位用于盘驱动器的换能器的方法

    公开(公告)号:US4825313A

    公开(公告)日:1989-04-25

    申请号:US8251

    申请日:1987-01-29

    CPC分类号: G11B5/5547

    摘要: A method of adjusting the position of a magnetic head in a magnetic head positioning mechanism positions the magnetic head at a target track on a magnetic disk. Since a floppy disk system is so designed as to make a floppy disk replaceable, it is necessary to adjust accurately the position of the magnetic head from the position of a spindle. According to the present invention, the position of the magnetic head is adjusted by the method wherein the displacement of an amount of deviation from a prescribed track in the magnetic head positioning mechanism is calculated beforehand, the amount of deviation is sampled subsequently by moving the magnetic head, this sampled amount of deviation is compared with the aforesaid calculated displacement to know the maximum and minimum values of the amounts of deviation on the track of movement of the magnetic head, and the adjustment is implemented on the basis of these values.

    摘要翻译: 在磁头定位机构中调整磁头的位置的方法将磁头定位在磁盘上的目标磁道上。 由于软盘系统被设计成可更换软盘,所以需要从主轴的位置精确地调整磁头的位置。 根据本发明,通过预先计算磁头定位机构中偏离规定轨迹的偏移量的方法来调节磁头的位置,随后通过移动磁头来采样偏差量 头部,将该取样量的偏差与上述计算的位移进行比较,以知道磁头的运动轨迹上的偏差量的最大值和最小值,并且基于这些值来实施调整。

    Positioning method and apparatus therefor
    2.
    发明授权
    Positioning method and apparatus therefor 失效
    定位方法及装置

    公开(公告)号:US4775825A

    公开(公告)日:1988-10-04

    申请号:US64557

    申请日:1987-06-22

    摘要: A method and apparatus for moving a moving member of a positioning mechanism to a target position by means of a stepper motor as a driver. The method and apparatus alleviate the positioning error attributable to the hysteresis of the stepper motor, which is inherent in stepper motor drive systems, by controlling the oscillation damping condition when the stepper motor has entered a damped oscillation phase in the vicinity to the target positon. The damping condition is controlled by varying the solid friction factor of the mechanism or the drawback torque constant of the stepper motor.

    摘要翻译: 一种通过步进电机作为驱动器将定位机构的移动部件移动到目标位置的方法和装置。 该方法和装置通过在步进电动机进入到目标位置附近的阻尼振荡阶段中时控制振荡阻尼条件来减轻归因于步进电动机的滞后的定位误差,这是步进电动机驱动系统固有的。 通过改变机构的固体摩擦系数或步进电机的缺点转矩常数来控制阻尼条件。

    Disk drive housing structure
    3.
    发明授权
    Disk drive housing structure 失效
    磁盘驱动器外壳结构

    公开(公告)号:US4894735A

    公开(公告)日:1990-01-16

    申请号:US206270

    申请日:1988-06-13

    IPC分类号: G11B25/04 G11B33/14

    CPC分类号: G11B33/14 G11B25/043

    摘要: A disk drive housing structure has a rotating disk for recording information and a transducer adapted to write and read information on and from the disk. The structure further includes a positioning system having at least an arm to which the transducer is fixed and which is adapted to selectively position the transducer along the radial direction of the disk transducer by turning the arm. The structure also includes a member on which the disk, transducer and positioning system are mounted, wherein the mounting member includes a first housing which supports thereon both ends of a rotary shaft of the recording medium and both ends of a rotary shaft of the positioning system, and which has a first aperture part. The first housing further includes a second aperture part through which the disk and the rotary shaft supporting the disk are inserted and to which a supporting member for the rotary shaft of the recording medium is fixed.

    Control method and apparatus for positioning servo system
    4.
    发明授权
    Control method and apparatus for positioning servo system 失效
    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

    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。

    Floppy disk driver
    6.
    发明授权
    Floppy disk driver 失效
    软盘驱动器

    公开(公告)号:US4604663A

    公开(公告)日:1986-08-05

    申请号:US707033

    申请日:1985-03-01

    CPC分类号: G11B17/0284 G11B19/20

    摘要: A floppy disk driver intended to protect the disk center hole from damage when the disk is mounted. The arrangement includes a speed detection circuit for detecting a relatively low rotational speed of the disk and a control circuit for speeding up the disk to a higher rotational speed for the read/write operation in response to the detection of the lower disk speed, whereby the disk is protected from damage by being rotated at the lower speed when its center hole is held between the collet and spindle.

    摘要翻译: 一个软盘驱动器,用于在安装磁盘时保护磁盘中心孔免受损坏。 该装置包括用于检测盘的相对低的转速的速度检测电路和用于响应于较低盘速的检测而将盘加速到较高转速以用于读/写操作的控制电路,由此, 当其中心孔保持在夹头和主轴之间时,通过以较低的速度旋转来防止盘被损坏。

    Magnetic head assembly
    7.
    发明授权
    Magnetic head assembly 失效
    磁头组件

    公开(公告)号:US4766509A

    公开(公告)日:1988-08-23

    申请号:US917052

    申请日:1986-10-09

    CPC分类号: G11B5/4833 G11B17/32 G11B5/54

    摘要: First and second magnetic heads, or magnetic head sliders containing these heads, which are brought into contact with a magnetic disc on its both sides so as to record and reproduce information signals, are respectively supported by first and second swing arms. The first and second swing arms are respectively supported by first and second elastic bodies. The swing arms are respectively provided with first and second adjusting screws for adjusting the movable range of the swing arms. The first adjusting screw operates to adjust the pressure of a first spring supported by the first arm and the position of the first magnetic head. The second adjusting screw operates to locate the associated second magnetic head to a position which is adjusted to the thus-adjusted position of the first magnetic head.

    摘要翻译: 第一和第二磁头或包含这些磁头的磁头滑块分别由第一和第二摆臂支撑,这两个磁头在其两侧与磁盘接触以便记录和再现信息信号。 第一和第二摆臂分别由第一和第二弹性体支撑。 摆臂分别设置有用于调节摆臂的可移动范围的第一和第二调节螺钉。 第一调节螺钉用于调节由第一臂支撑的第一弹簧和第一磁头的位置的压力。 第二调节螺钉用于将相关联的第二磁头定位到被调节到由此调整的第一磁头位置的位置。