公开(公告)号：US4954905A

公开(公告)日：1990-09-04

申请号：US290187

申请日：1988-12-27

申请人： Noriaki Wakabashi ,  Shuichi Yoshida ,  Toshio Inaji ,  Hiromi Onodera ,  Tsukasa Yoshiura ,  Hiroshi Mitani

发明人： Noriaki Wakabashi ,  Shuichi Yoshida ,  Toshio Inaji ,  Hiromi Onodera ,  Tsukasa Yoshiura ,  Hiroshi Mitani

IPC分类号： G11B5/55 ,  G11B7/085 ,  G11B7/09 ,  G11B21/08

CPC分类号： G11B21/085 ,  G11B5/5547 ,  G11B7/08517 ,  G11B7/0946

摘要： A data transducer position control system for data disk storage drive system involves an electronically and mechanically improved method and apparatus for position control of the data transducer adapted to write and/or read information data in and/or from the data tracks provided on a data disk. Particularly, the system comprises a positioning device for actuating the data transducer, a position encoder for detecting the position of the data transducer, a tracking error detector for detecting the relative position of the data transducer to the selected data track, and compensating position calculator for precise tracking so that the speed-up of track access can be effected, that the accuracy in positioning can be improved, that the system itself can be compact in size and reduced in energy consumption, and that the control electronic system can also be simple in arrangement.

公开(公告)号：US4999558A

公开(公告)日：1991-03-12

申请号：US277198

申请日：1988-11-29

申请人： Hiromi Onodera ,  Toshio Inaji ,  Tsukasa Yoshiura ,  Noriaki Wakabayashi ,  Hiroshi Mitani ,  Mitsuo Tokura

发明人： Hiromi Onodera ,  Toshio Inaji ,  Tsukasa Yoshiura ,  Noriaki Wakabayashi ,  Hiroshi Mitani ,  Mitsuo Tokura

IPC分类号： H02P8/00 ,  G05B19/39

CPC分类号： G05B19/39 ,  G05B2219/41101 ,  G05B2219/41326 ,  G05B2219/42122

摘要： A position control system is disclosed for positioning a stepping motor to a target position according to a closed loop control system. The closed loop control system controls the position of the stepping motor according to a current position signal outputted from an encoder operatively coupled to the stepping motor. Furthermore, circuitry is provided for correcting electrically a torque angle error of the stepping motor caused by a positional error between the stepping motor and the encoder due to a mechanical mounting error of the encoder, to thereby drive the stepping motor at a torque angle maintained at the most desirable range.

公开(公告)号：US5065263A

公开(公告)日：1991-11-12

申请号：US353334

申请日：1989-05-17

申请人： Shuichi Yoshida ,  Noriaki Wakabayashi ,  Toshio Inaji ,  Hiromi Onodera

发明人： Shuichi Yoshida ,  Noriaki Wakabayashi ,  Toshio Inaji ,  Hiromi Onodera

IPC分类号： G11B21/10

CPC分类号： G11B21/106

摘要： A position control system for a disk storage drive system which includes a data transducer for recording and playback of the information stored in a desired data track of an information storage disk having a plurality of data storage tracks thereon, includes: a driver unit for actuating the data transducer; a position encoder of detecting a variation in movement of the data transducer and for producing a current position signal thereof; a tracking error detector for producing a tracking error signal upon detecting a positional difference of the data transducer from the desired data track; a track deflection estimator for estimating a deflection of track resulting from either eccentricity or undulation of the data track and for generating a feed-forward signal based on the estimation, and a discrete-time control loop for controlling the driver unit in accordance with the tracking error signal. The discrete-time control loop includes a compensating position calculator for calculating a compensating position command signal from the tracking error signal and an interpolation calculator for generating an interpolation signal which is supplied to the driver unit through interpolation with the feed-forward signal and the compensating position command signal so that the tracking error between the data transducer and the data track can be minimized and the traceability can be improved.

摘要翻译： 一种用于盘存储驱动系统的位置控制系统，包括：数据传感器，用于记录和重放存储在其上具有多个数据存储轨道的信息存储盘的期望数据轨道中的信息，所述信息存储盘包括：驱动单元， 数据传感器; 位置编码器，用于检测数据换能器的移动变化并产生其当前位置信号; 跟踪误差检测器，用于在检测到数据换能器与期望数据轨迹的位置差异时产生跟踪误差信号; 轨道偏转估计器，用于估计由数据轨道的偏心或起伏引起的轨道的偏转并且用于基于估计产生前馈信号;以及离散时间控制回路，用于根据跟踪来控制驱动器单元 误差信号。 离散时间控制回路包括：补偿位置计算器，用于从跟踪误差信号计算补偿位置指令信号;以及内插计算器，用于生成内插信号，该内插信号通过前馈信号的内插提供给驱动单元， 使得数据传感器和数据轨道之间的跟踪误差可以最小化并且可追溯性得到提高。

公开(公告)号：US4725776A

公开(公告)日：1988-02-16

申请号：US695049

申请日：1985-01-25

申请人： Hiromi Onodera ,  Noriaki Wakabayashi ,  Yasushi Sugizaki

发明人： Hiromi Onodera ,  Noriaki Wakabayashi ,  Yasushi Sugizaki

IPC分类号： G01P3/488 ,  G01B7/14 ,  G01R33/02

CPC分类号： G01P3/488

摘要： A magnetic detector of the present invention employs magneto-resistive elements and detects magnetic teeth of an object to be detected, and more particularly, a constant DC magnetic field is supplied to the magneto-resistive elements in such a way so as to avoid a non-linear region of the DC magnetic field to permit the use of such elements in the region exhibiting good linearity. The present invention provides the DC magnetic field to the magneto-resistive elements by employing a simple structure wherein the magneto-resistive elements are arranged inclined relative to the magnetic field defined between a permanent magnet and the magnetic teeth. Furthermore, the magneto-resistive elements having two phases delayed by .pi./2 are used in a half-bridge so as to improve the stability, waveform distortion, etc. with respect to the temperature of the detected signal.

摘要翻译： 本发明的磁检测器采用磁阻元件并检测被检测物体的磁齿，更具体地说，以这样的方式将恒定的直流磁场提供给磁阻元件，以避免非磁性元件 线性区域，以允许在呈现良好线性的区域中使用这些元件。 本发明通过采用简单结构向磁阻元件提供DC磁场，其中磁阻元件相对于永磁体和磁齿之间限定的磁场倾斜布置。 此外，在半桥中使用具有延迟了π/ 2的两相的磁阻元件，以提高相对于检测信号的温度的稳定性，波形失真等。

公开(公告)号：US4507598A

公开(公告)日：1985-03-26

申请号：US486971

申请日：1983-04-20

申请人： Noriaki Wakabayashi ,  Kiichiro Yamada ,  Hiromi Onodera

发明人： Noriaki Wakabayashi ,  Kiichiro Yamada ,  Hiromi Onodera

IPC分类号： H02P25/06 ,  G05B19/25 ,  H02K41/03 ,  G05B11/00

CPC分类号： G05B19/251 ,  G05B2219/37296 ,  G05B2219/41337 ,  G05B2219/45189

摘要： A two-axis positioning system comprising three linear motors, two of which are spaced at a predetermined interval and disposed movably in the direction of a first axis and another one of which is supported by two motors and made movable in the direction of a second axis, the three motors having position control loops independent of or related with each other corresponding to input movement command signals in the directions of the first and second axes.

摘要翻译： 一种双轴定位系统，包括三个线性电动机，其中两个线性电动机以预定间隔间隔开，并且沿第一轴线方向可移动地设置，另一个由两个电动机支撑并且可沿第二轴线方向移动 三个电动机具有与第一和第二轴方向上的输入运动指令信号相对应或相互关联的位置控制回路。

公开(公告)号：US4504750A

公开(公告)日：1985-03-12

申请号：US486965

申请日：1983-04-20

申请人： Hiromi Onodera ,  Noriaki Wakabayashi ,  Kiichiro Yamada ,  Yasushi Sugizaki

发明人： Hiromi Onodera ,  Noriaki Wakabayashi ,  Kiichiro Yamada ,  Yasushi Sugizaki

IPC分类号： H02K41/03 ,  H02K33/02

CPC分类号： H02K41/033 ,  H02K2213/03

摘要： A linear motor comprising; a pair of iron cores with plural magnetic teeth groups in which phase is shifted 180 degrees in the direction of its movement, a movable element in which groups of magnetic teeth on the same iron core have the same phases, plural rows of magnetic teeth positioned crossing the direction of the movable element's movement at right angles and a fixed element in which mutual phase is shifted as much as n/m.multidot.P (m is the number of phases of the linear motor, n is an integer where m>n and P is the pitch of magnetic teeth).

摘要翻译： 一种线性电动机，包括： 一对铁心，具有多个磁齿组，其中相位沿其运动方向偏移180度;可移动元件，其中同一铁芯上的磁齿组具有相同的相位，多排磁性齿位于交叉位置 可移动元件的运动方向为直角运动，而固定元件的相位偏移量为n / m×P（m为直线电动机的相数），n为整数，其中m> n，P为 磁齿的间距）。