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31. 发明授权

US06995945B2 Head positioning system, disk drive apparatus using the same, and head positioning method 失效
标题翻译：头定位系统，使用相同的磁盘驱动装置和头定位方法
公开(公告)号：US06995945B2
公开(公告)日：2006-02-07
申请号：US10694445
申请日：2003-10-28
申请人： Hiroshi Kohso , Toshio Inaji
发明人： Hiroshi Kohso , Toshio Inaji
IPC分类号： G11B5/596
CPC分类号： G11B5/5526
摘要： A head positioning system includes: a positioning mechanism section 1 for positioning a head 12; a position controller 2 for detecting a head position signal x to output a position control signal Ux; a velocity detector 3 for detecting the relative velocity of the head 12 with respect to a disk 7 based on the head position signal x; a counter electromotive voltage detector 4 for outputting an estimated head velocity signal Ve2 that is obtained by estimating the absolute velocity of the head 12 based on a counter electromotive voltage signal Vs of an actuator 50; an estimated velocity corrector 5 for correcting an estimation error of the estimated head velocity signal Ve2 based on a velocity signal detected from the head position signal x so as to output a corrected estimated velocity signal Ve2′; and an estimation controller 6 for outputting a velocity control signal Uv based on the corrected estimated velocity signal Ve2′, wherein the actuator 50 is controlled by a control amount signal U that is obtained by adding at least the velocity control signal Uv to the position control signal Ux.
摘要翻译：头部定位系统包括：用于定位头部12的定位机构部分1; 用于检测头位置信号x以输出位置控制信号U X的位置控制器2; 速度检测器3，用于基于头位置信号x检测头部12相对于盘7的相对速度; 反电动势电压检测器4，用于输出通过基于反电动势电压信号V N估计头部12的绝对速度而获得的估计头部速度信号V e2，致动器50; 估计速度校正器5，用于基于从头部位置信号x检测到的速度信号来校正估计的头部速度信号V e2的估计误差，以输出校正的估计速度信号V SUB， e2 以及估计控制器6，用于基于修正后的估计速度信号V e2'输出速度控制信号U≠V，其中致动器50由控制量信号U 这是通过将至少速度控制信号U V添加到位置控制信号U SUB而获得的。

32. 发明授权

US5467004A Motor speed control apparatus for keeping the speed of the motor fixed in the presence of a disturbance torque 失效
标题翻译：用于在存在干扰转矩的情况下保持马达的速度固定的马达速度控制装置
公开(公告)号：US5467004A
公开(公告)日：1995-11-14
申请号：US153102
申请日：1993-11-17
申请人： Keisuke Matsuo , Toshio Inaji
发明人： Keisuke Matsuo , Toshio Inaji
IPC分类号： G11B15/46 , H02P23/00 , H02K29/10
CPC分类号： G11B15/46 , H02P23/16 , H02P23/186
摘要： A motor control apparatus controls a motor speed according to a detected period of a frequency signal whose frequency is in proportion to the motor speed and drives the motor so as to keep its speed fixed according to a drive signal. The motor control apparatus includes a disturbance torque observer receptive to the drive signal and the detected period which produces a estimated disturbance signal corresponding to a conversion of a disturbance torque into an electrical signal. A comparator produces a period error signal which is a difference between the detected period and a desired period. An arithmetic unit produces the control signal in accordance with the period error signM. A torque correcting unit produces the drive signal by adding the estimated disturbance signal to the control signal.
摘要翻译：电动机控制装置根据频率与电动机速度成比例的频率信号的检测周期来控制电动机速度，并驱动电动机，以根据驱动信号保持其速度固定。马达控制装置包括接受驱动信号的干扰转矩观测器和检测到的周期，该周期产生与干扰转矩转换为电信号相对应的估计干扰信号。比较器产生周期误差信号，该误差信号是检测周期与期望周期之间的差值。算术单元根据周期误差信号产生控制信号。扭矩校正单元通过将估计的干扰信号加到控制信号上来产生驱动信号。

33. 发明授权

US4999558A Position control system 失效
标题翻译：位置控制系统
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.

34. 发明授权

US4954905A Data transducer position control system for disk storage drive system 失效
标题翻译：磁盘存储驱动系统数据传感器位置控制系统
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.

35. 发明授权

US4695907A Rotary head deflection apparatus 失效
标题翻译：旋转头偏转装置
公开(公告)号：US4695907A
公开(公告)日：1987-09-22
申请号：US671583
申请日：1984-11-15
申请人： Toshio Inaji , Hiroshi Okamoto , Nobuyoshi Yokobori
发明人： Toshio Inaji , Hiroshi Okamoto , Nobuyoshi Yokobori
IPC分类号： G11B5/584 , G11B5/588 , G11B21/04
CPC分类号： G11B5/588
摘要： A rotary head deflection apparatus for allowing magnetic heads to properly scan signal tracks recorded on a magnetic tape, and used for a helical scan system video tape recorder, which is constituted of driving coils wound onto a stator and movable members carrying magnetic heads and magnets, so that the driving coils are energized to enable the magnetic heads to be displaced in the direction of the axis of rotation of the rotary member.
摘要翻译：一种旋转磁头偏转装置，用于允许磁头适当地扫描记录在磁带上的信号轨道，并用于由缠绕在定子上的驱动线圈和承载磁头和磁体的可移动部件构成的螺旋扫描系统磁带录像机，使得驱动线圈被通电以使得磁头能够沿着旋转构件的旋转轴线的方向移位。

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