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1. 发明授权

US5245232A Linear actuator 失效
标题翻译：线性执行器
公开(公告)号：US5245232A
公开(公告)日：1993-09-14
申请号：US844780
申请日：1992-03-02
申请人： Hideki Nihei , Syooichi Kawamata , Hideaki Horie , Shigeki Morinaga , Nobuyoshi Mutoh
发明人： Hideki Nihei , Syooichi Kawamata , Hideaki Horie , Shigeki Morinaga , Nobuyoshi Mutoh
IPC分类号： G11B21/02 , G11B7/085 , G11B21/08 , H02K41/02 , H02K41/03 , H02P6/00
CPC分类号： H02K41/031 , G11B21/083 , G11B7/08582 , H02P6/006 , H02P6/34
摘要： A linear actuator for e.g. a disk drive has a fixed member and a movable member. One of those members carries at least one track of permanent magnets extending in the direction in which the movable member is to move, with adjacent permanent magnets having alternate magnetic polarity. The other member has first and second drive parts, each having at least one pair of opposing sets of teeth. The moveable member or each track passes between those teeth. Each pair of teeth is associated with a corresponding drive coil giving the teeth a magnetic polarity so that there is a magnetic alignment between a polarity of the teeth and the permanent magnets. The drive parts are arranged so that, for any given relative position of the first and second members, the magnetic alignment of the teeth of one drive part is out of phase with the magnetic alignment of the teeth of the other part. In order to ensure that the magnetic alignments are out of phase, there may be a physical displacement between the teeth of the two drive parts. This displacement may be (m.+-.1/2).multidot.T.sub.p, where m is an integer and T.sub.p is the teeth pitch. This gives a phase displacement of 180.degree.. Alternatively, the drive parts may be aligned, and two tracks of permanent magnets be provided with the magnets thereof having opposite polarity for a given track position, or the drive current to the drive coils may be controlled to be out of phase.

2. 发明授权

US5453972A Optical disk apparatus 失效
标题翻译：光盘装置
公开(公告)号：US5453972A
公开(公告)日：1995-09-26
申请号：US10019
申请日：1993-01-27
申请人： Hiroshi Kanazawa , Fumio Tajima , Ryoichi Naganuma , Nobuyoshi Mutoh , Tadashi Takahashi , Hideki Nihei , Shunichi Tanae , Hideaki Horie , Syooichi Kawamata
发明人： Hiroshi Kanazawa , Fumio Tajima , Ryoichi Naganuma , Nobuyoshi Mutoh , Tadashi Takahashi , Hideki Nihei , Shunichi Tanae , Hideaki Horie , Syooichi Kawamata
IPC分类号： G11B7/085 , G11B17/028 , G11B17/34 , G11B19/04 , G11B19/20 , G11B19/28 , G11B25/04 , G11B33/08 , H02K21/14 , H02K21/24 , G11B7/12
CPC分类号： G11B17/0282 , G11B17/028 , G11B17/34 , G11B19/04 , G11B19/20 , G11B19/28 , G11B25/043 , G11B33/08 , G11B7/08505 , G11B7/08582 , H02K21/14 , H02K21/24
摘要： A portable-type disk apparatus for a 3.5-inch or less optical disk implemented in a thin, light-weight and miniaturized structure having a vibration-withstanding capability. An optical head assembly is disposed stationarily while an optical disk and a spindle motor for rotating the optical disk are disposed movably in a diametrical direction of the optical disk. The spindle motor is constituted by a brushless motor of a substantially semi-circular form in cross section and having a laterally truncated portion. The optical head assembly including an optical head and a laser circuit is disposed at the side of the laterally truncated portion.
摘要翻译：一种用于3.5英寸或更小的光盘的便携式盘装置，其实现为具有耐振动能力的薄，轻重量和小型化结构。一个光头组件被放置在一个光盘和一个用于旋转光盘的主轴电动机的位置上，可移动地设置在光盘的直径方向上。主轴电动机由横截面为大致半圆形的无刷电动机构成，具有横向截断部分。包括光学头和激光电路的光学头组件设置在横截面的一侧。

3. 发明授权

US5432644A Disk drive unit having motor components in a compact arrangement 失效
标题翻译：具有紧凑布置的电机部件的磁盘驱动单元
公开(公告)号：US5432644A
公开(公告)日：1995-07-11
申请号：US249659
申请日：1994-05-26
申请人： Fumio Tajima , Hiroshi Kanazawa , Hiroshi Katayama , Kazuo Ohnishi , Tadashi Takahashi , Nobuyoshi Mutoh , Shigeki Morinaga , Nobuyoshi Tsuboi , Hideki Nihei
发明人： Fumio Tajima , Hiroshi Kanazawa , Hiroshi Katayama , Kazuo Ohnishi , Tadashi Takahashi , Nobuyoshi Mutoh , Shigeki Morinaga , Nobuyoshi Tsuboi , Hideki Nihei
IPC分类号： G11B19/20 , G11B25/04 , H02K1/14 , H02K7/14 , H02K16/00 , H02K21/16 , H02K29/00 , H02K41/03 , G11B5/016
CPC分类号： G11B25/043 , G11B19/20 , H02K1/14 , H02K1/146 , H02K16/00 , H02K21/16 , H02K7/14 , H02K2201/15 , H02K41/03
摘要： A motor has a stator and a rotor, the stator having cores and drive coils which generate magnetic fields for rotating the rotor. The stator also has a yoke surrounding the rotor and the rotor is positioned such that it is closer to one part of the outer periphery of the yoke than another part of the outer periphery of the yoke. Such a motor is particularly suitable for use in a disk drive unit as a spindle motor for rotating the disk. Then an actuator for moving a head may be located adjacent the part of the outer periphery of the yoke which is closest to the rotor. This permits the head to approach closely the axis of rotation of the disk without the spindle motor interferring with the movement of the head. The continuous yoke prevents magnetic flux leakage from the spindle motor interferring with the actuator. The actuator may itself have a yoke integral with the yoke of the spindle motor, and/or other components in common.
摘要翻译：电动机具有定子和转子，定子具有产生用于旋转转子的磁场的磁芯和驱动线圈。定子还具有围绕转子的轭，并且转子被定位成使得其比轭的外周的另一部分更靠近轭的外周的一部分。这样的电动机特别适用于作为用于旋转盘的主轴电动机的盘驱动单元。然后，用于移动头部的致动器可以位于最靠近转子的轭的外周的部分附近。这允许头靠近盘的旋转轴线，而主轴马达干涉头部的运动。连续的轭防止主轴电机的磁通量泄漏与执行机构的干扰。致动器本身可以具有与主轴电动机的轭架成一体的轭和/或共同的其它部件。

4. 发明授权

US5175479A Moving body position control apparatus and signal reproducing apparatus 失效
标题翻译：移动体位置控制装置和信号重放装置
公开(公告)号：US5175479A
公开(公告)日：1992-12-29
申请号：US654194
申请日：1991-02-12
申请人： Fumio Tajima , Hiroshi Katayama , Taizou Miyazaki , Shigeki Morinaga , Nobuyoshi Mutoh , Seiichi Narushima
发明人： Fumio Tajima , Hiroshi Katayama , Taizou Miyazaki , Shigeki Morinaga , Nobuyoshi Mutoh , Seiichi Narushima
IPC分类号： G11B5/588 , G05B13/02 , G05B19/23 , G05D3/12 , G11B5/55 , G11B15/467 , H02P6/06 , H02P6/08 , H02P27/06
CPC分类号： G11B5/5508 , G05B13/024 , G05B19/231 , G05B19/234
摘要： There is provided position error computing means for sampling an error value between a position detecting signal derived from means for detecting the position of a moving body and a position command signal supplied from outside and for computing a position error value on the basis of two or more past values of said error values. There is also provided a position control apparatus in which the magnitude of a gain of a position control loop is changed according to the above described position error value. Further, there is also provided a signal reproducing apparatus or a magnetic signal reproducing apparatus using the above described position control.
摘要翻译：提供了一种位置误差计算装置，用于对从用于检测移动体的位置的装置和从外部提供的位置指令信号导出的位置检测信号之间的误差值进行采样，并且基于两个或更多个来计算位置误差值所述错误值的过去值。还提供了一种位置控制装置，其中位置控制环路的增益的大小根据上述位置误差值而改变。此外，还提供了使用上述位置控制的信号再现装置或磁信号再现装置。

5. 发明授权

US5298841A Apparatus for controlling the speed of a moving object 失效
标题翻译：用于控制移动物体的速度的装置
公开(公告)号：US5298841A
公开(公告)日：1994-03-29
申请号：US687239
申请日：1991-04-18
申请人： Hiroshi Katayama , Fumio Tajima , Taizo Miyazaki , Shigeki Morinaga , Nobuyoshi Mutoh , Seiichi Narushima , Yuji Sato , Toshio Nakamoto , Takashi Takahashi , Toshio Osada
发明人： Hiroshi Katayama , Fumio Tajima , Taizo Miyazaki , Shigeki Morinaga , Nobuyoshi Mutoh , Seiichi Narushima , Yuji Sato , Toshio Nakamoto , Takashi Takahashi , Toshio Osada
IPC分类号： H02P6/06 , H02P6/10 , H02P5/00
CPC分类号： H02P6/06 , H02P6/10 , Y10S388/907
摘要： A speed control apparatus in which for sampling features of a speed fluctuation and generating a speed fluctuation correcting signal, an arithmetic operation can be simplified and can be performed by an inexpensive arithmetic and operation unit, thus requiring no expensive arithmetic operation unit. The speed control apparatus is also capable of reducing torque ripples and speed fluctuations quickly even when the load of an object to be controlled is changed.
摘要翻译：一种速度控制装置，其中为了对速度波动的特征进行采样并产生速度波动校正信号，可以简化算术运算，并且可以由廉价的运算单元执行，从而不需要昂贵的算术运算单元。即使当要控制的物体的负载改变时，速度控制装置也能够快速地减小扭矩波动和速度波动。

6. 发明授权

US06999330B2 Power converter and system using the same 失效
标题翻译：电源转换器和系统使用相同
公开(公告)号：US06999330B2
公开(公告)日：2006-02-14
申请号：US10960291
申请日：2004-10-08
申请人： Nobuyoshi Mutoh
发明人： Nobuyoshi Mutoh
IPC分类号： H02M1/00
CPC分类号： H02M1/44 , H02M5/458 , H02M7/003 , H05K1/0216 , H05K1/0231
摘要： A second wiring layer 362 of a multilayer wiring board constituting a power converter is provided with a first positive side direct current wiring 311p and a second positive side direct current wiring 312p constituting a direct current bus 300p. The first positive side direct current wiring 311p and the second positive side direct current wiring 312p as well as a negative side direct current wiring are provided with a bent structure for making a transmission path length on one side in a direct current transmitting direction shorter than a transmission path length on other side thereof. Line widths of the first positive side direct current wiring 311p and the second positive side direct current wiring 312p are set to a width equal to or larger than a width by which a damping factor of a noise current in the direct current transmitting direction becomes substantially a constant value.
摘要翻译：构成功率转换器的多层布线板的第二布线层362设置有构成直流母线300p的第一正侧直流布线311p和第二正侧直流布线312p。第一正侧直流布线311p和第二正侧直流布线312p以及负侧直流布线设置有用于使直流传输方向上的一侧的传输路径长度变短的弯曲结构比其另一侧的传输路径长度。第一正侧直流用配线311p和第二正极侧直流用配线312 p的线宽度被设定为等于或大于直流传递方向上的噪声电流的阻尼系数变为基本上是恒定值。

7. 发明授权

US5650700A Electric vehicle torque controller 失效
标题翻译：电动车扭矩控制器
公开(公告)号：US5650700A
公开(公告)日：1997-07-22
申请号：US426116
申请日：1995-04-20
申请人： Nobuyoshi Mutoh , Taizou Miyazaki , Ryoso Masaki , Tsutomu Ohmae , Sanshiro Obara
发明人： Nobuyoshi Mutoh , Taizou Miyazaki , Ryoso Masaki , Tsutomu Ohmae , Sanshiro Obara
IPC分类号： B60L15/02 , H02P21/00 , H02P7/00
CPC分类号： B60L15/025 , H02P21/22 , Y02T10/643
摘要： An electric vehicle torque controller has a torque calculating unit and an actual torque detecting unit. The calculated torque is compared with the actual torque to generate a torque compensation value, which is converted to a torque current signal. The torque current signal is used to generate a slip frequency, which is added to an output of an angular speed detector and used to set a secondary magnetic flux value. A secondary magnetic flux signal is generated according to the secondary magnetic flux value and the torque current signal. A secondary magnetic flux estimating unit generates an estimated secondary magnetic flux value, which is used to determine the exciting current. Primary motor current is controlled in response to the exciting current, the torque current, motor speed and slip value.
摘要翻译：电动车辆转矩控制器具有转矩计算单元和实际转矩检测单元。将计算出的转矩与实际转矩进行比较，生成转矩补偿值，转矩补偿值转换为转矩电流信号。转矩电流信号用于产生转差频率，该转差频率被加到角速度检测器的输出端，并用于设定次级磁通量值。根据次级磁通值和转矩电流信号产生二次磁通信号。次级磁通估计单元产生用于确定励磁电流的估计二次磁通值。主电机电流根据励磁电流，转矩电流，电机转速和滑差值进行控制。

8. 发明授权

US5023538A PWM inverter apparatus for controlling rotating magnetic flux in a.c. motors 失效
标题翻译：用于控制直流电机中的旋转磁通量的PWM逆变器装置电机
公开(公告)号：US5023538A
公开(公告)日：1991-06-11
申请号：US380039
申请日：1989-07-14
申请人： Nobuyoshi Mutoh , Keijiro Sakai , Akiteru Ueda , Hiroshi Fujii
发明人： Nobuyoshi Mutoh , Keijiro Sakai , Akiteru Ueda , Hiroshi Fujii
IPC分类号： H02M7/48 , H02M7/529 , H02P21/00 , H02P21/14 , H02P27/04
CPC分类号： H02M7/529 , H02P21/141
摘要： A PWM inverter apparatus used for driving an a.c. motor, including an inverter having an output part connected to the a.c. motor and switching elements on-off controlled by a PWM signal. The inverter apparatus also includes a part for receiving, at an interval of a given sampling period, status command information specifying a desired status of a vector of a rotating magnetic flux in the a.c. motor; a part for predicting, on the basis of at least the status command information received at each sampling time, the status of the vector of the rotating magnetic flux which will be produced at a next sampling time; a part for calculating a difference vector between the status of the vector of the rotating magnetic flux specified by the status command information received at a present sampling time and the predicted status of the vector of the rotating magnetic flux which will be produced at a next sampling time; a part for synthesizing the difference vector using selected reference voltage vectors from among a plurality of predetermined reference voltage vectors; and a part for generating a PWM signal for controlling the switching elements of the inverter so as to produce the selected reference voltage vectors.

9. 发明授权

US5481168A Electric vehicle torque controller 失效
标题翻译：电动车扭矩控制器
公开(公告)号：US5481168A
公开(公告)日：1996-01-02
申请号：US187526
申请日：1994-01-28
申请人： Nobuyoshi Mutoh , Taizou Miyazaki , Ryoso Masaki , Tsutomu Ohmae , Sanshiro Obara
发明人： Nobuyoshi Mutoh , Taizou Miyazaki , Ryoso Masaki , Tsutomu Ohmae , Sanshiro Obara
IPC分类号： B60L15/02 , H02P21/00 , H02P7/00
CPC分类号： B60L15/025 , H02P21/22 , Y02T10/643
摘要： An electric vehicle torque controller has a torque calculating unit and an actuate torque detecting unit. The calculated torque signal is compared with the actual torque to generate a torque compensation value, which is converted to a torque current signal. The torque current signal is used to a slip frequency, which is added to the output of an angular speed detector and used to set a secondary magnetic flux value. A secondary magnetic flux signal is generated according to the secondary magnetic flux value and the torque current signal. A secondary magnetic flux estimating unit generates an estimated secondary magnetic flux value, which is used to determine the exciting current. Primary motor current is controlled in response to the exciting current, the torque current, motor speed and slip value.
摘要翻译：电动车辆转矩控制器具有转矩计算单元和致动转矩检测单元。将计算出的转矩信号与实际转矩进行比较，生成转矩补偿值，转矩补偿值被转换为转矩电流信号。转矩电流信号用于转差频率，该转差频率被加到角速度检测器的输出端，用于设定次级磁通量值。根据次级磁通值和转矩电流信号产生二次磁通信号。次级磁通估计单元产生用于确定励磁电流的估计二次磁通值。主电机电流根据励磁电流，转矩电流，电机转速和滑差值进行控制。

10. 发明授权

US4767976A Control system for PWM inverter 失效
标题翻译： PWM逆变器控制系统
公开(公告)号：US4767976A
公开(公告)日：1988-08-30
申请号：US37853
申请日：1987-04-13
申请人： Nobuyoshi Mutoh , Akiteru Ueda , Motonobu Hattori , Satoshi Ibori , Hideyuki Shimonabe , Kenji Nandoh
发明人： Nobuyoshi Mutoh , Akiteru Ueda , Motonobu Hattori , Satoshi Ibori , Hideyuki Shimonabe , Kenji Nandoh
IPC分类号： H02P27/06 , H02P21/08 , H02P27/04 , H02P27/08 , H02P5/40
CPC分类号： H02P27/08 , H02P27/047
摘要： A control system for controlling a PWM inverter so that the inverter drives an induction motor at a variable voltage and a variable frequency while keeping constant a ratio of the output voltage of the inverter to the output frequency thereof, is disclosed which includes current component detecting means for detecting an effective current corresponding to a load, from the input current of the induction motor, frequency setting means for setting the output frequency of the PWM inverter, flux setting means for setting the amount of magnetic flux generated in the induction motor, correcting-frequency calculating means for calculating a frequency correcting quantity proportional to the effective current, and correcting-flux calculating means for calculating a flux correcting quantity proportional to the effective current. In a case where the detected effective current is judged to be less than a predetermined value, the frequency correcting quantity is added to the set output frequency to obtain an output frequency command, and the sum of the flux correcting quantity and the set amount of magnetic flux is multiplied by the value of the output frequency command to obtain an output voltage command, for the purpose of controlling the operation of the PWM inverter on the basis of the output frequency command and the output voltage command.
摘要翻译：一种用于控制PWM逆变器的控制系统，使得逆变器以可变电压和可变频率驱动感应电动机，同时保持变频器的输出电压与其输出频率的比例恒定，其包括电流分量检测装置用于从感应电动机的输入电流检测与负载相对应的有效电流;频率设定装置，用于设定PWM逆变器的输出频率;磁通设定装置，用于设定感应电动机中产生的磁通量，频率计算装置，用于计算与有效电流成比例的频率校正量;以及校正磁通计算装置，用于计算与有效电流成比例的磁通校正量。在检测到的有效电流被判断为小于预定值的情况下，将频率校正量与设定的输出频率相加，得到输出频率指令，并且磁通校正量与设定的磁场量之和为了根据输出频率指令和输出电压指令来控制PWM逆变器的运行，磁通量乘以输出频率指令的值以获得输出电压指令。

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