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公开(公告)号：US4403161A
公开(公告)日：1983-09-06
申请号：US188098
申请日：1980-09-17
CPC分类号： H02K1/276
摘要： A permanent magnet rotor used in a synchronous motor or the like comprising a shaft, an iron core and permanent magnets is disclosed. Each of the permanent magnets which is mounted on the hollow rotor core has an arc shape, and the radial center of the arc shape is positioned on the axis of the shaft or at a point slightly deviated from the shaft axis.
摘要翻译： 公开了一种用于包括轴，铁芯和永磁体的同步电动机等中的永磁转子。 安装在中空转子铁芯上的每个永磁体具有弧形，并且弧形的径向中心位于轴的轴线上或者位于稍微偏离轴线的点上。
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公开(公告)号：US4144469A
公开(公告)日：1979-03-13
申请号：US822788
申请日：1977-08-08
申请人： Kunio Miyashita , Hironori Okuda , Seizi Yamashita , Shoji Tanabe
发明人： Kunio Miyashita , Hironori Okuda , Seizi Yamashita , Shoji Tanabe
摘要： A rotor of a permanent magnet type synchronous motor comprises a rotary shaft, a rotary supported by the rotary shaft and including an alternate disposition of a core section in the form of a lamination of a magnetic material which is stacked in the axial direction and a reinforcement section of a non-magnetic material and cavities axially formed in the core and reinforcement sections by passing therethrough, permanent magnets received in the cavities, and a strap interposed at least between the radial outer surface of respective permanent magnets and the opposing inner wall of the cavity, whereby distribution of pressures resulting from a centrifugal force due to the rotation of the rotor, which pressures are imparted on the inner wall of the cavity by the outer surface of the permanent magnet, is uniformed or shared by the strap, thereby preventing the permanent magnet from being fractured.
摘要翻译： 永磁式同步电动机的转子包括旋转轴，由旋转轴支撑的旋转体，并且包括以沿轴向堆叠的磁性材料层压形式的芯部的交替配置，以及加强件 非磁性材料的截面和通过其中穿过其中轴向形成在芯部和加强部分中的空腔，容纳在空腔中的永久磁体以及至少插入在相应永磁体的径向外表面和相应的永磁体的相对内壁之间的带 由此由于转子的转动而产生的离心力的分布由该永久磁铁的外表面赋予空腔的内壁上的压力被带子均匀或共享，由此防止了 永磁体断裂。
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公开(公告)号：US4857786A
公开(公告)日：1989-08-15
申请号：US178213
申请日：1988-04-06
申请人： Hideki Nihei , Kunio Miyashita , Kouichi Saitoh , Seizi Yamashita
发明人： Hideki Nihei , Kunio Miyashita , Kouichi Saitoh , Seizi Yamashita
摘要： The present invention provides a large-thrust stepping motor improved in thrust constant by provision of slots at equal intervals between adjacent N and S poles of a permanent magnet disposed on a movable member of the motor or by division of the winding for each phase of a stator of the motor into two or more sections to pass currents independently through the divisional sections in accordance with the speed of the motor.Further, the invention provides a large-thrust stepping motor using a field magnet having large magnetomotive force, the field magnet being formed by combination of a magnet substrate and permanent magnets independent from the magnet substrate.
摘要翻译： 本发明提供了一种大推力步进电动机，其通过在设置在电动机的可移动部件上的永久磁铁的相邻N极和S极之间以相等的间隔设置槽，或通过将绕组的相位分开 电机的定子分成两个或多个部分，以根据电机的速度独立地通过分割部分传递电流。 此外，本发明提供一种使用具有大磁动势的场磁体的大推力步进电机，所述磁场磁体通过磁体基板和与所述磁体基板无关的永磁体的组合而形成。
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4.再颁专利Apparatus magnetically detecting position or speed of moving body utilizing bridge circuit with series connected MR elements 失效利用具有串联连接MR元件的桥式电路，磁力检测移动体的位置或速度
公开(公告)号：USRE34443E
公开(公告)日：1993-11-16
申请号：US643124
申请日：1991-01-18
CPC分类号： G01D5/145 , G01D5/24438 , G01D5/24476 , G01D5/2451 , G01P3/487
摘要： Magnetic poles are provided continuously with a pitch .lambda. on the peripheral portion of a drum rotated in accordance with a movement of a moving body. A magnetic sensor is provided in opposition to these poles. The sensor is formed of two magnetoresistive element pairs which are spaced from each other at .lambda./6, and the two elements in each pair are arranged in positions spaced from each other at .lambda./2. The two elements in each pair are connected in series to form a bridge circuit. The signals obtained from the nodes of the series-connected elements in the two element pairs are differentially amplified so that third harmonic wave components are eliminated, and a signal having no distortion and representative of the position or speed of the moving body can be obtained.
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公开(公告)号：US4874053A
公开(公告)日：1989-10-17
申请号：US209998
申请日：1988-06-22
申请人： Hiroshi Kimura , Shotaro Naito , Kunio Miyashita , Yasuo Noto , Noboru Sugiura , Tadashi Takahashi , Hirohisa Yamamura , Seizi Yamashita , Syooichi Kawamata , Fumio Tajima , Shigeru Horikoshi
发明人： Hiroshi Kimura , Shotaro Naito , Kunio Miyashita , Yasuo Noto , Noboru Sugiura , Tadashi Takahashi , Hirohisa Yamamura , Seizi Yamashita , Syooichi Kawamata , Fumio Tajima , Shigeru Horikoshi
CPC分类号： B62D6/10 , G01L3/104 , G01L3/109 , G01L5/221 , B60G2204/11
摘要： A device for detecting a load torque using angle detectors fitted with a certain spacing on a shaft which is rotated by a drive source and on the basis of a relative angular difference of angles detected by the angle detectors. The device includes two rotary drums or discs fitted with a certain spacing on the drive side and load side of the shaft, with a plurality of magnetic poles for generating magnetic signals being formed on the surface thereof, and a magnetic sensor disposed to confront the surface of the rotary drums or discs, with magnetic resistance effect elements which vary in internal resistance in response to the magnetism of the magnetic poles being provided thereon. The amount of torsion created by the load on the load side of the rotary shaft is measured as a phase difference of outputs of the magnetic sensor, and the torque is detected in terms of the angular difference between the magnetic drums or discs. The device is operative to detect a torque in both storage and rotation, and capable of detection within a period of magnetic signal, whereby high-accuracy, high-resolution torque detection is made possible.
摘要翻译： 一种用于使用角度检测器检测负载转矩的装置，所述角度检测器在由驱动源旋转的轴上并且基于由角度检测器检测的角度的相对角度差异在轴上具有一定间隔。 该装置包括两个旋转鼓或盘，其在驱动侧和负载侧安装一定间隔，在其表面上形成有用于产生磁信号的多个磁极和设置成面对表面的磁传感器 具有响应于设置在其上的磁极的磁性而在内阻中变化的磁阻效应元件。 由旋转轴的负载侧上的负载产生的扭转量作为磁传感器的输出的相位差被测量，并且根据磁鼓或盘之间的角度差来检测转矩。 该装置用于检测存储和旋转两者中的转矩，并且能够在磁信号的一段时间内进行检测，由此可以实现高精度，高分辨率的扭矩检测。
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公开(公告)号：US4454438A
公开(公告)日：1984-06-12
申请号：US969180
申请日：1978-12-13
申请人： Seizi Yamashita , Kunio Miyashita , Syoji Tanabe , Tadao Shimotsu
发明人： Seizi Yamashita , Kunio Miyashita , Syoji Tanabe , Tadao Shimotsu
摘要： A synchronized induction motor comprises a stator including a cylindrical armature core having an armature winding wound thereon for generating a rotating magnetic field, a cylindrical housing for housing the stator therein, end brackets mounted at opposite open ends of the housing and having a bearing mounted at a center portion thereof a rotor shaft concentrically arranged in the stator axially of the armature core and rotatably supported by bearings, a rotor core mounted concentrically with the rotor shaft on the rotor shaft and magnetically coupled to the armature core through an air gap, end plates mounted to sandwich the rotor core, starting secondary conductors arranged axially of the rotor shaft in the vicinity of an outer circumference of the rotor core and adapted to cooperate with the stator which is held by the end plate to form an induction motor, end rings for shorting the ends of the secondary conductors on the end plates, balance rings mounted on the rotor shaft in the vicinity of the bearings, sumarium-cobalt split-type permanent magnets arranged around the outer circumference of the rotor core axially of the rotor shaft, and an epoxy fiber impregnated glass fiber tape or stainless steel tape for holding the permanent magnets on the rotor core. The permanent magnets are magnetized after they have been mounted on the rotor core.
摘要翻译： 同步感应电动机包括定子，其包括圆柱形电枢铁芯，其中缠绕有用于产生旋转磁场的电枢绕组，用于将定子容纳在其中的圆柱形壳体，安装在壳体的相对开口端的端部支架， 其中心部分是同轴地布置在电枢铁心的定子轴向并由轴承可转动地支撑的转子轴;转子芯，其与转子轴同心地安装在转子轴上，并通过气隙磁耦合到电枢铁心;端板 安装成夹持转子芯，将转子轴的轴向布置在转子芯的外周附近并适于与由端板保持的定子协作以形成感应电动机的端环，用于 使端板上的次级导体的端部短路，安装在转子轴上的平衡环 轴承附近的绕转子轴的外周设置的三角钴钴分型永久磁铁，以及用于将永磁体保持在转子铁芯上的环氧树脂浸渍玻璃纤维带或不锈钢带。 永久磁铁在安装在转子铁心上后被磁化。
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公开(公告)号：US4336475A
公开(公告)日：1982-06-22
申请号：US66767
申请日：1979-08-14
摘要： The present invention relates to a slotless, brushless motor comprising a permanent magnet rotor rotationary together with a shaft and a stationary armature coil disposed in opposition to the rotor.The armature coil comprises a coil portion concentrically wound, an adjacent coil portion formed in sequence from the coil portion and concentrically wound, a coil performed on a plane by a plurality of the coil portions, N coils (N is integer) laid on each other and different in a phase respectively, sheets disposed between said N coils and a supporting member supporting the coils and the sheets made integral.
摘要翻译： 本发明涉及一种无槽无刷电动机，其包括与轴一起旋转的永磁体转子和与转子相对设置的固定电枢线圈。 电枢线圈包括同心缠绕的线圈部分，从线圈部分顺序形成并同心缠绕的相邻线圈部分，由多个线圈部分在平面上执行的线圈，彼此相邻的N个线圈（N是整数） 并且分别具有不同的相位，设置在所述N个线圈之间的片材和支撑所述线圈的支撑部件和一体化的片材。
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公开(公告)号：US4678971A
公开(公告)日：1987-07-07
申请号：US817623
申请日：1986-01-10
CPC分类号： H02K41/031
摘要： A linear motor comprises a first magnetic pole having a plurality of uneven magnetic pole teeth of magnetic material arranged longitudinally at predetermined regular intervals of length, and a second magnetic pole having a yoke and plurality of uneven magnetic pole teeth made of magnetic material opposed to the first magnetic pole with a slight gap and a coil wound on each magnetic pole tooth and the permanent magnets, in which the relative position of the first and second magnetic poles in the longitudinal direction can be varied. The longitudinal lengths of the protruded portion of the second magnetic pole are substantially equal with each other. The longitudinal length of the recessed portion of the second magnetic pole is set to about one-third of the longitudinal length of the protruded portion of the first magnetic pole. The number of the protruded portions of the first magnetic pole is set to be a multiple of two.
摘要翻译： 线性电动机包括：第一磁极，具有多个以规定的长度方向纵向布置的磁性材料的不均匀的磁极齿;以及具有磁轭的第二磁极和由磁性材料相对的磁性材料构成的多个不均匀的磁极齿 第一磁极具有微小的间隙，线圈缠绕在每个磁极齿和永磁体上，其中第一和第二磁极在纵向上的相对位置可以改变。 第二磁极的突出部分的纵向长度基本相等。 第二磁极的凹部的纵向长度被设定为第一磁极的突出部的纵向长度的大约三分之一。 第一磁极的突出部的数量被设定为2的倍数。
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公开(公告)号：US5101148A
公开(公告)日：1992-03-31
申请号：US511925
申请日：1990-04-16
申请人： Seizi Yamashita , Kunio Miyashita , Hironori Okuda
发明人： Seizi Yamashita , Kunio Miyashita , Hironori Okuda
CPC分类号： G05B19/21 , H02P23/186 , G05B2219/41068 , G05B2219/41358 , G05B2219/42318
摘要： An actuator in which, when the reduction ratio of a reduction gear unit is 1/N, the number of pulses of a second encoder is set to be equal to N times (the number of pulses of a first encoder), whereby a pulse processing circuit for detecting a torsion angle is made remarkably simple.
摘要翻译： 一种致动器，其中当减速装置的减速比为1 / N时，将第二编码器的脉冲数设定为N倍（第一编码器的脉冲数），从而进行脉冲处理 用于检测扭转角的电路非常简单。
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10.发明授权Apparatus for magnetically detecting position or speed or moving body utilizing bridge circuit with series connected MR elements 失效利用具有串联连接的MR元件的桥接电路来磁性检测位置或速度或移动体的装置
公开(公告)号：US4818939A
公开(公告)日：1989-04-04
申请号：US19545
申请日：1987-02-26
IPC分类号： G01B7/00 , G01D5/14 , G01D5/16 , G01D5/18 , G01D5/244 , G01D5/245 , G01P3/487 , G01B7/14 , G01P3/42
CPC分类号： G01D5/145 , G01D5/24438 , G01D5/24476 , G01D5/2451 , G01P3/487
摘要： Magnetic poles are provided continuously with a pitch .lambda. on the peripheral portion of a drum rotated in accordance with a movement of a moving body. A magnetic sensor is provided in opposition to these poles. The sensor is formed of two magnetoresistive element pairs which are spaced from each other at .lambda./6, and the two elements in each pair are arranged in positions spaced from each other at .lambda./2. The two elements in each pair are connected in series to form a bridge circuit. The signals obtained from the nodes of the series-connected elements in the two element pairs are differentially amplified so that third harmonic wave components are eliminated, and a signal having no distortion and representative of the position or speed of the moving body can be obtained.
摘要翻译： 在根据移动体的运动旋转的滚筒的周边部分上连续地设有螺距λ的磁极。 提供与这些极相对的磁传感器。 传感器由两个磁阻元件对形成，它们以λ/ 6彼此间隔开，并且每对中的两个元件被布置在以λ/ 2彼此间隔开的位置。 每对中的两个元件串联连接以形成桥接电路。 从两个元件对中的串联元件的节点获得的信号被差分放大，从而消除了三次谐波分量，并且可以获得没有失真并且代表移动体的位置或速度的信号。
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