公开(公告)号：US5369324A

公开(公告)日：1994-11-29

申请号：US92092

申请日：1993-07-16

申请人： Gustav Saether

发明人： Gustav Saether

IPC分类号： B60K7/00 ,  H02K1/14 ,  H02K29/08 ,  H02K29/12 ,  H02K37/12 ,  H02K37/00

CPC分类号： B60K7/0007 ,  H02K1/145 ,  H02K29/08 ,  H02K29/12 ,  H02K37/12 ,  B60K2007/0038 ,  B60K2007/0092

摘要： An electric motor consisting of an inside stator part and a rotor part placed outside and concentrically in relation to the stator part, has a high number of permanent magnets (13) on the inside of the rotor part. The magnetic fields from these permanent magnets interact with magnetic fields between flux-conducting lamella blocks (30, 35) engaging the coil cores (8) on the stator. The lamella blocks (30, 35) are T- and .GAMMA.-shaped with top beams (25, 27) pointing in directions parallel to the axis, and the top beams (25, 27) are positioned to provide substantially circumferentially directed magnetic fields in flux gaps (36) therebetween. The magnetic fields in the flux gaps (36) between the top beams (25, 27) are reversed in successive order, and under time control from an electronic regulator.

摘要翻译： 由内部定子部分和放置在外部并且相对于定子部分同心的转子部分组成的电动机在转子部分的内侧具有大量的永磁体（13）。 来自这些永磁体的磁场与在定子上的线圈芯（8）接合的磁通导片板块（30,35）之间的磁场相互作用。 薄板块（30,35）是T形和GAMMA形的，顶部梁（25,27）指向平行于轴线的方向，并且顶梁（25,27）被定位成提供基本上周向定向的磁场 其间的通量隙（36）。 顶梁（25,27）之间的通量隙（36）中的磁场依次顺序颠倒，并且在电子调节器的时间控制下。

公开(公告)号：US5262703A

公开(公告)日：1993-11-16

申请号：US874796

申请日：1992-04-28

申请人： Fritz Schmider ,  Thomas Von Der Heydt

发明人： Fritz Schmider ,  Thomas Von Der Heydt

IPC分类号： H02K5/24 ,  H02K7/09 ,  H02K29/06 ,  H02K29/08 ,  H02K29/12 ,  H02P6/06 ,  H02K29/14

CPC分类号： H02K29/08 ,  H02K29/06 ,  H02K29/12 ,  H02K5/24 ,  H02K7/09 ,  H02P6/06

摘要： A low noise brushless dc motor has a rotor with a permanent magnet and a stator with a bearing system mounting a shaft for rotating the rotor. The motor has an operating circuit that includes a tachometer winding connected to the base of a first transistor whose collector is in series with a first resistor. The other end of the tachometer winding is connected to the base of a second transistor whose collector is in series with a second resistor.

摘要翻译： 低噪声无刷直流电动机具有带永磁体的转子和具有安装用于使转子旋转的轴的轴承系统的定子。 电动机具有操作电路，其包括连接到集电极与第一电阻串联的第一晶体管的基极的转速计绕组。 转速计绕组的另一端连接到集电极与第二电阻串联的第二晶体管的基极。

公开(公告)号：US5227702A

公开(公告)日：1993-07-13

申请号：US756569

申请日：1991-09-19

申请人： Peter M. Nahirney

发明人： Peter M. Nahirney

IPC分类号： H02K29/06 ,  H02K29/12 ,  H02P6/08

CPC分类号： H02K29/12 ,  H02K29/06 ,  H02P6/08

摘要： A dual voltage direct current permanent magnet brushless motor operated by sequential and alternate pulses to two rows of stator coils radially and equally positioned in the stato assembly to interact with two rows of permanent magnets equally spaced on the rotor. All the permanent magnets in one row are poled opposite to all the permanent magnets in the other row and total one less than the number of stator coils in each row. The reversal of poles of one row of permanent magnets on the rotor, along with the equal and opposite voltage permits the back electromotive force from a de-energizing stator coil in the first row to feed energy to the next stator coil positioned on the opposite site of the rotor (and vice versa) which interact with the reverse poled permanent magnet to produce only useful torque. Additional energy will be drawn from the battery as required to maintain the speed and torque requirement of the motor. The pulse to each stator is controlled by individual photocell detectors or Hall effect devices. The arrangement and control of the stator coils also permits power generation in the braking mode. The dual equal and opposite drive voltage permits the use of identical solid state switching devices in each side of the circuitry as well as utilization of the lowest possible peak inverse voltage rated devices as a result of the connection used between the stator coils.

摘要翻译： 双电压直流永磁无刷电动机通过顺序和交替的脉冲操作，两排定子线圈径向均匀地定位在静压组件中，以与转子上等距间隔的两排永磁体相互作用。 一排中的所有永磁体与另一排中的所有永磁体相对极化，总共比每排中的定子线圈数少一个。 转子上的一排永磁体的极的反转以及相等和相反的电压允许来自第一排中的断电定子线圈的反电动势将能量馈送到位于相对位置上的下一个定子线圈 的转子（反之亦然），其与反向极化的永久磁铁相互作用，仅产生有用的转矩。 根据需要从电池抽取额外的能量，以保持电机的速度和转矩要求。 每个定子的脉冲由单独的光电池检测器或霍尔效应器件控制。 定子线圈的布置和控制也允许制动模式下的发电。 双重相等和相反的驱动电压允许在电路的每一侧使用相同的固态开关装置，以及由于定子线圈之间的连接而使用最低可能的峰值反向电压额定装置。

公开(公告)号：US5168190A

公开(公告)日：1992-12-01

申请号：US684929

申请日：1991-04-25

申请人： Itsuki Bahn

发明人： Itsuki Bahn

IPC分类号： H02K16/00 ,  H02K19/10 ,  H02K29/12

CPC分类号： H02K16/00 ,  H02K19/103 ,  H02K29/12

摘要： A reluctance-type motor in which two or more three-phase, half-wave reluctance-type motors are juxtaposed within an outer casing (42), the number of magnetic poles (16a, . . .) and salient poles per motor decreases. Accordingly, a long and narrow motor having a small diameter can be obtained. With a construction in which n number of three-phase, half-wave motors are juxtaposed, the output torque is multiplied by n. Further, by providing a phase difference of 120/n degrees for the output torque of each motor, the torque ripple can be made small and the characteristics at the start-up time become good. By feeding back the magnetic energy in an exciting coil to the D.C. power supply of the applied high voltage, the magnetic energy is extinguished rapidly to prevent a counter-torque from occurring, and a magnetic energy is stored rapidly by the applied high voltage to prevent a reduced torque from occurring. Alternatively, the stored magnetic energy of a de-energized exciting coil is prevented by a diode from flowing back to the D.C. power supply, and the large electromotive force at that time is utilized to make rapid the storage of the magnetic energy of the exciting coil to be energized next, thereby making the extinguishment and storage of the magnetic energy rapid to prevent a reduced torque and a counter-torque from occurring.

摘要翻译： PCT No.PCT / JP90 / 01090 Sec。 371日期：1991年4月25日 102（e）日期1991年4月25日PCT提交1990年8月28日PCT公布。 出版物WO91 / 03858 日期1991年3月21日。一种磁阻型电动机，其中两个或多个三相半波磁阻型电动机并联在外壳（42）内，磁极数（16a ...） 并且每个电机的极点减少。 因此，可以获得具有小直径的长而窄的电动机。 在n个三相半波马达并置的结构中，输出转矩乘以n。 此外，通过为每个电动机的输出转矩提供120度/ n度的相位差，可以使转矩波动小，并且启动时的特性变好。 通过将励磁线圈中的磁能反馈到所施加的高电压的直流电源，磁能迅速熄灭以防止发生反扭矩，并且通过施加的高电压快速地存储磁能，以防止 减少扭矩发生。 或者，通过二极管阻止去激励的励磁线圈的存储的磁能流回到直流电源，并且利用此时的大的电动势来快速地储存励磁线圈的磁能 接着被通电，从而快速消除和储存磁能，以防止发生减小的转矩和反扭矩。

公开(公告)号：US4985669A

公开(公告)日：1991-01-15

申请号：US379546

申请日：1989-07-13

申请人： Robert C. B. Smith

发明人： Robert C. B. Smith

IPC分类号： H02K29/12 ,  H02K37/14 ,  H02P8/00

CPC分类号： H02K29/12 ,  H02K37/14 ,  H02P8/00

摘要： A multi-phase stepper motor in which one or more salient sensor poles and corresponding pick-up windings are employed to sense the actual position of the rotor. The rotor is of annular configuration and includes a first set of nonsalient rotor poles around its outer periphery and a second set of nonsalient rotor poles around its inner periphery, with the outer rotor poles being in magnetic flux relationship with the motor's stator poles and the inner rotor poles being in magnetic flux relationship with the sensor poles. A cylindrical housing of magnetic material surrounds the motor. An energizing circuit is provided to apply successive direct current pulses to the stator windings of the motor, and the pick-up windings are connected in a feedback circuit to adjust the applied pulses in accordance with the desired position of the rotor.

摘要翻译： 一种多相步进电动机，其中使用一个或多个显着传感器极和相应的拾取绕组来感测转子的实际位置。 转子是环形构造，并且包括围绕其外周的第一组非转子极和围绕其内周的第二组非转子极，外转子极与电动机的定子极和内部 转子极与传感器极磁通关系。 磁性材料的圆柱形壳体围绕电动机。 提供通电电路以将连续的直流脉冲施加到电动机的定子绕组，并且拾波绕组连接在反馈电路中，以根据转子的期望位置来调节所施加的脉冲。

公开(公告)号：US4870358A

公开(公告)日：1989-09-26

申请号：US66458

申请日：1987-06-26

申请人： Christian Glaize ,  Guy Lemarquand

发明人： Christian Glaize ,  Guy Lemarquand

IPC分类号： G01B7/30 ,  B25J19/02 ,  G01B7/00 ,  G01D5/20 ,  G01D5/242 ,  H02K29/12

CPC分类号： H02K29/12 ,  B25J19/027 ,  G01D5/242

摘要： An angular position sensor for determining the relative angular position of two relatively rotatable ferromagnetic coaxial components, such as a rotor and stator. The components have the same number of regularly distributed teeth and the teeth in one component are separated by an air gap from the teeth in the other component. A plurality of coils are connected in series with each other and are disposed around the teeth in one of the components and correspond in number to the number of associated teeth. An electric excitation signal having a measurable constant electrical characteristic is fed to the plurality of coils from a source. The characteristic is modulatable in response to variations in the magnetic reluctance of the air gap effected by changes in the relative angular position between the two components. Electronic circuitry is connected to coils for measuring the modulation of the characteristics to determine the relative angular position of the components. In angular position determination apparatus comprising a plurality of angular position sensors, mechanical connections are provided between the rotors on the one hand and the stators on the other. The angular displacement between the rotor and stator teeth differs for each sensor, the difference generally being a multiple of the quotient of 2.pi. by the number of teeth and the number of sensors. The sensor is well adapted for use in the robotics field.

摘要翻译： 用于确定两个相对旋转的铁磁同轴部件（例如转子和定子）的相对角位置的角位置传感器。 这些部件具有相同数量的规则分布的齿，并且一个部件中的齿通过与另一部件中的齿的气隙分开。 多个线圈彼此串联连接，并且在其中一个部件中围绕齿配置并且数量对应于相关联的齿数。 具有可测量的恒定电特性的电激励信号从源馈送到多个线圈。 该特性可以响应于由两个部件之间的相对角位置的变化而产生的气隙的磁阻的变化而可调制。 电子电路连接到用于测量特性调制的线圈，以确定组件的相对角位置。 在包括多个角位置传感器的角位置确定装置中，一方面在转子之间提供机械连接，另一方面提供定子。 对于每个传感器，转子和定子齿之间的角位移不同，差异通常是齿数和传感器数量的2 pi乘数的倍数。 传感器适用于机器人领域。

公开(公告)号：US4712035A

公开(公告)日：1987-12-08

申请号：US796779

申请日：1985-11-12

申请人： Franklin L. Forbes ,  Harold B. Harms

发明人： Franklin L. Forbes ,  Harold B. Harms

IPC分类号： H02K29/00 ,  D06F33/02 ,  D06F37/30 ,  H02K1/14 ,  H02K3/28 ,  H02K7/14 ,  H02K15/02 ,  H02K21/22 ,  H02K29/06 ,  H02K29/12 ,  H02P6/08

CPC分类号： H02P6/181 ,  D06F37/304 ,  H02K1/148 ,  H02K15/022 ,  H02K29/06 ,  H02K3/28 ,  H02K7/14 ,  H02P6/085 ,  H02K21/22 ,  H02K29/12 ,  Y10T29/49009

摘要： An inside-out salient pole core for a dynamo-electric machine. The core has an edgewise wound yoke including an edgewise and helically wound strip of generally thin ferromagnetic material having at least one edge defining an outer circumferential surface on the edgewise wound yoke and extending generally axially thereacross. A set of salient pole pieces is secured to the edgewise wound core at least generally adjacent its outer circumferential surface, and extends generally outwardly from the outer circumferential surface about a set of preselected pitch axes, respectively.

摘要翻译： 用于发电机的内外凸极芯。 芯具有沿边缘绕线轭，其包括通常薄的铁磁材料的沿边和螺旋形缠绕的条带，其具有至少一个边缘，该边缘限定沿边缘绕线轭的外周表面，并且大致轴向延伸。 一组凸极片至少大体上邻近其外圆周表面固定到沿边卷绕的芯上，并且大体上从外圆周表面大致向外围绕一组预选的俯仰轴线延伸。

公开(公告)号：US4701653A

公开(公告)日：1987-10-20

申请号：US812273

申请日：1985-12-02

申请人： Alfred Merkle ,  Georg Moosmann ,  Rolf Muller

发明人： Alfred Merkle ,  Georg Moosmann ,  Rolf Muller

IPC分类号： H02K7/106 ,  G11B19/20 ,  H02K1/14 ,  H02K7/102 ,  H02K11/00 ,  H02K29/00 ,  H02K29/08 ,  H02K29/12

CPC分类号： H02K29/12 ,  G11B19/2009 ,  H02K1/146 ,  H02K1/148 ,  H02K11/01 ,  H02K11/21 ,  H02K11/215 ,  H02K11/225 ,  H02K11/33 ,  H02K11/40 ,  H02K29/08 ,  H02K7/1025 ,  Y10T29/49012

摘要： A drive unit for direct drive of an information-storage disk comprises a collectorless D.C. external-rotor motor having a permanent-magnet rotor magnet arrangement of considerably reduced axial length. Electrostatic charge is removed from the rotor shaft by a metallic spring element which engages the shaft periphery from within the interior of the rotor housing. An electromagnetic braking arrangement is located interiorly of the housing. The packet of stator plates for the stator has an axial length shorter than that of the rotor magnet arrangement, but is provided at its axial end faces with skirted-rim flux-conducting elements whose peripheral skirt portions form useful-air-gap extensions in cooperation with the rotor magnet arrangement. The stator plate packet and associated skirted-rim flux-conducting elements may have cut-outs defining salient-pole structure; the skirt portions of the flux-conducting elements are provided with cut-outs at their leading ends serving to produce a reluctance torque component which, during rotor rotation, is shifted in time relative to the electromagnetic torque component attributable to the salient-pole configuration. The portion of the rotor structure which supports an information-storage disk has an annular recess accommodating a disk-holding magnet whose upper surface is slightly recessed relative to an annular magnetically conductive disk-supporting ridge of the rotor, the cross-sectional shape of the ridge being such as to establish a magnetic disk-holding force of exactly predetermined character despite tolerance-range variation of the coercive force of the holding magnet employed.

摘要翻译： 用于直接驱动信息存储盘的驱动单元包括无集电极D.C.外转子电动机，其具有显着减小的轴向长度的永磁转子磁体布置。 静电荷通过金属弹簧元件从转子轴上移除，该金属弹簧元件从转子壳体的内部接合轴周边。 电磁制动装置位于外壳的内部。 用于定子的定子板的分组的轴向长度短于转子磁体装置的轴向长度，但是在其轴向端面处设置有裙边缘通量传导元件，其周边裙部部分形成有用的空气间隙延伸部 与转子磁体布置。 定子板组件和相关的裙边缘通量传导元件可以具有限定凸极结构的切口; 导磁元件的裙部在其前端设有切口，用于产生磁阻转矩分量，该转矩分量在转子旋转期间相对于由凸极结构构成的电磁转矩分量在时间上移动。 支撑信息存储盘的转子结构的一部分具有容纳盘保持磁体的环形凹部，该磁盘保持磁体的上表面相对于转子的环形导磁盘支撑脊稍微凹入，其截面形状 即使采用了保持磁体的矫顽力的公差范围变化，也可以建立具有精确预定字符的磁盘保持力。

公开(公告)号：US4652820A

公开(公告)日：1987-03-24

申请号：US478171

申请日：1983-03-23

申请人： Robert L. Maresca

发明人： Robert L. Maresca

IPC分类号： G01D5/20 ,  F16C32/04 ,  F16C39/06 ,  G01B7/00 ,  G01B7/02 ,  G01N29/30 ,  G05D3/00 ,  G05D3/12 ,  G12B1/00 ,  H01F7/08 ,  H02K29/12 ,  G01B7/14 ,  G01N27/72 ,  F16C35/00 ,  G01R33/12

CPC分类号： F16C32/0448 ,  G01B7/02 ,  G01N29/30 ,  H01F7/08 ,  H02K29/12

摘要： A combined magnetic sensor and actuator device for applying a magnetic force to a magnetizable body and for sensing the distance between the device and the magnetizable body. The device includes a magnetizable pole piece separated from the magnetizable body by gaps. The pole piece, gaps, and magnetizable body form a magnetic circuit with the gaps preferably being the major reluctance of the circuit. Separate means are provided for generating a relatively large time-varying magnetic actuating flux in the magnetic circuit and for generating a relatively small time-varying magnetic sensing flux in the magnetic circuit. Each magnetic flux follows a flux path, such that the two flux paths have at least a portion in common. Detection means measure the relatively small magnetic flux in the magnetic circuit, and thereby measure the distance between the device and the magnetizable body.

摘要翻译： 一种组合磁传感器和致动器装置，用于将磁力施加到可磁化体并用于感测装置与可磁化体之间的距离。 该装置包括通过间隙与可磁化体分离的可磁化极靴。 极片，间隙和可磁化体形成磁路，间隙优选地是电路的主要磁阻。 提供了分离装置，用于在磁路中产生相当大的时变磁致动磁通并且在磁路中产生相对小的时变磁感应磁通。 每个磁通量遵循磁通路径，使得两个磁通路径具有至少一部分共同的部分。 检测装置测量磁路中较小的磁通量，从而测量装置与可磁化体之间的距离。

公开(公告)号：US4617499A

公开(公告)日：1986-10-14

申请号：US800293

申请日：1985-11-21

申请人： Masami Yuasa

发明人： Masami Yuasa

IPC分类号： H02P6/08 ,  H02K29/00 ,  H02K29/12 ,  H02P6/18

CPC分类号： H02P6/185 ,  H02K29/12

摘要： A brushless motor comprises a magnet having a plurality of pole faces, a plurality of conductors mounted adjacent to the pole faces, and a plurality of phase coils connected together at a neutral point. The magnet is included in the motor rotor and the phase coils are included in the motor stator. A high-frequency signal source supplies a high-frequency signal to the neutral point, whereby changes in eddy current loss and thus the position of the rotor with respect to the stator are detected.

摘要翻译： 无刷电动机包括具有多个极面的磁体，与极面邻近安装的多个导体以及在中性点处连接在一起的多个相线圈。 磁体包含在电动机转子中，相位线圈包括在电动机定子中。 高频信号源向中性点提供高频信号，从而检测涡流损耗的变化，从而检测转子相对于定子的位置。