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    • 51. 发明授权
    • Squirrel-cage rotor having end rings of double structure
    • 鼠笼式转子具有双重结构的端环
    • US4309635A
    • 1982-01-05
    • US117623
    • 1980-02-01
    • Makio SeiKunio Miyashita
    • Makio SeiKunio Miyashita
    • H02K17/16H02K3/06
    • H02K17/165
    • A squirrel-cage rotor for an induction motor is disclosed. In this rotor, each of end rings electrically connecting the associated ends of the conductor bars received in the slots of the rotor core comprises a first ring portion disposed in contact with the associated end face of the rotor core, and a second ring portion disposed on or coupled to the first ring portion through a member of a magnetic material in the axial direction of the motor, this second ring portion having a sectional area smaller than that of the first ring portion when the section is taken in a direction orthogonal with respect to the axis of the motor.
    • 公开了用于感应电动机的鼠笼式转子。 在该转子中,电连接容纳在转子芯的槽中的导体杆的相关端部的每个端环包括设置成与转子芯的相关联的端面相接触的第一环部分和设置在转子芯上的第二环部分 或者通过电动机的轴向上的磁性材料的构件与第一环部分耦合,该第二环形部分的截面积小于第一环部分的截面积,该截面面积在相对于 电机轴。
    • 53. 发明申请
    • APPARATUS FOR DETECTING POSITION OF ROTATION OF MOTOR
    • 检测电机转动位置的装置
    • US20100176695A1
    • 2010-07-15
    • US12602892
    • 2007-06-22
    • Shunichi TezukaJunji KoyamaKunio Miyashita
    • Shunichi TezukaJunji KoyamaKunio Miyashita
    • H02K11/00
    • G01D5/145H02K5/1732H02K11/215
    • A magnetic absolute sensor for a geared motor comprises a dipole magnet and hall elements. The dipole magnet is fixed to a hollow portion of a hollow rotor shaft. A bracket attached to an end plate of a motor housing is coaxially inserted from the rear end side of the hollow portion. The dipole magnet is inserted from the front side in a cylindrical portion of the bracket. The hall elements are arranged at an interval of 90 degree on the circular inner periphery surface of the cylindrical portion. The hall elements face the circular outer periphery surface of the dipole magnet with a fixed gap therebetween. It is not necessary to increase a motor shaft length in order to incorporate the magnetic absolute sensor. The flux of a motor driven magnet is blocked by the hollow rotor shaft and the hall elements are not adversely affected.
    • 用于齿轮电动机的磁绝对传感器包括偶极子磁体和霍尔元件。 偶极子磁体固定在空心转子轴的中空部分。 从中空部的后端侧同轴地插入安装在电动机壳体的端板上的支架。 偶极磁体从前侧插入支架的圆柱形部分。 霍尔元件在圆筒部的圆形内周面上以90度的间隔配置。 霍尔元件面对偶极子磁体的圆形外周表面,其间具有固定的间隙。 为了并入磁绝对传感器,不需要增加电机轴长度。 电机驱动磁体的磁通被空心转子轴阻挡,霍尔元件不会受到不利影响。
    • 54. 发明申请
    • Method for Magnetizing Ring Magnet and Magnetic Encoder
    • 磁性环形磁铁和磁性编码器的磁化方法
    • US20080048811A1
    • 2008-02-28
    • US11791438
    • 2005-05-30
    • Kunio MiyashitaJunji KoyamaMuneo MitamuraYasuo Sawamura
    • Kunio MiyashitaJunji KoyamaMuneo MitamuraYasuo Sawamura
    • H01F13/00G01D5/245
    • H01F41/0273H01F13/003
    • An insert member (42) having an identical permeability is fitted in the circular center hole (41a) of a magnetic ring (41) which is then fitted in the circular hollow section (43a) of a fitting-over member (43) having an identical permeability. Under that state, the magnetic ring (41) is placed in a parallel magnetic field. Lines of magnetic flux passing through the magnetic ring (41) held between the insert member (42) and the fitting-over member (43) become linear without substantially inclining against the parallel magnetic field. Under that state, harmonic noise causing deterioration in detection precision will scarcely appear in the output of a magnetic sensor for detecting the rotating magnetic field of a ring magnet (40) obtained by performing two-pole magnetization on the magnetic ring (41). When the ring magnet (40) is employed, deterioration in detection precision of a magnetic encoder (1) due to magnetization state of the ring magnet (40) can be avoided, and deterioration in detection precision can be suppressed.
    • 具有相同磁导率的插入件(42)装在一个安装在装配件(43)的圆形中空部分(43a)上的磁环(41)的圆形中心孔(41a)中, 具有相同的渗透性。 在该状态下,将磁环(41)置于平行磁场中。 保持在插入构件(42)和配合构件(43)之间的磁性环(41)的磁通线线性变得线性,而基本上不抵抗平行磁场倾​​斜。 在该状态下,在用于检测通过在磁环(41)上进行两极磁化而获得的环形磁体(40)的旋转磁场的磁传感器的输出中几乎不会出现导致检测精度降低的谐波噪声。 当使用环形磁体(40)时,可以避免由于环形磁体(40)的磁化状态引起的磁性编码器(1)的检测精度的劣化,并且可以抑制检测精度的劣化。
    • 55. 发明申请
    • Geared motor
    • 减速电机
    • US20060192517A1
    • 2006-08-31
    • US11361972
    • 2006-02-27
    • Kunio MiyashitaJunji KoyamaMuneo MitamuraYasuo Sawamura
    • Kunio MiyashitaJunji KoyamaMuneo MitamuraYasuo Sawamura
    • G05B1/06
    • H02P6/17
    • A motor encoder is mounted on a motor shaft of a geared motor 1, and the origin position is detected by using a Z-phase signal. An absolute value encoder with a precision that allows the number of motor rotations to be determined is mounted on an output shaft 4 of a reduction gear, and the absolute rotational position thereof is detected. When the first Z-phase signal generated in conjunction with the rotation of the motor shaft 2a is obtained at startup and at other times, the mechanical starting point at which the motor shaft and output shaft are both positioned at the origin can be calculated based on the absolute rotational position of the reduction-gear output shaft obtained from the output-side absolute value encoder. Since the mechanical starting point is obtained by rotating the motor shaft a single rotation at most, the time required to calculate the mechanical starting point is short in comparison with conventional examples, and extraneous rotational movements can be avoided.
    • 马达编码器安装在齿轮传动马达1的马达轴上,并且通过使用Z相信号来检测原点位置。 将具有允许确定电动机转数的精度的绝对值编码器安装在减速齿轮的输出轴4上,并检测其绝对旋转位置。 当在启动时和其他时间获得结合马达轴2a的旋转而产生的第一Z相信号时,可以基于马达轴和输出轴位于原点的机械起始点计算 在从输出侧绝对值编码器获得的减速齿轮输出轴的绝对旋转位置上。 由于通过使电机轴最多旋转一次以获得机械起始点,因此计算机械起点所需的时间与传统的实例相比较短,并且可以避免无关的旋转运动。
    • 56. 发明授权
    • Absolute magnetic encoder
    • 绝对磁编码器
    • US07023203B2
    • 2006-04-04
    • US10904734
    • 2004-11-24
    • Kunio MiyashitaJunji KoyamaMuneo Mitamura
    • Kunio MiyashitaJunji KoyamaMuneo Mitamura
    • G01B7/30
    • G01D5/145G01D5/2451
    • The encoder rotor of an absolute magnetic encoder mounted on a servomotor shaft has a first drum of a bipolar magnet, and a second drum with a Q-bit multipolar magnetic pole track and a reference track. A signal processor generates absolute signals on the basis of detected signals, which differ in phase by 90° and in which a single rotation represents a single period, from X-phase and Y-phase magnetic sensors disposed facing the first drum, and on the basis of A- and B-phase signals, which differ in phase by 90°, and a reference signal obtained from A-, B-, and Z-phase magnetic sensors disposed facing the second drum. Even if the number of bits Q of the multipolar magnetic pole track is increased in order to enhance the resolution, the number of magnetic pole tracks does not need to be increased, and higher resolution can therefore be obtained without increasing the axial length.
    • 安装在伺服电动机轴上的绝对磁性编码器的编码器转子具有双极磁体的第一鼓和具有Q位多极磁极轨道和参考轨道的第二鼓。 信号处理器基于从面向第一鼓设置的X相和Y相磁传感器的相位相差90°并且单次旋转代表单个周期的检测信号产生绝对信号,并且在 基本相位相差90°的A相和B相信号,以及从面向第二鼓的A,B,Z相磁传感器获得的参考信号。 即使为了提高分辨率而增加多极磁极轨迹的位数Q,也不需要增加磁极轨迹的数量,因此可以在不增加轴向长度的情况下获得更高的分辨率。
    • 57. 发明申请
    • Motor Encoder
    • 电机编码器
    • US20050127762A1
    • 2005-06-16
    • US10904673
    • 2004-11-22
    • Kunio MiyashitaJunji Koyama
    • Kunio MiyashitaJunji Koyama
    • G01D5/245G01B7/14G01B7/30G01D5/14H02K1/00H02K3/00H02K29/08H02P1/18
    • G01D5/2451G01D5/145H02K29/08
    • An encoder mounted on a motor axle of an AC servomotor has a single bipolarly magnetized rotational disk, magnetic sensors for outputting X- and Y-signals that differ in phase by 90° in association with the rotation thereof, and a signal processing unit. The signal processing unit computes at predetermined cycles a rotor angle θa of a motor rotor on the basis of the X- and Y-phase signals, generates three-phase magnetic pole signals U, V, and W that differ in phase by 120° on the basis of the number M of magnetic poles of a motor, a magnetic pole reference angle θo, and the rotor angle θa; and generates A- and B-phase signals with predetermined pulse cycles that differ in phase by 90° on the basis of the rotor angle θa. An encoder that is advantageous for reducing the size and weight of an AC servomotor can be realized because it is sufficient to provide a single assembly composed of a rotational disk and magnetic sensors.
    • 安装在交流伺服电动机的电动机轴上的编码器具有单个双极性磁化旋转盘,用于输出与其旋转相关地相位相差90°的X和Y信号的磁传感器以及信号处理单元。 信号处理单元基于X和Y相信号,以规定的周期计算电动机转子的转子角度θa,生成相位相差120°的三相磁极信号U,V,W 马达的磁极数M,磁极参考角度θo和转子角度θa的基础; 并且以基于转子角度θa的相位相差90°的预定脉冲周期产生A相和B相信号。 可以实现有利于减小AC伺服电动机的尺寸和重量的编码器,因为它足以提供由旋转盘和磁性传感器组成的单个组件。