Geared motor
    51.
    发明申请
    Geared motor 有权
    减速电机

    公开(公告)号:US20060192517A1

    公开(公告)日:2006-08-31

    申请号:US11361972

    申请日:2006-02-27

    IPC分类号: G05B1/06

    CPC分类号: H02P6/17

    摘要: 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.

    摘要翻译: 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。

    Absolute magnetic encoder
    52.
    发明授权
    Absolute magnetic encoder 有权
    绝对磁编码器

    公开(公告)号:US07023203B2

    公开(公告)日:2006-04-04

    申请号:US10904734

    申请日:2004-11-24

    IPC分类号: G01B7/30

    CPC分类号: G01D5/145 G01D5/2451

    摘要: 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.

    摘要翻译: 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。

    Motor Encoder
    53.
    发明申请
    Motor Encoder 有权
    电机编码器

    公开(公告)号:US20050127762A1

    公开(公告)日:2005-06-16

    申请号:US10904673

    申请日:2004-11-22

    摘要: 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.

    摘要翻译: 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。

    Actuator having a wave gear reduction drive
    54.
    发明授权
    Actuator having a wave gear reduction drive 有权
    执行器具有波浪减速驱动

    公开(公告)号:US06817267B2

    公开(公告)日:2004-11-16

    申请号:US10076342

    申请日:2002-02-19

    IPC分类号: F16H3500

    摘要: An actuator has a housing, a motor and a wave gear reduction drive arranged axially in the housing, and a rotational shaft extending through the centers of these portions. The rotational shaft is supported at its rear side by a first bearing and at its front side by a boss of a flexible external gear of the wave gear reduction drive via a second bearing. The rotational shaft is formed integrally on its outer peripheral portion with a cam plate of a wave generator of the wave gear reduction drive. The actuator thus configured does not require a coupling mechanism between the motor and the wave gear reduction drive and needs fewer bearings to support the rotational shaft, making it possible to reduce the axial length of the actuator.

    摘要翻译: 致动器具有壳体,马达和轴向布置在壳体中的波齿轮减速驱动器,以及延伸穿过这些部分的中心的旋转轴。 旋转轴在其后侧由第一轴承支撑,并且其前侧由波齿轮减速驱动器的柔性外齿轮的凸台经由第二轴承支撑。 旋转轴与波轮齿轮减速驱动器的波发生器的凸轮板一体地形成在其外周部上。 如此构造的致动器不需要电动机和波齿轮减速驱动之间的联接机构,并且需要更少的轴承来支撑旋转轴,使得可以减小致动器的轴向长度。

    Magneto resistive sensor for detecting movement of a rotating body

    公开(公告)号:USRE34355E

    公开(公告)日:1993-08-24

    申请号:US686996

    申请日:1991-04-18

    摘要: The invention discloses a movement detecting device for detecting the movement state of a moving body such as a rotating body, in which a magnetic recording medium on which N and S magnetic poles are alternately recorded at a constant interval is fixed symmetrically with respect to a rotary shaft of a rotating body whose rotation state is to be detected, and an MR element comprising magnet-resistive elements is mounted at a fixed position relative to the magnetic recording medium so that the rotation state of the rotating body can be detected from variation of the values of resistance of the magnet-resistive elements caused by the rotation of the body. N and S poles are recorded on the magnetic recording medium with a small pole pitch P. The magnet-resistive elements are formed to have a width sufficiently smaller than the pole pitch. The magnet-resistive elements constitute a first group and a second group, the magnet-resistive elements of each group being disposed with an interval equal to the pole pitch or half the pole pitch. The magnet-resistive elements are disposed in such a manner that the interval between the groups is deviated from the pole pitch, whereby a circuit comprising these magnet-resistive elements can detect the rotation of the rotating body.

    Control apparatus for electric generator
    57.
    发明授权
    Control apparatus for electric generator 失效
    发电机控制装置

    公开(公告)号:US5231344A

    公开(公告)日:1993-07-27

    申请号:US917734

    申请日:1992-07-20

    IPC分类号: H02J7/14 H02J7/24 H02P9/30

    摘要: A control device for an electric generator for use with a vehicle engine includes an armature winding (stator) and a field winding (rotor) driven by the vehicle engine. A chopper is provided for controlling the field current of the field winding and a pulse width modulator is provided for controlling the duty cycle of the chopper in response to the operating conditions of the engine. A voltage feedback loop is provided from a normally provided battery which loop incorporates a detector for detecting the actual battery voltage and a comparator for comparing the battery voltage with a predetermined set voltage so that the difference in voltage is rendered to zero. The invention additionally provides a current feedback loop for controlling a deviation between a current command value determining the duty of the chopper and an actual current flowing through the field winding so as to be substantially zero. There is also disclosed means for adaptively modifying the current command signal and means for controlling the current demanded by the field winding to reduce the torque demanded by the generator at times, inter alia, of acceleration and engine knocking.

    摘要翻译: 用于与车辆发动机一起使用的发电机的控制装置包括由车辆发动机驱动的电枢绕组(定子)和励磁绕组(转子)。 提供了用于控制励磁绕组的励磁电流的斩波器,并且提供了脉冲宽度调制器,用于响应于发动机的工作条件来控制斩波器的占空比。 从正常提供的电池提供电压反馈回路,该回路包括用于检测实际电池电压的检测器和用于将电池电压与预定设定电压进行比较的比较器,使得电压差变为零。 本发明另外提供电流反馈回路,用于控制确定斩波器的占空比的电流指令值与流过励磁绕组的实际电流之间的偏差大致为零。 还公开了用于自适应地修改电流指令信号的装置,以及用于控制由励磁绕组所需的电流的装置,以减少发电机特别是加速和发动机爆震时所需的转矩。

    Permanent magnet reversible synchronous motor
    59.
    发明授权
    Permanent magnet reversible synchronous motor 失效
    永磁同步电动机

    公开(公告)号:US5038065A

    公开(公告)日:1991-08-06

    申请号:US349494

    申请日:1989-05-09

    IPC分类号: H02K21/14 H02K29/08

    CPC分类号: H02K21/14 H02K29/08

    摘要: A rotor of a permanent magnet type synchronous motor facing a stator having a number of slots comprises a rotor core fixed to a motor shaft and an even number of permanent magnets in a circumferential direction of the rotor core. Projecting portions are formed in the shape of a protruding portion of the rotor core over each permanent magnet. The width (A) of each projecting portion is different from the pitch (B) of the slots of the stator. A position detector for detecting the permanent magnet position of the rotor comprises detectors of the normal rotation and other detectors of the reverse rotation. These detectors are arranged having predetermined phase differences (.alpha., .beta.) to a center line. A pattern generating circuit is provided for switching the conducting position to the stator winding corresponding to the phase differences.

    摘要翻译: 面向具有多个槽的定子的永久磁铁式同步电动机的转子包括固定在电动机轴上的转子铁芯和在转子铁芯的圆周方向上的偶数个永久磁铁。 突出部分形成为每个永磁体上的转子芯的突出部分的形状。 每个突出部分的宽度(A)不同于定子的槽的间距(B)。 用于检测转子的永磁体位置的位置检测器包括正转的检测器和反转的其它检测器。 这些检测器被布置成与中心线具有预定的相位差(α,β)。 提供模式产生电路,用于将导通位置切换到对应于相位差的定子绕组。

    Actuator with stepping motion function
    60.
    发明授权
    Actuator with stepping motion function 失效
    执行器具有步进运动功能

    公开(公告)号:US4983893A

    公开(公告)日:1991-01-08

    申请号:US678486

    申请日:1984-12-05

    摘要: An actuator has a stepping motion function with a high stopping accuracy and resolution. The actuator includes a fixed portion and a movable portion constructed in combination so as to be movable relative to each other, a coil for imparting a moving force to the movable portion, a magnetic recording medium mounted on one of the fixed portion and the movable portion and recording magnetic signals, and a plurality of magnetic sensors mounted on the other thereof for detecting said magnetic signals in said magnetic recording medium, and wherein signals different in phase and output from said respective sensors are used by themselves, or signals inversely converted from the former signals are additionally used, and the coil is supplied with a driving force command by sequentially selecting and changing those signals.

    摘要翻译: 执行器具有高停止精度和分辨率的步进运动功能。 致动器包括固定部分和可相对于彼此移动的组合的可动部分,用于向可动部分施加移动力的线圈,安装在固定部分和可动部分之一上的磁记录介质 和记录磁信号,以及安装在另一个上的多个磁传感器,用于检测所述磁记录介质中的所述磁信号,并且其中相位不同的信号和从所述各个传感器输出的信号本身使用,或从该信号反向转换的信号 另外使用前一个信号,并且通过依次选择和改变那些信号来向线圈提供驱动力命令。