Phase-control device for synchronous motors
    1.
    发明授权
    Phase-control device for synchronous motors 失效
    同步电机相控装置

    公开(公告)号:US4310787A

    公开(公告)日:1982-01-12

    申请号:US105974

    申请日:1979-12-21

    IPC分类号: H02P25/03 H03H11/20 H02P5/52

    摘要: A device for controlling the phase of an output pulse sequence relative to an input pulse train of the same frequency comprises a multiplier receiving the pulse train from a frequency generator and emitting to a divider a rectangular waveform having a frequency m times that of the pulse train. The divider is controlled by a comparator to divide the frequency of the rectangular waveform by a factor of m.div.1, m-1, or m, depending on whether the actual phase difference between the pulse train and the sequence is less than, greater than, or equal to a predetermined phase angle, the actual phase difference being communicated to the comparator by a counter registering during each cycle of the pulse train a number of pulses proportional to the phase difference. The divider may energize via a frequency converter a synchronous motor having a rotor connected to a disk whose rate of rotation is monitored by a pickup transmitting a pulse sequence to the counter for phase comparison with the input pulse train, whereby the position of the rotor and the disk upon each rotation may be precisely controlled. The angular position of the rotor and disk may be controlled relative to a second rotor of another synchronous motor, this motor being energized either directly by the frequency generator or indirectly via another multiplier, divider, comparator and counter.

    摘要翻译: 用于控制相对于相同频率的输入脉冲序列的输出脉冲序列的相位的装置包括:乘法器,接收来自频率发生器的脉冲序列,并向分频器发送频率为脉冲串数m倍的矩形波形 。 分频器由比较器控制,根据脉冲序列和序列之间的实际相位差是否小于,大于等于1的方式将矩形波形的频率除以m DIVIDED 1,m-1或m的因子 或等于预定的相位角,实际相位差通过计数器在脉冲序列的每个周期期间记录与比较器成比例的脉冲数来传送给比较器。 分压器可以通过变频器通电一个同步电动机,该同步电动机具有连接到盘的转子,其转速由通过脉冲序列传送到计数器的拾取器监测,用于与输入脉冲串进行相位比较,从而转子的位置和 可以精确地控制每次旋转时的盘。 转子和盘的角位置可以相对于另一同步电动机的第二转子来控制,该电动机直接由频率发生器或间接通过另一乘法器,分频器,比较器和计数器通电。

    Auxiliary bearing system for a rotor floating-mounted on a stator
    2.
    发明授权
    Auxiliary bearing system for a rotor floating-mounted on a stator 失效
    浮子固定在定子上的转子辅助轴承系统

    公开(公告)号:US5616976A

    公开(公告)日:1997-04-01

    申请号:US313038

    申请日:1994-09-26

    摘要: The invention concerns an auxiliary bearing system with mechanical bearing elements (3, 4), the auxiliary bearing system being designed for a rotor (2) which is mounted for contactless motion in a stator (1), in particular by means of a magnetic field between the rotor and stator. The auxiliary bearing elements are fixed to the stator at a short radial distance from the rotor and become active in the event of the rotor jumping radially out of position. In order to counter counter-rotational precession of the rotor when it is supported externally by the auxiliary bearing system, and synchronous motion when it is supported internally, the auxiliary bearing elements (3, 4) are designed in such a way that they form on one side a contact surface (6) which provides external support for the rotor (2) and on the other side a contact surface (8) for internal support of the rotor. The two contact surfaces (6, 8) are brought, as the rotor moves increasingly out of position in the radial direction, successively into contact with the rotor at least that bearing element which first acts on the rotor when the rotor moves out of position being fitted on a radially flexible mounting.

    摘要翻译: PCT No.PCT / DE93 / 00252 Sec。 371日期:1994年9月26日 102(e)1994年9月26日PCT 1993年3月20日PCT公布。 出版物WO93 / 20362 日期:1993年10月14日本发明涉及一种具有机械轴承元件(3,4)的辅助轴承系统,辅助轴承系统设计用于转子(2),该转子(2)安装成用于定子(1)中的非接触运动,特别是 转子和定子之间的磁场的装置。 辅助轴承元件在离转子短的径向距离处固定到定子,并且在转子径向偏离位置的情况下变得有效。 为了抵抗转子在由辅助轴承系统外部支撑时的反向旋转进动,以及当内部被支撑时的同步运动,辅助轴承元件(3,4)被设计成使得它们形成在 一侧是为转子(2)提供外部支撑的接触表面(6),另一侧为用于转子内部支撑的接触表面(8)。 随着转子在径向方向越来越远离位置,连续地与转子接触,至少在转子移动离开位置时首先作用在转子上的支承元件,使两个接触表面(6,8) 安装在径向柔性支架上。

    Method of and apparatus for digitally setting a control frequency
    3.
    发明授权
    Method of and apparatus for digitally setting a control frequency 失效
    用于数字设置控制频率的方法和装置

    公开(公告)号:US4851783A

    公开(公告)日:1989-07-25

    申请号:US181974

    申请日:1988-04-15

    申请人: Jurgen Rabiger

    发明人: Jurgen Rabiger

    CPC分类号: H03B21/00

    摘要: A method of and an apparatus for generating a control frequency in which two submultiples of a frequency standard are obtained which differ by unity in the respective frequency division and are mixed so that the contribution of a prior control frequency is reduced form period group to period group while the contribution of the new control frequency is increased from period group to period group. The system provides fine control of frequencies for, for example, driving synchronous motors without requiring excessively high frequency standard oscillators.

    摘要翻译: 一种用于产生控制频率的方法和装置,其中获得频率标准的两个倍数,其在各个分频中相差一个并且被混合,使得先前的控制频率的贡献从周期组减少到周期组 而新控制频率的贡献从周期组增加到周期组。 该系统提供了对例如驱动同步电动机的频率的精细控制,而不需要过高的频率标准振荡器。