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    • 7. 发明授权
    • Circuit measuring average period of periodic signal
    • 电路测量周期信号的平均周期
    • US4310795A
    • 1982-01-12
    • US136926
    • 1980-04-03
    • Johan K. Fremerey
    • Johan K. Fremerey
    • G01R23/10G01R23/02G04F10/04
    • G04F10/04G01R23/02
    • A device for determining the average period of a low-frequency periodic sal comprises a counter receiving stepping pulses from a high-frequency pulse generator and resetting pulses from a phase-angle detector monitoring the periodic signal. A shift register is loaded with the count of the counter in response to each pulse generated by the detector, an adder at an output of the shift register emitting a signal coding the sum of the contents of this register. Another shift register is loaded under the control of the detector with the output sums of the adder and has a first and a last storage cell connected to a substractor which emits a signal indicating changes in average period. Further registers and summing circuitry may be inserted between the adder and the additional shift register for increasing the number of periods taken to form each average-period estimate.
    • 用于确定低频周期信号的平均周期的装置包括计数器,接收来自高频脉冲发生器的步进脉冲并从监视周期信号的相位角检测器复位脉冲。 移位寄存器响应于由检测器产生的每个脉冲加载计数器的计数,移位寄存器的输出处的加法器发出编码该寄存器的内容的和的信号。 在检测器的控制下,另一个移位寄存器被加法器的输出和加载,并且具有连接到减法器的第一和最后一个存储单元,该存储单元发出指示平均周期变化的信号。 可以在加法器和附加移位寄存器之间插入另外的寄存器和求和电路,以增加形成每个平均周期估计所花费的周期数。
    • 9. 发明授权
    • Magnetic guiding device
    • 导磁装置
    • US07307365B2
    • 2007-12-11
    • US10510737
    • 2003-03-28
    • Johan K. FremereyMatthias Lang
    • Johan K. FremereyMatthias Lang
    • H02K7/09H02K39/06
    • F16C32/0465F16C32/0476F16C2300/02
    • The invention concerns a magnetic guiding device (1) having at least one element (2) to be guided magnetically in the axial direction, e.g. a shaft or an actuation member that is movable in the axial direction, the element (2) having a radial flange (14) made of magnetizable material that is enclosed by an axial yoke (47) made of ferromagnetic material and constituting a stator, forming magnet gaps (51, 52) in which is producible, by means of a combination of permanent magnets and electromagnets (53, 54, 55), an axial magnetic flux with which the axial position of the element (2) can be influenced, which is characterized in that in the axial yoke (47), at least one pair of axially oppositely polarized permanent magnets (53, 54) are arranged axially next to one another, and an electromagnetic coil (55) is moreover arranged radially adjacently as an electromagnet, the magnetic flux in the coil (55) being controllable in such a way that an asymmetrical magnetic flux having an axial resultant force is producible in the magnet gaps (51, 52).
    • 本发明涉及一种磁性引导装置(1),该导引装置具有至少一个要沿轴向磁性导向的元件(2)。 所述元件(2)具有由可磁化材料制成的径向凸缘(14),所述径向凸缘(14)被由铁磁材料制成并构成定子的轴向磁轭(47)包围,形成 通过永磁体和电磁体(53,54,55)的组合可生产的磁体间隙(51,52),可影响元件(2)的轴向位置的轴向磁通量,其中 其特征在于,在轴向轭(47)中,至少一对轴向相对极化的永磁体(53,54)轴向地彼此相对布置,并且电磁线圈(55)此外被布置成电磁体 线圈(5​​5)中的磁通量可以在磁体间隙(51,52)中产生具有轴向合力的不对称磁通量的方式被控制。