Power supply systems for reluctance motors
    16.
    发明公开
    Power supply systems for reluctance motors 失效
    电动马达电源系统

    公开(公告)号:EP0188239A3

    公开(公告)日:1987-10-07

    申请号:EP86100257

    申请日:1986-01-10

    CPC classification number: H02M7/521 H02P25/0925

    Abstract: In a power supply system for a variable reluctance motor, each phase winding (a, b) of the motor is connectible across a pair of supply rails by first (GTO a , GTO b ) and second (T a T e ) switch means located respectively between the first supply rail and the winding and between the winding and the second supply rail. The first switch means (GTO., GTO b ) is a fast switch-off device such as a gate tum-off thyristor or a transistor, while the second switch means (T a , T b ) is a slow turn-off device, such as a thyristor suitable for application to a line-commutation situation. In a two-phase configuration, where the second switch means is a thyristor, force- commutation of the second switch means may be achieved by means of a suitable capacitor (C c ) interconnection between the thyristors switching the respective phases.

    Video rangefinder
    17.
    发明公开
    Video rangefinder 失效
    视频范围

    公开(公告)号:EP0132829A3

    公开(公告)日:1987-10-07

    申请号:EP84108707

    申请日:1984-07-24

    Inventor: Brown, David C.

    CPC classification number: G01C3/22

    Abstract: A system for determining range and orientation of distant objects, such as a ship, is claimed. By utilizing split imaging the observed height on a video monitor can be accurately determined despite movements of the image on the monitor. The observed ship can be visually identified and the true height determined from reference source. A better comparison of data indicating the true height compared to observed height permits calculation of the rangeto the target ship. Split imaging can also be utilized to determine the observed length of the ship so that observed height and length data can be compared to the true height and length of the target ship to determine orientation of the target ship relative to the observed.

    Method and apparatus for dual-beam spectral transmission measurements
    20.
    发明公开
    Method and apparatus for dual-beam spectral transmission measurements 失效
    Verfahren und VorrichtungfürspektraleZweistrahldurchlässigkeitsmessungen。

    公开(公告)号:EP0176826A2

    公开(公告)日:1986-04-09

    申请号:EP85111475.1

    申请日:1985-09-11

    CPC classification number: G01N21/5907 G01J1/36 G01J2001/161 G01N2021/5992

    Abstract: In the measurement of the optical transmittance of a sample, a beam which is split from a source of illumination is . directed through the sample and then redirected back through the sample. The redirected beam and a reference beam which is also split from the source of illumination are alternately applied to a photodetector. Both the sample beam and the reference beam pass through a monochromator prior to application to the photodetector. The output of the photodetector is processed by an electronic circuit and applied to a computer. Data representative of the two beams can be compared in order to provide an indication of the amount of light the sample transmits at certain optical wavelengths.

    Abstract translation: 在测量样品的光透射率时,从照明源分离的光束被引导通过样品,然后被重新定向回通过样品。 重新定向的光束和也从光源分割的参考光束被交替地施加到光电检测器。 在施加到光电检测器之前,采样光束和参考光束都通过单色仪。 光电检测器的输出由电子电路处理并应用于计算机。 可以比较表示两个光束的数据,以便提供样品在某些光波长处透射的光量的指示。

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