DRIFT COMPENSATOR FOR CONTROL OF IMAGE BRIGHTNESS OF CATHODE-RAY TUBE AND METHOD FOR CALIBRATION OF IMAGE BRIGHTNESS OF CATHODE-RAY TUBE

    公开(公告)号:JPH06125511A

    公开(公告)日:1994-05-06

    申请号:JP12312391

    申请日:1991-04-26

    Abstract: PURPOSE: To compensate drift and to always secure high quality reproduction by detecting luminance changes that are caused by drift in video which occurs due to a temperature change and a change with the passage of time, changing voltage that is added to a 2nd grid and controlling video luminance to a pre scribed value. CONSTITUTION: A counting amplifier 110 outputs an output that corresponds to a cathode current IK from electric potential of a detection resistance 86, and an A/D converter 120 converts the output and adds it to a microcomputer(MC) 124. The MC 124 performs various arithmetic calculations and controls and decides the voltage of a 1st grid 74 and a cathode 72 through a control register 128, and amplifiers 132 and 136 with 1st and 2nd outputs. At the same time, after a D/A converter 158 has converted a 3rd output from the MC 124, an amplifier 160 amplifies it and supplies an appropriate bias signal to a 2nd grid 76. Through this, video luminance is controlled to a prescribed value, a drift that is caused by the temperature change and the change with the passage of time is compensated, and high quality reproduction is always secured.

    Rockets, methods of rocket control and methods of rocket evaluation utilizing pressure compensation
    48.
    发明专利
    Rockets, methods of rocket control and methods of rocket evaluation utilizing pressure compensation 有权
    摇杆调节方法和利用压力补偿的岩石评价方法

    公开(公告)号:JP2011236903A

    公开(公告)日:2011-11-24

    申请号:JP2011098985

    申请日:2011-04-27

    Abstract: PROBLEM TO BE SOLVED: To provide rockets, rocket motors, methods of controlling a rocket and methods of evaluating a rocket design.SOLUTION: In some embodiments, a method of controlling a rocket can include measuring a combustion chamber pressure, calculating a logarithm of the measured combustion chamber pressure, and computing the difference between the logarithm of the measured combustion chamber pressure and the logarithm of a reference combustion chamber pressure value to generate an error signal. The method can further include filtering the error signal to generate a compensated signal in the logarithm domain, and exponentiating of the compensated signal in the logarithm domain to provide a compensated signal in the physical domain.

    Abstract translation: 要解决的问题:提供火箭,火箭发动机,控制火箭的方法和评估火箭设计的方法。 解决方案:在一些实施例中,控制火箭的方法可以包括测量燃烧室压力,计算所测量的燃烧室压力的对数,以及计算所测量的燃烧室压力的对数与对数之间的差 参考燃烧室压力值以产生误差信号。 该方法还可以包括对误差信号进行滤波以产生对数域中的补偿信号,以及对数域中补偿信号的指数,以在物理域中提供补偿信号。 版权所有(C)2012,JPO&INPIT

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