CAJ | 학술논문

采用可变积分时间常数和扣除积分漂移斜率相结合的方法,设计了一种新型长时间积分器.通过切换积分器积分电阻来改变积分时间常数,提高积分器的信噪比,防止积分输出饱和;利用DSP计算一段时间内积分器的积分漂移斜率,并利用该斜率对原始积分信号进行实时扣除,以达到减小积分漂移的目的.测试结果表明,该方案是一种有效消除积分漂移的长时间积分方法,并能消除改变积分时间常数后对积分漂移带来的不良影响,通过远程控制能方便地根据实验需要改变积分时间常数,且不再需要人工手动调节积分漂移,极大地提高了实验效率,适合于托卡马克装置放电实验中的电磁测量.
채용가변적분시간상수화구제적분표이사솔상결합적방법,설계료일충신형장시간적분기.통과절환적분기적분전조래개변적분시간상수,제고적분기적신조비,방지적분수출포화;이용DSP계산일단시간내적분기적적분표이사솔,병이용해사솔대원시적분신호진행실시구제,이체도감소적분표이적목적.측시결과표명,해방안시일충유효소제적분표이적장시간적분방법,병능소제개변적분시간상수후대적분표이대래적불량영향,통과원정공제능방편지근거실험수요개변적분시간상수,차불재수요인공수동조절적분표이,겁대지제고료실험효솔,괄합우탁잡마극장치방전실험중적전자측량.
. A kind of new long pulse integrator was designed based on the method of vari-able integral time constant and deducting integral drift by drift slope. The integral time constant can be changed by choosing different integral resistors, in order to improve the signal-to-noise ratio, and avoid output saturation; the slope of integral drift of a certain period of time can be calculated by digital signal processing, which can be used to deduct the drift of original integral signal in real time to reduce the integral drift. The tests show that this kind of tong pulse integrator is good at reducing integral drift, which also can eliminate the effects of changing integral time constant. According to experiments, the integral time constant can be changed by remote control and manual adjustment of integral drift is avoided, which can improve the experiment efficiency greatly and can be used for electromagnetic measurement in Tokamak experiment.