交流电压激励感应动力弹射器降低弹道激光重力仪自震误差分量

IF 0.1 Q4 INSTRUMENTS & INSTRUMENTATION
V. Bolyukh, Оleksandr Vinnichenko, A. Omelchenko
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引用次数: 0

摘要

本研究的目的是分析不同频率的交流电压源对弹道激光重力仪感应动态弹射器的激励对机电指示器的影响,该指示器在测量重力加速度g时由于后坐力的减小而提供误差的自震分量的减小值。考虑到相互关联的电、磁和机械过程,提出了重力仪弹射器在交流电压源激励下的数学模型。建立了重力仪弹射器在这种激励下的机电过程的性质。结果表明,有源元件中的电流之间发生相移,其结果是电动力的正(排斥)脉冲与力的负(吸引)脉冲交替。介绍了重力仪弹射器效率的一个标准,该标准考虑了在电感器绕组的电动力和电流的最小值下试验体的最大推力值。已经发现,重力仪弹射器的最高效率是在250Hz的频率下提供的,在该频率下弹射器效率是在50Hz的频率下的3.5倍。研究表明,从一个短脉冲的感应动力弹射器激励方法到交流电压源激励方法的转变,有可能降低重力加速度测量的不确定性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Reduction of the auto seismic component of error of a ballistic laser gravimeter by excitation of an induction-dynamic catapult from an AC voltage source
The purpose of the study is to analyse the influence of the excitation of an induction-dynamic catapult of a ballistic laser gravimeter from an AC voltage source at different frequencies on electromechanical indicators that provide a reduced value of the auto seismic component of error in measuring the gravitational acceleration g due to a decrease in the recoil force. A mathematical model of the gravimeter catapult when excited from an AC voltage source is proposed, taking into account the interrelated electrical, magnetic and mechanical processes. The nature of the electromechanical processes in the catapult of the gravimeter with such excitation has been established. It is shown that a phase shift occurs between the currents in active elements, as a result of which positive (repulsive) pulses of the electrodynamic force alternate with negative (attractive) pulses of force. A criterion for the efficiency of the gravimeter catapult has been introduced, taking into account the maximum value of push of the test body at the smallest values of the electrodynamic force and current of the inductor winding. It was found that the highest efficiency of the gravimeter catapult is provided at a frequency of 250 Hz, at which the catapult efficiency is 3.5 times higher than at a frequency of 50 Hz. It is shown that the transition from the method of excitation of an induction-dynamic catapult with one short pulse to excitation from an AC voltage source makes it possible to reduce the uncertainty in measuring the gravitational acceleration.
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来源期刊
Ukrainian Metrological Journal
Ukrainian Metrological Journal INSTRUMENTS & INSTRUMENTATION-
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