pimiПриборы и методы измеренийDevices and Methods of Measurements2220-95062414-0473BNTU10.21122/2220-9506-2016-7-1-21-36pimi-236Research ArticleСредства измеренийMeasuring instrumentsСТАТИЧЕСКАЯ И ДИНАМИЧЕСКАЯ СТАБИЛЬНОСТЬ ГРАВИИНЕРЦИАЛЬНОГО ДАТЧИКА С ЕМКОСТНОЙ ДИФФЕРЕНЦИАЛЬНОЙ СИСТЕМОЙ УПРАВЛЕНИЯ ЧУВСТВИТЕЛЬНОСТЬЮSTATIC AND DYNAMIC STABILITY OF GRAVI-INERTIAL SENSORS WITH CAPACITIVE DIFFERENTIAL SYSTEM OF SENSITIVITY ADJUSTMENTДжилавдариИ. З.GilavdaryI. Z.

Address for correspondence: Gilavdary I. Belarusian National Technical University, Nezavisimosty Ave., 65, 220013, Minsk, Belarus e-mail:gilavdary@bntu.by

gilavdary@bntu.byМекидС.MekidS.

Mechanical Engineering Department

gilavdary@bntu.byРизноокаяН. Н.RiznookayaN. N.gilavdary@bntu.byАбдул СатерА. И.Abdul SaterA.gilavdary@bntu.byБелорусский национальный технический университетБеларусьBelarusian National Technical UniversityBelarusУниверситет нефти и полезных ископаемых короля Фахда, ДхахранСаудовская АравияKing Fahd University of Petroleum & Minerals, DhahranSaudi Arabia201606062016711623Copyright © Джилавдари И.З., Мекид С., Ризноокая Н.Н., Абдул Сатер А., 20162016Джилавдари И.З., Мекид С., Ризноокая Н.Н., Абдул Сатер А.Gilavdary I.Z., Mekid S., Riznookaya N.N., Abdul Sater A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://pimi.bntu.by/jour/article/view/236

Изучается конструкция гравиинерциального датчика с упруго подвешенной массой, обладающего максимальной чувствительностью и минимальным уровнем шума. Датчик содержит упругий торсион, электростатическую емкостную систему измерения движения подвижной массы и электростатическую емкостную систему уменьшения крутильной жесткости торсиона. Обе емкостные системы объединены в единую дифференциальную емкостную электростатическую систему. Аналитически и численно изучаются проблемы, возникающие в результате асимметрии этой системы. Исследуются квазистатический и динамический режимы свободного движения подвижной массы при отсутствии потерь энергии. Рассчитываются угловые интервалы устойчивости движения подвижной массы в электростатическом поле в зависимости от параметра асимметрии дифференциальной системы и от частоты свободных колебаний. 

The design of a gravi-inertial sensor with an elastically suspended sensing mass exhibiting a maximum sensitivity and minimum noise level is being studied. It is conceived that such a sensor contains a torsion mass-spring system, a capacitive pick-off circuit to detect motions of the sensing mass, and a capacitive system to reduce torsion stiffness. Both capacitive systems are combined into a single differential capacitance electrostatic system. The torsion stiffness is reduced by applying an electric field. Problems resulting from the electrostatic asymmetry of the differential system are studied analytically and numerically. The quasi-static and dynamic modes of the free movement of the sensing mass, in the absence of energy loss, are considered. The angular intervals of stability of the sensing mass movement in the electrostatic field, depending on the differential system asymmetry parameter and a frequency of free oscillations «proof mass», are calculated.

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The authors declare that there are no conflicts of interest present.