ДВОКАНАЛЬНИЙ П ‘ЄЗОЕЛЕКТРИЧНИЙ ГРАВІМЕТР
DUAL-CHANNEL PIEZOELECTRIC GRAVIMETER
Сторінки: 124-127. Номер: №3, 2020 (285)
Автори:
О. М. БЕЗВЕСІЛЬНА, Ю. В. КИРИЧУК, Н. М. НАЗАРЕНКО
Національний технічний університет України “Київський політехнічний інститут імені Ігоря Сікорського”
O. BEZVESILNA, Y. KYRYCHUK, N. NAZARENKO
National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”
DOI: https://www.doi.org/10.31891/2307-5732-2020-285-3-21
Рецензія/Peer review : 05.05.2020 р.
Надрукована/Printed : 05.06.2020 р.
Анотація мовою оригіналу
В роботі отримано математичну модель роботи нового двоканального п’єзоелектричного гравіметра та виведено основне робоче рівняння руху автоматизованої аерогравіметричної системи із двоканальним п’єзоелектричним гравіметром. Отримане рівняння руху двоканального п’єзоелектричного гравіметру перетворене у вигляд, зручний для подальшого моделювання на ЕОМ.
Ключові слова: коливальна система, коефіцієнт демпфірування, двоканальний п’єзогравіметр.
Розширена анотація англійською мовою
The work is focused on obtaining a mathematical model of the new dual – channel piezoelectric gravimeter and formulation of the basic working equation of motion of an automated aerogravimetric system with a two – channel piezoelectric gravimeter. Under the action of gravity acceleration on the sensitive mass of a dual-channel piezoelectric gravimeter oscillatory system forced oscillations spring up. The oscillation system of the gravimeter consists of an inertial mass, a damping element and a stiffness element. The air that creates resistance to the motion of the inertial mass in our case acts as a damping element. The gravimeter stiffness element is characterized by the elastic properties of the elastic element. A new two-channel piezogravimeter has been proposed for substential improvement of the accuracy of the automated aerogravimetric system. The possibility to achieve the piezogravimeter accuracy of the automated aerogravimetric system in 1 mGal, by compensating of instrumental errors is demonstrated (the influence of the environment, the influence of humidity changes, temperature and pressure, the influence of inaccuracy in the manufacture of piezoelectric packs of both channels). The obtained equation of a dual-channel piezoelectric gravimeter motion is transformed into a form suitable for further modeling on a computer. The oscillating system considered in the work is effective under certain conditions of motion of the inertial mass in the inertial frame of reference occurs along the vertical axis perpendicular to the plane of installation of the piezoelectric gravimeter; the force of elasticity is within the limits of possible oscillations and proportional to the deformation of the elastic element; the mass of the elastic element is insignificant and much less than the inertial mass; the mass of the sensing element, the coefficient of elasticity and damping are constant through the time; all components of the piezoelectric gravimeter are undamped. The equations of motion of a piezoelectric gravimeter for each channel were determined taking into account the conditions of location on the Earth.
Keywords: oscillating system, damping coefficient, dual-channel piezogravimeter.
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