Кафедра "Загальна електротехніка"

Постійне посилання колекціїhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/2838

Офіційний сайт кафедри http://web.kpi.kharkov.ua/ze

Кафедра "Загальна електротехніка" заснована в 1931 році на базі електротехнічного факультету.

Курс електротехніки як самостійної дисципліни першим почав читати Клобуков Микола Петрович ще в 1892 році. Першим завідувачем кафедри був професор Копняєв Павло Петрович.

Кафедра входить до складу Навчально-наукового інституту енергетики, електроніки та електромеханіки Національного технічного університету "Харківський політехнічний інститут" .

У складі науково-педагогічного колективу кафедри працюють: 2 доктора технічних наук, 5 кандидатів технічних наук; 2 співробітника мають звання професора, 3 – доцента.

Переглянути

Фільтри

2020 - 20212

Налаштування

Автор: search.filters.author.Neyezhmakov, P.ORCID: search.filters.orcid.https://orcid.org/0000-0003-0704-5909

Результати пошуку

Зараз показуємо 1 - 2 з 2
  • Ескіз
    Документ
    Optimal data processing in the ballistic laser gravimeter under the effect of correlated interference
    (Національний науковий центр "Інститут метрології", 2021) Omelchenko, А.; Vinnichenko, O.; Neyezhmakov, P.; Fedorov, А.; Bolyukh, V.
    In order to develop optimal data processing algorithms in ballistic laser gravimeters under the effect of correlated interference, the method of generalized least squares is applied. In this case, to describe the interference, a mathematical model of the autoregression process is used, for which the inverse correlation matrix has a band type and is expressed through the values of the autoregression coefficients. To convert the “path-time” data from the output of the coincidence circuit of ballistic laser gravimeters to a process uniform in time, their local quadratic interpolation is used. Algorithms for data processing in a ballistic gravimeter, developed on the basis of a method of weighted least squares using orthogonal Hahn polynomials, are considered. To implement a symmetric measurement method, the symmetric Hahn polynomials, characterized by one parameter, are used. The method of mathematical modelling is used to study the gain in the accuracy of measuring the gravitational acceleration by the synthesized algorithms in comparison with the algorithm based on the method of least squares. It is shown that auto seismic interference in ballistic laser gravimeters with a symmetric measurement method can be significantly reduced by using a mathematical model of the second-order autoregressive process in the method of generalized least squares. A comparative analysis of the characteristics of the algorithms developed using the method of generalized least squares, the method of weighted least squares and the method of ordinary least squares is carried out.
  • Ескіз
    Документ
    Reduction of auto seismic oscillations of the ballistic laser gravimeter on account of the excitation of the induction-dynamic catapult by a pulse packet
    (Національний науковий центр "Інститут метрології", 2020) Bolyukh, V.; Vinnichenko, O.; Neyezhmakov, P.; Omelchenko, A.
    In order to reduce auto seismic oscillations in the ballistic laser gravimeters (BLG) with a symmetric method of mea suring the gravitational acceleration (GA), an induction-dynamic catapult (IDC) is used, which is excited by a pulse packet from a capacitive energy storage unit (CES). With such excitation, a decrease in the amplitude of auto seismic oscillations is achieved by reducing the amplitude and increasing the duration of action of the electrodynamic force that occurs in the IDC when pushing the test body (TB). A mathematical model of the IDC of the ballistic laser gravimeter with a symmetric method of measuring the GA is developed and the modeling of its electromechanical characteristics is carried out. Various methods of generating a packet of excitation pulses of the IDC inductor are considered and the characteristics of electrodynamic force pulses that accelerate the armature of the catapult with TB are investigated for them. The effect of IDC excitation by a pulse packet on the auto seismic component of the GA measurement is investigated. It is shown that on account of the excitation of the IDC by a ten-pulse packet, the auto seismic component of the uncertainty of the GA measurement by ballistic gravimeters can be reduced several (3–5) times in comparison with the excitation of the catapult by a single pulse.