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In the paper, is present the shaking table designed for the laboratory use, to simulate the earthquakes behaviors. With this equipment we can study the dynamic behavior of civil engineering structures subjected to seismic motion. The vibratory movement of the shaking table is carried out by means of an electric motor which, through a crank mechanism, moves the shaking table. The smooth start of the shaking table and its movement is accomplished through a frequency converter, FRENIC-Mini series of general use, made by Fuji Electric C. Ltd. Tests was performed using a NI application with a laser displacement sensor, in order to find out the displacement precision.

The rectangular waveguide is the most common type of transmission line in millimeter, centimeter, and short-wave part of decimeter range. It allows to transmit quite significant levels of power with a small attenuation, is broadband and mechanically strong. The mode of operation of the transmission line is characterized by a number of parameters, which during its operation are subject to control and are maintained within certain limits by the prescribed adjustments. In order to study waves in a rectangular waveguide for educational purposes, it is often enough to simulate a computer model that can replace a complex of valuable equipment. In this work, a virtual table in a LabView environment, which allows to carry out simulation in order to determine electromagnetic wave parameters in a rectangular waveguide, is synthesized. For a wave of a given type with arbitrary coupling of m and n indices propagating over a waveguide with given geometric dimensions of the cross section, it is possible to determine critical wavelength or critical frequency. Also, the developed virtual toolkit allows to investigate the dispersion in the waveguide, to estimate the value of losses in the waveguide and the efficiency, to determine, separately for the waves of E and H types, characteristic resistance of the waveguide and reflection coefficient. Analytical expressions are obtained to calculate the breakdown power of a waveguide in the propagation of waves of E and H types, which are also implemented as appropriate virtual instruments. The developed virtual toolkit allows to organize distance learning. The synthesized virtual table is a convenient tool for studying the parameters and characteristics of a rectangular waveguide, and when used in the learning process, it will contribute to improving the understanding of the physical processes occurring in the propagation of wavelengths of E and H types in the waveguide., У роботі синтезовано віртуальний стенд у середовищі LabView, який дає можливість провести імітаційне моделювання для визначення параметрів електромагнітної хвилі в прямокутному хвилеводі. Для хвилі заданого типу з довільним сполученням індексів m і n, що поширюється по хвилеводу з заданими геометричними розмірами поперечного перетину, можна визначати критичну довжину хвилі або критичну частоту. Також розроблений віртуальний інструментарій дає змогу досліджувати дисперсію в хвилеводі, оцінювати величину втрат у хвилеводі та коефіцієнт корисної дії, визначати окремо для хвиль Е і Н типів характеристичний опір хвилеводу і коефіцієнт відбиття. Отримано аналітичні вирази для розрахунку пробивної потужності хвилеводу при поширенні хвиль Е і Н типів, які також реалізовано у вигляді відповідних віртуальних інструментів. Розроблений віртуальний інструментарій дозволяє організувати дистанційне навчання

роботі синтезовано віртуальний стенд у середовищі LabView, який дає можливість провести імітаційне моделювання для визначення параметрів електромагнітної хвилі в прямокутному хвилеводі. Для хвилі заданого типу з довільним сполученням індексів m і n, що поширюється по хвилеводу з заданими геометричними розмірами поперечного перетину, можна визначати критичну довжину хвилі або критичну частоту. Також розроблений віртуальний інструментарій дає змогу досліджувати дисперсію в хвилеводі, оцінювати величину втрат у хвилеводі та коефіцієнт корисної дії, визначати окремо для хвиль Е і Н типів характеристичний опір хвилеводу і коефіцієнт відбиття. Отримано аналітичні вирази для розрахунку пробивної потужності хвилеводу при поширенні хвиль Е і Н типів, які також реалізовано у вигляді відповідних віртуальних інструментів. Розроблений віртуальний інструментарій дозволяє організувати дистанційне навчання. The rectangular waveguide is the most common type of transmission line in millimeter, centimeter, and short-wave part of decimeter range. It allows to transmit quite significant levels of power with a small attenuation, is broadband and mechanically strong. The mode of operation of the transmission line is characterized by a number of parameters, which during its operation are subject to control and are maintained within certain limits by the prescribed adjustments. In order to study waves in a rectangular waveguide for educational purposes, it is often enough to simulate a computer model that can replace a complex of valuable equipment. In this work, a virtual table in a LabView environment, which allows to carry out simulation in order to determine electromagnetic wave parameters in a rectangular waveguide, is synthesized. For a wave of a given type with arbitrary coupling of m and n indices propagating over a waveguide with given geometric dimensions of the cross section, it is possible to determine critical wavelength or critical frequency. Also, the developed virtual toolkit allows to investigate the dispersion in the waveguide, to estimate the value of losses in the waveguide and the efficiency, to determine, separately for the waves of E and H types, characteristic resistance of the waveguide and reflection coefficient. Analytical expressions are obtained to calculate the breakdown power of a waveguide in the propagation of waves of E and H types, which are also implemented as appropriate virtual instruments. The developed virtual toolkit allows to organize distance learning. The synthesized virtual table is a convenient tool for studying the parameters and characteristics of a rectangular waveguide, and when used in the learning process, it will contribute to improving the understanding of the physical processes occurring in the propagation of wavelengths of E and H types in the waveguide

In this paper, the effect of applying dc voltage and dc current sources in using the potentiometric method on the accuracy and the uncertainty of the resistance measurements is studied. This study is done practically for the low and high values of standard resistance ranges from 100 to 10 MΩ. The traceability chain for the used resistors is introduced by using the standard resistors 1 Ω Thomas type, 10 kΩ model SR104, and four Hamon transfer standards. The system operation is remotely controlled by using a LabVIEW program to improve the performance. The measurement results and the uncertainty estimation values are discussed to identify the effect of the applied voltage and current on the different resistance ranges measurement.

Fused silica cylindrical resonant gyroscope (CRG) is a novel high-precision solid-wave gyroscope, whose performance is primarily determined by the cylindrical resonator&rsquo, s frequency split and quality factor (Q factor). The laser Doppler vibrometer (LDV) is extensively used to measure the dynamic behavior of fused silica cylindrical resonators. An electrical method was proposed to characterize the dynamic behavior of the cylindrical resonator to enhance the measurement efficiency and decrease the equipment cost. With the data acquisition system and the designed signal analysis program based on LabVIEW software, the dynamic behavior of the fused silica cylindrical resonator can be analyzed automatically and quickly. We compared all the electrical measurement results with the optical detection by LDV, demonstrating that the fast Fourier transform (FFT) result of the resonant frequency measured by the electrical method was 0.12 Hz higher than that with the optical method. Thus, the frequency split measured by the electrical and optical methods was the same in 0.18 Hz, and the measurement of the Q factor was basically the same in 730,000. We conducted all measurements under the same operation condition, and the optical method was used as a reference, demonstrating that the electrical method could characterize the dynamic behavior of the fused silica cylindrical resonator and enhance the measurement efficiency.

Full-field optical coherence tomography (FFOCT) acquires image data in parallel. It has a big advantage in high-speed imaging because 2-dimensional mechanical raster scanning in the sample arm, which is essentially needed in a common fiber-based OCT system, does not exist anymore. Swept-source FFOCT (SSFFOCT) further makes the system free of depth scanning that significantly increases the operation speed. National Instrument's LabVIEW is a powerful tool to fast develop optical-electronic systems which have motion/vision units, signal processing functions and easy-to-generate Graphic User Interface (GUI). In this paper, we describe the design and implementation of Labview program prepared for an SSFFOCT system. Basically, there are four modules of Labview programming in such a system: 1. Wavelength sweeping control; 2. Synchronized image grabbing; 3. SSFFOCT signal processing; 4. 3-dimensional tomogram displaying mode selection. A general graphic user interface is used to input the parameters and monitor all necessary data and curves. The tomographic images can be displayed at any given cutting direction. More details and examples are provided and discussed. © 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE)., Photonics North 2011, May 16-18, 2011, Ottawa, Ontario, Canada, Series: Proceedings of SPIE; no. 8007

A portable Runaway Electron Imaging and Spectrometry System (REIS) was developed in ENEA-Frascati to measure synchrotron radiationspectra from in-flight runaway electrons in tokamaks. The REIS is a wide-angle optical system collecting simultaneously visible and infraredemission spectra using an incoherent bundle of fibers, in a spectral range that spans from 500 nm to 2500 nm, and visible images using a CCDcolor microcamera at a rate of 25 frames/s. The REIS system is supervised and managed using a dedicated LabVIEW program to acquire datasimultaneously from three spectrometers every 20 ms (configurable down to 10 ms). An overview of the REIS architecture and acquisitionsystem and resulting experimental data obtained in FTU are presented and discussed in this paper. This work was carried out within the framework of the EUROfusion Consortium (Project No. MST2-15: Runaway Electron Imaging) and received funding from the Euratom research and training programme 2014–2018 under Grant Agreement No. 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission. The authors would like to thank M. Turnyanskiy, responsible officer for this EUROfusion project, for his continuous support and encouragement throughout this work. Publicado