МЕТОДИ І ЗАСОБИ АВТОМАТИЧНОГО ВИРІВНЮВАННЯ АМПЛІТУД ГАРМОНІЧНИХ СИГНАЛІВ В СИСТЕМАХ ВИМІРЮВАННЯ МАЛИХ ФАЗОВИХ ЗСУВІВ

2020 ◽  
pp. 1-8
Author(s):  
Ігор Бучма ◽  
Keyword(s):  
Computer Modeling ◽  
Signal Amplitude ◽  
Voltage Divider ◽  
Metrological Characteristics ◽  
Harmonic Signals ◽  
Automatic Amplitude

The article considers the automatic amplitude equalizer of harmonic signals based on a controlled voltage divider, its computer modeling. The errors of signal amplitude alignment are estimated. Possible ways to improve the metrological characteristics of the equalizer are indicated.

Computer modeling of evaluation of metrological characteristics of the measure of phase shift

2019 ◽  
Vol 0 (2) ◽  
pp. 69-73
Author(s):  
Світлана Анатоліївна Затока ◽  
Богдан Миколайович Шуба
Keyword(s):  
Phase Shift ◽  
Computer Modeling ◽  
Metrological Characteristics

Computer modeling of the metrological characteristics ofγ-spectrometric radiation monitors

Atomic Energy ◽  
1995 ◽  
Vol 78 (2) ◽  
pp. 141-143
Author(s):  
I. A. Gaponov ◽  
G. V. Zykov ◽  
A. M. Chernyaev ◽  
S. I. Emel'yanov
Keyword(s):  
Computer Modeling ◽  
Metrological Characteristics ◽  
Radiation Monitors

scholarly journals DEFINITION OF THE SHAFTS RADIAL BEATING CAPACITIVE SENSOR RESPONSE FUNCTION BY COMPUTER MODELING

2021 ◽  
Vol 2021 (58) ◽  
pp. 107-112
Author(s):  
V.O. Bereznychenko ◽  
Keyword(s):  
Computer Modeling ◽  
Response Function ◽  
Capacitive Sensor ◽  
Sensor Response ◽  
Metrological Characteristics ◽  
Element Analysis ◽  
Modeling Tools ◽  
Simulation Tools ◽  
Simulation Results ◽  
Definition Of

The paper presents the results study the characteristics of capacitive beating sensors to optimize them by computer simulation tools using. A concentric capacitive sensor with high-potential and grounded electrodes was studied. In the course of the research, the expediency of using computer modeling tools by finite element analysis methods to study the metrological characteristics of sensors was shown. It is shown that the application of modeling makes it possible to reduce the time spent on studies of the transformation function and metrological characteristics. The picture of the distribution of equipotential lines of an electric field in a working backlash of the sensor has resulted. The simulation results make it possible to create a picture of equipotential lines by changing the distance between the total surface of the sensor electrodes and the grounded surface, simulating the surface of the shaft. The results of the definition of the response function are given. References 23, figures 5.

100 KV Scanning Microscope

1972 ◽  
Vol 30 ◽  
pp. 472-473 ◽  
Author(s):  
A. V. Crewe ◽  
M. W. Retsky
Keyword(s):  
High Voltage ◽  
Voltage Divider ◽  
Electron Gun ◽  
Objective Lens ◽  
Parallel Beam ◽  
Emission Point ◽  
Error Amplifier ◽  
External Reference ◽  
Scanning Transmission ◽  
Transmission Microscope

A 100 kv scanning transmission microscope has been built. Briefly, the design is as follows: The electron gun consists of a field emission point and a 3 cm Butler gun. The beam has a crossover outside the gun and is collimated by a condenser lens.The parallel beam passes through a defining aperture and is focused by the objective lens onto the specimen. The elastic electrons are detected by two annular detectors, each subtending a different angle, and the unscattered and inelastic electrons are collected by a third detector. The spectrometer that will separate the inelastic and unscattered electrons has not yet been built.The lens current supplies are stable to within one part per million per hour and have been described elsewhere.The high voltage is also stable to 1 ppm/hr. It consists of the raw supply from a 100 kv Spellman power supply controlled by an external reference voltage, high voltage divider, and error amplifier.

The Effects of Variable-Interval and Fixed-Interval Signal Presentation Schedules on the Auditory Evoked Response

1969 ◽  
Vol 12 (1) ◽  
pp. 199-209 ◽  
Author(s):  
David A. Nelson ◽  
Frank M. Lassman ◽  
Richard L. Hoel
Keyword(s):  
Variable Interval ◽  
Tone Burst ◽  
Signal Amplitude ◽  
Fixed Interval ◽  
Interval Schedule ◽  
Sensation Level ◽  
Fixed Interval Schedule ◽  
Auditory Evoked Responses ◽  
Auditory Evoked Response ◽  
Signal Presentation

Averaged auditory evoked responses to 1000-Hz 20-msec tone bursts were obtained from normal-hearing adults under two different intersignal interval schedules: (1) a fixed-interval schedule with 2-sec intersignal intervals, and (2) a variable-interval schedule of intersignal intervals ranging randomly from 1.0 sec to 4.5 sec with a mean of 2 sec. Peak-to-peak amplitudes (N 1 — P 2 ) as well as latencies of components P 1 , N 1 , P 2 , and N 2 were compared under the two different conditions of intersignal interval. No consistent or significant differences between variable- and fixed-interval schedules were found in the averaged responses to signals of either 20 dB SL or 50 dB SL. Neither were there significant schedule differences when 35 or 70 epochs were averaged per response. There were, however, significant effects due to signal amplitude and to the number of epochs averaged per response. Response amplitude increased and response latency decreased with sensation level of the tone burst.

Computer modeling of the mitral valve for planning of complex repairs

2013 ◽  
Vol 61 (S 01) ◽  
Author(s):  
CJ Beller ◽  
I Baxter ◽  
K Kallenbach ◽  
T Mesana ◽  
M Labrosse
Keyword(s):  
Mitral Valve ◽  
Computer Modeling

Computer Modeling-Assisted Design And Synthesis Of Flavonols Derivatives As Proteasome Inhibitors

Planta Medica ◽  
2016 ◽  
Vol 82 (05) ◽  
Author(s):  
KY Orabi ◽  
MS Abaza ◽  
KA ElSayed ◽  
AY Elnagar ◽  
SI Faggal ◽  
...  
Keyword(s):  
Computer Modeling ◽  
Proteasome Inhibitors ◽  
Design And Synthesis

The Role of Computer Modeling in Electrocardiography

1990 ◽  
Vol 29 (04) ◽  
pp. 282-288 ◽  
Author(s):  
A. van Oosterom
Keyword(s):  
Electrical Activity ◽  
Computer Modeling ◽  
Body Surface ◽  
Electrical Current ◽  
The Body ◽  
Volume Conductor ◽  
Current Generator ◽  
Cardiac Electrical Activity ◽  
Source Models

AbstractThis paper introduces some levels at which the computer has been incorporated in the research into the basis of electrocardiography. The emphasis lies on the modeling of the heart as an electrical current generator and of the properties of the body as a volume conductor, both playing a major role in the shaping of the electrocardiographic waveforms recorded at the body surface. It is claimed that the Forward-Problem of electrocardiography is no longer a problem. Several source models of cardiac electrical activity are considered, one of which can be directly interpreted in terms of the underlying electrophysiology (the depolarization sequence of the ventricles). The importance of using tailored rather than textbook geometry in inverse procedures is stressed.

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