scholarly journals МЕТОД РОЗРАХУНКУ ФУНКЦІЇ РОЗПОДІЛУ ПАРАМЕТРІВ КОНТРОЛЮ РАДІОНАВІГАЦІЙНИХ КОМПЛЕКСІВ ЗАСОБІВ ВОДНОГО ТРАНСПОРТУ

2019 ◽  
pp. 76-84
Author(s):  
Олена Анатоліївна Дакі
Keyword(s):  
Water Transport ◽  
Quantitative Characteristic ◽  
Technical Condition ◽  
Technical State ◽  
Navigation Systems ◽  
Automated Control ◽  
Radio Navigation ◽  
Accuracy Of Measurements ◽  
Navigation Equipment ◽  
Electronic Elements

The article shows that the use of modern navigation systems and complexes for controlling the movement of water transport vehicles allows for safe navigation. It is substantiated that the proper work of navigation equipment – radio navigation complexes – depends on their technical condition. Thus, the presence in the radio navigation complexes of water transport facilities of a large number of electronic elements and radio channels and the aggressive environment of their operation increase the role of methods and instruments for monitoring and diagnosing the technical state of the radio navigation complexes during operation to ensure the trouble-free operation of water transport facilities. In determining the technical state of the radio navigation complexes of water transport vehicles there is a known contradiction in the control of complex systems of control: the provision of a given reliability of information about the technical state of the radio navigation complexes of the movement of water transport means requires an increase in the volume and accuracy of measurements in assessing their characteristics on one side, on the other - methods for automating the process of synthesizing the measurement signals and processing feedback on them for this. Within this contradiction, the actual scientific problem is the development of methods for synthesizing measurement signals and processing reviews on them to increase the reliability and efficiency of automated control of the technical state of the radio navigation systems for controlling the movement of water transport vehicles. The purpose of this work is to develop a method for calculating the function of distribution of parameters of control of radio navigation complexes of water transport vehicles. The conditional distribution function is proposed, which is the main quantitative characteristic of the control of the radio navigation complexes of water transport facilities. This feature contains all the information about the control parameters and allows you to determine the technical state of the radio navigation complexes. The method of calculating the function of distribution of parameters of control of radio navigation complexes of water transport means is developed. Such a method is proposed to be used in substantiating the characteristics of the measuring signals of the control of the radio navigation complexes of the means of water transport during operation

scholarly journals МЕТОДИ СИНТЕЗУ ВИМІРЮВАЛЬНИХ СИГНАЛІВ З НОРМОВАНИМ СПЕКТРОМ

2019 ◽  
pp. 89-98
Author(s):  
Олена Анатоліївна Дакі
Keyword(s):  
Complex Systems ◽  
Water Transport ◽  
Traffic Control ◽  
Technical Condition ◽  
Technical State ◽  
Automated Control ◽  
Radio Navigation ◽  
Accuracy Of Measurements ◽  
Methods Of Synthesis ◽  
Radio Systems

It is known that the requirements for the efficiency and quality of carrying out operations for controlling the technical condition of complex systems are increasing due to the transfer of systems and objects to operation in a state of technical condition. In the article the presence in the practice of controlling the technical condition of complex systems of contradiction is considered, namely, the provision of the given reliability of information about the technical state of the radio navigation complexes of the traffic control of water transport means requires an increase in the volume and accuracy of measurements in evaluating their characteristics on the one hand, and on the other - the lack of methods for automating processes the synthesis of the measurement signals and processing feedback on them for this. Traditional measurement signals for monitoring the technical condition of radio systems are sinusoidal oscillations. However, this approach requires a considerable workload of control and leads to a reduction in the efficiency of its conduct due to the need to introduce inertial blocks to increase impedance protection. Avoid this disadvantage is possible due to the use of multi-frequency signals with a normalized spectrum - polyharmonic signals. They represent the sum of a certain number of useful harmonics, modulated signals with a normalized spectrum and different forms of binary signals. Therefore, the actual scientific problem is the development of methods of synthesis of polar harmonic measuring signals and processing of reviews on them to increase the reliability and efficiency of automated control of the technical condition of radio systems. According to the results of the analysis of measuring signals and known methods for the synthesis of measuring signals, the results of the study of the subject area, which include the study of the methods of synthesis of measuring signals with the normalized spectrum, are proposed in order to improve the process of automated control of the technical state of radio systems. In addition, features of the experimental verification of the obtained theoretical results and the development of recommendations for their implementation for the automated control of the technical state of the radio navigation complexes for controlling the movement of water transport vehicles are presented

scholarly journals МЕТОД ДИНАМІЧНОГО ПРОГРАМУВАННЯ ЩОДО СИНТЕЗУ ВХІДНОГО ВИМІРЮВАЛЬНОГО СИГНАЛУ ДЛЯ КОНТРОЛЮ ТЕХНІЧНОГО СТАНУ РАДІОНАВІГАЦІЙНИХ КОМПЛЕКСІВ

2019 ◽  
pp. 57-63
Author(s):  
Олена Анатоліївна Дакі
Keyword(s):  
Dynamic Programming ◽  
Water Transport ◽  
Traffic Control ◽  
Complex Form ◽  
Technical State ◽  
Dynamic Programming Method ◽  
Navigation Systems ◽  
Radio Navigation ◽  
Measuring Signal ◽  
Method Of Dynamic Programming

The article shows that the use of modern navigation systems and complexes for controlling the movement of means of water transport makes it possible to ensure safe navigation. It is substantiated that the proper functioning of the means of navigation support – radio navigation complexes – depends on their technical condition. The work substantiates and investigates mathematical expressions for calculating the parameters of input measuring signals for controlling the technical state of radio navigation complexes. The results of the analysis of methods for determining the technical state of radio electronic devices are presented, based on studies of their dynamic characteristics. It has been shown that inertial units (elements) are used to increase the noise immunity coefficient of radio navigation complexes, which increases the time to control the harmonic signal of a sinus or cosine type. It is possible to avoid this disadvantage by using test signals with a normalized spectrum, representing the sum of a certain number of useful harmonics – test signals of complex form. The purpose of the article is to develop a method of dynamic programming for the synthesis of the input measurement signal for monitoring the state of the radio navigation complexes of the means of water transport. The obtained recurrence ratio can be used to determine the characteristics of a measuring signal in the case of continuous monitoring of the output signal. To do this, you need to replace the integral in the expression for the synthesis criterion with the corresponding integral sum. The method of dynamic programming when using personal computers in comparison with other methods has the advantage since it allows you to use a cyclic program in calculations. However, although in the dynamic programming method at each stage it is necessary to calculate and memorize only one function, with a considerable amount of coordinates (with a significant amount of control parameters and rather complex systems and complexes of navigation and traffic control of sea vessels), the volume of calculations can be very large.

scholarly journals ОСОБЛИВОСТІ АВТОМАТИЗАЦІЇ КОНТРОЛЮ ТЕХНІЧНОГО СТАНУ МОРСЬКОГО ТРАНСПОРТУ

World Science ◽  
2019 ◽  
Vol 1 (3(43)) ◽  
pp. 19-25
Author(s):  
Коломієць Оксана Михайлівна
Keyword(s):  
Water Transport ◽  
A Priori ◽  
Technical Condition ◽  
Software Implementation ◽  
Effective Strategy ◽  
Kutta Method ◽  
A Priori Information ◽  
Automated Control ◽  
Runge Kutta Method ◽  
Priori Information

The article analyzes the principles of automation of the control of the technical condition of water transport vehicles, which has been determined: the principle of coherence; the principle of integration; Principle of independence of execution.It is determined that the most effective strategy is to improve the methods of automated control of the technical condition of water transport vehicles, which, unlike existing ones, is based on Markov processes, the Runge-Kutta method of numerical solution of the system of Kolmogorov differential equations and a priori information about the intensity of transitions from state to state.Using the software implementation of the model significantly improves performance due to the ergonomics of the interface and reduced number of operations.

ABOUT AUTOMATION OF CONTROL AND DIAGNOSIS OF TECHNICAL STATE OF HYDRAULIC DRIVES OF INDUSTRIAL EQUIPMENT

2021 ◽  
pp. 19-24
Author(s):  
V. V. Bodrov ◽  
R. M. Bagautdinov ◽  
M. E. Goydo
Keyword(s):  
Hydraulic Drive ◽  
Technical Condition ◽  
Technical State ◽  
Industrial Equipment ◽  
Automated Control ◽  
Operating Modes ◽  
Hydraulic Equipment

The main tasks of automated control and diagnostics of the technical condition of hydraulic drives are formulated, criteria for assessing the technical condition of a hydraulic drive as a whole and its individual devices are considered, examples of test operating modes for hydraulic drives with a guide and proportional hydraulic equipment are given.

scholarly journals Methodical manual for flight according to PBN

2021 ◽  
Author(s):  
Andrej Novák ◽  
◽  
František Jůn
Keyword(s):  
Theoretical Background ◽  
Simulator Training ◽  
Practical Training ◽  
Theoretical Knowledge ◽  
Navigation Systems ◽  
Radio Navigation ◽  
The Third ◽  
Satellite Navigation Systems ◽  
The University ◽  
Navigation Equipment

Work dealing with the professional topic of PBN issues and its use within the University of Žilina in Žilina. The division of the work is 4 content units, each of which describes a different area of the issue. In the first chapter, the author analyzes certified navigation devices and their functionality within the PBN concept. The chapter describes the basic radio navigation equipment, which we include in the concept of PBN, namely VOR, DME, but also satellite navigation systems GNSS, ABAS, GBAS, SBAS. And in summary, use of these systems in the PBN concept. The next chapter describes the theoretical knowledge that a student should have in flight according to PBN. It describes the theoretical background that a pilot needs to perform such a flight. Every pilot who starts practical flying should have studied the facts given in this chapter. In the third chapter, the reader will learn about the differences between flying a real aircraft and between simulator flying during PBN training. It describes the execution of the flight according to PBN, which is helpful before starting the simulator training. The simulator is an important part of the training and should therefore be given the same level of attention. The last part of this work summarizes the facts from the previous chapters and uses this knowledge in their implementation in flight procedures. When reading this chapter, it is necessary to use your knowledge of practical training. The aim of this work is to create a framework for the future methodological manual for PBN training. The main goal of this work is to bring the issue closer to the reader, to acquaint him with the issue of PBN flying.

Analysis of Influence of Ephemeris-Time Information on Accuracy of Solving a Navigation Problem by Signals of GLONASS System

2020 ◽  
Vol 25 (5) ◽  
pp. 465-474
Author(s):  
V.O. Zhilinskiy ◽  
◽  
D.S. Pecheritsa ◽  
L.G. Gagarina ◽  
◽  
...  
Keyword(s):  
High Precision ◽  
Satellite Navigation ◽  
Satellite System ◽  
Navigation Systems ◽  
Navigation Problem ◽  
Satellite Navigation System ◽  
Study Results ◽  
Accuracy Of Measurements ◽  
Huge Impact ◽  
Time Information

The Global Navigation Satellite System has a huge impact on both the public and private sectors, including the social-economic development, it has many applications and is an integral part of many domains. The application of the satellite navigation systems remains the most relevant in the field of transport, including land, air and maritime transport. The GLONASS system consists of three segments and the operation of the entire system depends on functioning of each component, but primarily, the accuracy of measurements depends on the basis forming of the control segment and management, responsible for forming ephemeris-time information. In the work, the influence of ephemeris-time information on the accuracy of solving the navigation problem by the signals of the GLONASS satellite navigation system has been analyzed. The influence of both ephemeris information and the frequency information, and of the time corrections has been individually studied. The accuracy of the ephemeris-time information is especially important when solving the navigation problem by highly precise positioning method. For the analysis the following scenarios of the navigation problem solving have been formed: using high-precision and broadcast ephemeris-time information, a combination of broadcast (high-precision) ephemeris-time information, and high-precision (broadcast) satellite clock offsets and two scenarios with simulation of the calculation of the relative correction to the radio signal carrier frequency. Based on the study results it has been concluded that the contribution of the frequency-time corrections to the error of location determination is of the greatest importance and a huge impact on the error location, while the errors of the ephemeris information are insignificant

The influence of unintentional radio interference on the equipment operation quality of satellite radio navigation systems consumers

2020 ◽  
pp. 165-170
Keyword(s):  
Underlying Surface ◽  
Navigation Systems ◽  
Signal Attenuation ◽  
Radio Navigation ◽  
Equipment Operation ◽  
Atmospheric Noise ◽  
Detection Mode ◽  
Signal Mode ◽  
Cosmic Noise

The analysis an influence of reflections from the underlying surface, atmospheric noise, the Earth’s surface, cosmic noise and signal attenuation of the signal the atmosphere, as well as the flight dynamics of the aircraft (AC) on the signal/noise ratio and, accordingly, on the accuracy of AC navigation definitions by using consumer equipment of the satellite radio navigation systems. The analysis an influence of reflections from the underlying surface on the equipment operation quality of the satellite radio navigation systems consumers is carried out by using the Beckman model, in accordance with the earth’s surface appears to consist of flat faces with an arbitrary slope. It is noted that reflections from the underlying surface have a greater effect on the quality of functioning of the consumer equipment of the satellite radio navigation systems in the tracking signal mode than in the detection mode. In this case, the influence of reflections increases with decreasing flight altitude and an increase in the angle of heel of the AC in the direction of the navigation spacecraft.

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