scholarly journals Aircraft Automatic Control System Failure and Flight Safety

2016 ◽  
Vol 3 (1) ◽  
pp. 15-23
Author(s):  
Mareks Šlihta ◽  
Vladimirs Šestakovs ◽  
Ramachandran Karunanidhi
Keyword(s):  
Mathematical Model ◽  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
Flight Safety ◽  
System Failure ◽  
Equipment Failure ◽  
Successful Completion ◽  
The Relationship

Abstract This article presents a mathematical model estimating the probability of successful completion of the aircraft’s flight in case of aviation equipment failure in flight. This paper shows the relationship between the aircraft’s automatic control system and flight safety. The calculations of probability are made for the successful completion of the flight on Boeing 737 aircraft when the automatic control system has failed.

scholarly journals IMPLEMENTATION OF THE METHODS OF IDENTIFICATION OF STATIC CONTROL OBJECTS

2017 ◽  
pp. 72-78
Author(s):  
Sergey Pachkin ◽  
Sergey Pachkin ◽  
Roman Kotlyarov ◽  
Roman Kotlyarov
Keyword(s):  
Mathematical Model ◽  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
Mathematical Description ◽  
Control Object ◽  
Parametric Identification ◽  
Identification Problem ◽  
Temperature Control System ◽  
The Mathematical Model

One of the main tasks solved in the development of automatic control systems is the identification of the control object, which consists in obtaining its mathematical description. The nature and type of the mathematical model is determined by the goals and tasks for which it will be used. In the present case, the aim of obtaining the model is the synthesis of an automatic control system. Proceeding from the requirements of control problems, the identification problem consists in determining the structure and parameters of the mathematical model that ensure the best similarity of the model and object responses to the same input action. The article considers the experimental method of obtaining a mathematical description of the control object based on the results of measuring its input and output parameters and then processing the obtained results. The control object is the EP10 emulator made by the Oven Company, which is a miniature furnace. The emulator is used in experimental research in the process of commissioning using thermostat controls, and also applicable for educational purposes as part of training and research stands. As a result of structural identification with subsequent adjustment of the coefficients with the help of parametric identification, a model of the control object in the form of a second order aperiodic link is obtained. Parameters and type of the mathematical model allowed to make calculations and determine the parameters of adjustment of the TRM251 PID-controller. The software implementation of the automatic control system in the MatLAB environment made it possible to evaluate transient processes in a closed system. Thus, the calculation and analysis of the automatic control system in the first approximation were made. The final result can be obtained at the stage of commissioning the automatic temperature control system in the EP10 emulator using adaptation algorithms.

scholarly journals DEVELOPMENT OF A MATHEMATICAL MODEL OF A COMPRESSOR UNIT FOR NATURAL GAS LIQUEFACTION

2020 ◽  
Vol 11 (87) ◽  
Author(s):  
Mykhailo Vasyliev ◽  
◽  
Oleksandr Brunetkin ◽  
Keyword(s):  
Mathematical Model ◽  
Control System ◽  
Natural Gas ◽  
Automatic Control ◽  
Automatic Control System ◽  
Theoretical Research ◽  
The Future ◽  
Natural Gas Liquefaction ◽  
Compressor Installation ◽  
The Moment

First of all, such a topic as compressors for liquefaction of natural gas is unfortunately not very well studied. Therefore, this publication will present a detailed study of this object. First of all, the object itself will be considered, what it consists of, what its properties are, how natural gas liquefaction processes take place in it. So first you need to fully study the object itself, and only then proceed to build its mathematical model, which in the future can be used for more detailed analysis, first theoretically and then for practical purposes. This will achieve great results in the construction of an automatic control system for the compressor for liquefaction of natural gas. So, first the object itself will be studied, and only then, based on the acquired knowledge, we will build a mathematical model that will be needed in the future to develop an automatic control system. Of course, if you do not fully study all the properties of the object, such as the physical processes that take place there and the properties of the compressor. And having already put together all the available information, we can have a complete picture of this object. And from this information that has been collected, we can finally move on to the development of a more detailed mathematical model, which will be, albeit simplified, but still close to reality. Only then, already having this mathematical model, you can move on to a more detailed study in theory. And after conducting theoretical research, it is possible to check all the results of the study on a mathematical model, which will help to understand whether they are effective. Because it is more profitable to check theoretical information on a mathematical model than to do it on a real object. This can be costly, and in the case of an installation such as a natural gas liquefaction compressor, it is very expensive. And therefore this mathematical model will be appropriate. This model can be used in a more detailed study of this object because at the moment there is no holistic picture for the dagono object. It will also be possible to apply this model to find the necessary laws of regulation which will help to increase productivity of the compressor installation for liquefaction of natural gas. And this model will help to solve this question and to establish full-fledged work on studying of the given compressor installation.

scholarly journals СИСТЕМА АВТОМАТИЧЕСКОГО УПРАВЛЕНИЯ БЕСПИЛОТНОГО ЛЕТАТЕЛЬНОГО АППАРАТА

2018 ◽  
Vol 9 (4) ◽  
Author(s):  
К. О. Габуев ◽  
В. О. Гонгало ◽  
Н. А. Кучеренко ◽  
А. И. Шипко
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Unmanned Aerial Vehicles ◽  
Unmanned Aerial Vehicle ◽  
Automatic Control System ◽  
Agricultural Sector ◽  
Aerial Vehicles ◽  
Aerial Vehicle ◽  
The Relationship

The article deals with the use of unmanned aerial vehicles as in industry in general and as in individual branches. The operation of unmanned aerial vehicles in the agricultural sector is described in more detail. The problems existing for today in this sector, as well as the methods of solving these problems with the help of unmanned technologies are given. The important interrelation between the automatic control system and its integration into unmanned aerial vehicles is explained. Detailed description of the technical component of the drone, as well as the relationship between each link of the technical means of automation. An example of the software through which the unmanned aerial vehicle is controlled is given

scholarly journals MODELLING AND ANALYSIS OF CARBON DIOXIDE CHEMISORPTION PROCESS AS OBJECT OF CONTROL

2017 ◽  
Vol 60 (8) ◽  
pp. 74
Author(s):  
Alexander A. Samarskiy ◽  
Alexander N. Labutin ◽  
Tatiana V. Labutina
Keyword(s):  
Carbon Dioxide ◽  
Mathematical Model ◽  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
System Structure ◽  
Pseudo First Order Reaction ◽  
Ideal Mixing ◽  
Object Of Control ◽  
The Mathematical Model

In article problems of modeling of carbon dioxide chemisorption process and its analysis as object of control are solved. Also, the recommendations on synthesis of automatic control system structure are provided. Based on system approach the main stages and tasks are formulated for the analysis of process of carbon dioxide chemisorption by potash solution as object of control. The solution of objectives is given in the example of nozzle absorber pilot plant. The mathematical model of the object is developed, the research of its static and dynamic characteristics is conducted, variables of a state values are defined for given inputs. The mathematical model of the object is constructed on the basis of assumptions about the sectional structure of the absorber. Each section is presented as an ideal mixing cell for both phases. It is assumed that the chemisorption process proceeds in the diffusion-kinetic area through a pseudo-first order reaction. It is established that the object is not linear on most dynamic channels. The linearized object model in space of states is synthesized. Matrixes of a state and control are defined. The assessment of stability of steady state, observability and controllability of the object is carried out. It is proved that the object has property of stability of the free movement. It is controllable in the state of space and is observed when only carbon dioxide output concentrations measured. Recommendations on automatic control system structure for the object are offered.Forcitation:Samarskiy A.A., Labutin A.N., Labutina T.V. Modelling and analysis of carbon dioxide chemisorption process as object of control. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2017. V. 60. N 8. P. 74-79.

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