Mathematical Model and Automatic Control System of Hot-Blast Stove

1987 ◽  
Vol 20 (8) ◽  
pp. 437-442 ◽  
Author(s):  
Y. Matoba ◽  
K. Otsuka ◽  
Y. Ueno ◽  
M. Onishi
2016 ◽  
Vol 3 (1) ◽  
pp. 15-23
Author(s):  
Mareks Šlihta ◽  
Vladimirs Šestakovs ◽  
Ramachandran Karunanidhi

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.


2017 ◽  
pp. 72-78
Author(s):  
Sergey Pachkin ◽  
Sergey Pachkin ◽  
Roman Kotlyarov ◽  
Roman Kotlyarov

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.


2020 ◽  
Vol 11 (87) ◽  
Author(s):  
Mykhailo Vasyliev ◽  
◽  
Oleksandr Brunetkin ◽  

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.


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