scholarly journals Analytical justification of the automatic control system of the technological process of post-harvesting root and onion

2021 ◽  
pp. 79-83
Author(s):  
Alexei Semenovich Dorokhov ◽  
Aleksey Viktorovich Sibiriev ◽  
Alexander Gennadievich Aksenov ◽  
Nikolay Viktorovich Sazonov

It is marked that the applied technical means of automation of machine-technological complexes for the production of agricultural products differ significantly from those conventionally taken as ideal, in this regard, it is necessary to develop requirements for the accuracy and reliability of the measuring information of the automatic control system of technical means of machine production of onions, carrots and beets, the implementation of which will allow reduce the initial level of uncertainty through the use of information extracted from observations of the controlled object in the course of its normal functioning.

2014 ◽  
Vol 556-562 ◽  
pp. 2356-2358
Author(s):  
Yi Zhen Liu ◽  
Xian Yu Deng ◽  
Jing Yu

The technological process of water treatment automatic control of the steelmaking converter, hardware and software design of the control system are introduced in this paper. The design and realization of water supply automatic control system are based on the S7-400 Programmable Logic Controller.


2017 ◽  
Vol 5 ◽  
pp. 3-12
Author(s):  
Andrii Simanenkov

The possibility of introducing PIDD2 controllers into adaptive automatic control systems using the proposed algorithm for finding the optimum adjusting parameters of the specified controller is considered. The carried out analysis of the structural implementation of the PIDD2 controller and the estimation of the filter time constants of the first and second order differentiation units made it possible to formulate the structure of the PIDD2 controller-based adaptive automatic control system. The proposed algorithm for finding the optimum adjusting parameters of the PIDD2 controller consists in a purposeful procedure for finding the optimal point with the maximum value of the transfer factor of the controller in the parameter space, taking into account the preset stability margin. In determining the steps of the algorithm, the structural and parametric optimization of the filters of the differentiation links is performed, which make it possible to reduce the problem only to the search for adjusting parameters of the controller. The work of the proposed algorithm is illustrated by the example of an automatic control system, where the mathematical model of the heat exchanger unit of the fuel combustion engine of the internal combustion engine is the controlled object. Analysis of transient processes and frequency responce of the simulated system shows the qualitative superiority of the adaptive automatic control system with the optimally tuned PIDD2 controller over the conventional automatic system with a PID controller. The versatility of the algorithm and the ability to periodically adjust the adjustments of the controller are also noted.


Author(s):  
Sh Rakhmanov ◽  
N Azizova ◽  
D Abdullaeva ◽  
A Abduganiev ◽  
A Akbaraliev ◽  
...  

2021 ◽  
Vol 2 (11(75)) ◽  
pp. 64-67
Author(s):  
A. Korotinsky ◽  
A. Shaposhnik ◽  
L. Zhuchenko

The work is aimed at solving the applied problem of developing an automatic control system for the evaporator using the principle of D-partition. Since there is always uncertainty in real problems, the solution of the problem of synthesis of the control system is reduced to the synthesis of a robust regulator. As a result, the area of robust stability of the object was obtained and an array of PI controller settings was formed, which ensures the stability of the object in the entire range of uncertainty.


2003 ◽  
Vol 3 ◽  
pp. 297-307
Author(s):  
V.V. Denisov

An approach to the study of the stability of non-linear multiply connected systems of automatic control by means of a fast Fourier transform and the resonance phenomenon is considered.


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