The problem of applying representative sets in problems of constructing domains of stability and quality of dynamic control systems

1996 ◽  
Vol 82 (3) ◽  
pp. 3409-3411
Author(s):  
F. D. Pryashnikov ◽  
A. I. Grushun ◽  
T. A. Grushun
Keyword(s):  
Control Systems ◽  
Dynamic Control

scholarly journals DEVELOPMENT OF STRUCTURAL SCHEMES AND OPERATION ALGORITHMS FOR THE AUTOMATIC CONTROL SYSTEM OF A MULTIFUNCTIONAL ENERGY COMPLEX

2021 ◽  
Vol 445 (1) ◽  
pp. 82-90
Author(s):  
G. Kalimbetov ◽  
A. Toigozhinovа ◽  
W. Wojcik
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Control Systems ◽  
Dynamic Control ◽  
Control Object ◽  
Control Device ◽  
Automatic Control Systems ◽  
Operating Modes ◽  
Quality Of Control

Among the promising automatic control systems, logical-dynamic control systems that change both the structure and parameters of the control device using switches formed on the basis of a certain logical algorithm have proven themselves well. The use of logical algorithms as part of MACS subsystems for complex technical objects makes it possible to increase the static and dynamic accuracy of control due to purposeful qualitative and quantitative changes in the control signal. This approach will give the control system fundamentally new properties that allow to fully take into account the nature and dynamics of the movement of the control object. When developing existing logical control algorithms, the issues of their application for multi-connected and multifunctional objects control were not considered. Common to existing logical algorithms is that when switching the structure and/or changing parameters, only the dynamics of its own subsystem is taken into account, which is unacceptable in the case of multi-connected dynamic object control, since cross-links have a significant impact on the quality of control. Thus, the problem of synthesis of logical algorithms for multi-connected objects control is an actual theoretical and applied problem. Despite the considerable amount of research conducted in this area, the application of logical algorithms for complex multidimensional objects control is not sufficiently considered, and there is no unified design concept for this type of MACS, taking into account the required quality of functioning in various operating modes. In this regard, there is a need to synthesize algorithms for logical multi-connected control that form control signals in order to coordinate the actions of all separate MACS subsystems in accordance with new external conditions and operating modes. The problem under consideration determined the purpose of this work and the research objectives.

scholarly journals Approximate Controllability of Sobolev Type Nonlocal Fractional Stochastic Dynamic Systems in Hilbert Spaces

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Mourad Kerboua ◽  
Amar Debbouche ◽  
Dumitru Baleanu
Keyword(s):  
Control Systems ◽  
Hilbert Spaces ◽  
Dynamic Systems ◽  
Approximate Controllability ◽  
Dynamic Control ◽  
Sufficient Conditions ◽  
Sobolev Type ◽  
Stochastic Dynamic ◽  
Deterministic Control ◽  
Stochastic Dynamic Systems

We study a class of fractional stochastic dynamic control systems of Sobolev type in Hilbert spaces. We use fixed point technique, fractional calculus, stochastic analysis, and methods adopted directly from deterministic control problems for the main results. A new set of sufficient conditions for approximate controllability is formulated and proved. An example is also given to provide the obtained theory.

scholarly journals THEORETICAL FUNDAMENTALS OF ESTIMATABILITY ASSESSMENT OF TRAIN SITUATION SIGNS FOR WORK OF INTELLECTUAL LOCOMOTIVE CONTROL SYSTEMS

2021 ◽  
Vol 1 (38) ◽  
pp. 223-231
Author(s):  
O. Gorobсhenko
Keyword(s):  
Control Systems ◽  
Random Search ◽  
Information Value ◽  
Train Control ◽  
Relative Value ◽  
Basic Parameters ◽  
Control Decision ◽  
Definition Of

The article is devoted to the problem of implementation of intelligent control systems in transport. An important task is to assess the information parameters of the control systems. In the existing works the question of definition of one of the basic parameters of functioning of locomotive control systems - information value of separate signs of a train situation is not considered. This does not make it possible to determine the order of signal processing at the input and assess their contribution to the adoption of a control decision. Moreover, informativeness is a relative value, which is expressed in the different information value of a particular feature for the classification of different train situations. Also, the informativeness of the feature may depend on the type of decisive rules in the classification procedure. The quality of recognition of a train situation in which the locomotive crew is, depends on the quality of the features used by the classification system. The decisive criterion for the informativeness of the features in the problem of pattern recognition is the magnitude of losses from errors. To determine the range of the most informative features of train situations, the method of random search with adaptation was used. The results of the work make it possible to optimize the operation of automated and intelligent train control systems by reducing the amount of calculations and simplifying their algorithm.

scholarly journals Pengaruh Kompetensi Sumber Daya Manusia, Sistem Pengendalian Intern, dan Pemanfaatan Teknologi Informasi terhadap Kualitas Laporan Keuangan (Studi pada Badan Pusat Statistik Wilayah Maluku)

2019 ◽  
Vol 5 (2) ◽  
pp. 75
Author(s):  
Jefry Jef Gasperz
Keyword(s):  
Information Technology ◽  
Control Systems ◽  
Internal Control ◽  
Financial Statements ◽  
Development Planning ◽  
Central Bureau ◽  
Primary Data ◽  
Financial Reports ◽  
Internal Control System

This study aims to examine the effect of human resource competence, government internal control system and the use of information technology on the quality of financial statements of Central Bureau of Statistics in the Maluku Region.The population in this study are employees who handle accounting / financial reports on all accounting entities within the Central Bureau of Statistics in the Maluku Region.The research sample is the financial statements stylist includes PPK , PPSPM, financial staff, equipment, program development (planning) or administration as well as employees in the technical field who make financial reports. The data analyzed are primary data obtained through questionnaires. Total questionnaires distributed amounted to 57 and processed as many as 50 questionnaires (87.72%). The analytical method used is the multiple regression analysis method.Hypothesis testing results indicate that the competence of human resources and government internal control systems has a positive and significant effect on the quality of financial statements while the use of information technology has no effect on the quality of financial statements. 

scholarly journals Quality of learners at the start of each educational process

2019 ◽  
Vol 9 (14) ◽  
Author(s):  
Abdennasser Naji
Keyword(s):  
Control Systems ◽  
Preventive Measures ◽  
Educational Process ◽  
Service Needs ◽  
True Value ◽  
Previous Cycle ◽  
Set Up ◽  
The One

The education system is organized in the form of cycles, each feeding the one following it with learners. They will continue their studies in the destination cycle, and their future will certainly depend, at least in part, on the quality of the skills acquired in the previous cycle. Given the divergences and disparities existing between the different cycles mainly due to the fact that each responds to its own design logic and in the absence of coordination between them, there is a huge lack of quality to gain at the interface of the cycles . The referral system that plays the role of supply service needs to be updated to strengthen educational quality, but it is not the only one. It is also necessary to help the orienting staff to assess the quality of the learners at its true value, to set up partnership links between the cycles to help each other in favor of quality, and to set up reception control systems at the entry of each cycle, supported by corrective and preventive measures.

scholarly journals Fatty Acids and Oxylipins as Antifungal and Anti-Mycotoxin Agents in Food: A Review

Toxins ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 852
Author(s):  
Mei Qiu ◽  
Yaling Wang ◽  
Lijun Sun ◽  
Qi Deng ◽  
Jian Zhao
Keyword(s):  
Fatty Acids ◽  
Control Systems ◽  
Molecular Mechanisms ◽  
Antifungal Agents ◽  
Recent Literature ◽  
Fungal Growth ◽  
Food Control ◽  
Fungal Contamination ◽  
Mycotoxigenic Fungi

Fungal contamination of food, especially by mycotoxigenic fungi, not only reduces the quality of the food, but can also cause serious diseases, thus posing a major food safety challenge to humans. Apart from sound food control systems, there is also a continual need to explore antifungal agents that can inhibit fungal growth and mycotoxin production in food. Many types of fatty acids (FAs) and their oxidized derivatives, oxylipins, have been found to exhibit such effects. In this review, we provide an update on the most recent literature on the occurrence and formation of FAs and oxylipins in food, their effects on fungal growth and mycotoxin synthesis, as well as the genetic and molecular mechanisms of actions. Research gaps in the field and needs for further studies in order to realizing the potential of FAs and oxylipins as natural antifungal preservatives in food are also discussed.

scholarly journals Iron ore sintering. Part 3: Automatic and control systems

DYNA ◽  
2015 ◽  
Vol 82 (190) ◽  
pp. 227-236 ◽  
Author(s):  
Alejandro Cores ◽  
Luis Felipe Verdeja ◽  
Serafín Ferreira ◽  
Íñigo Ruiz-Bustinza ◽  
Javier Mochón ◽  
...  
Keyword(s):  
Control Systems ◽  
Sintering Process ◽  
Iron Ore Sintering ◽  
Particle Matter ◽  
Automation And Control ◽  
Ore Sintering ◽  
Productivity Process ◽  
And Control ◽  
Plant Automation

The sintering process involves a large number of parameters, more than 500, each of which exerts a greater or lesser influence and needs to be controlled, within the possible limits, in order to optimise productivity, process stability, and standardise the composition and quality of the sinter produced. To comply with environmental legislation, a pollution control system must monitor the particle matter and gases generated and emitted into the atmosphere by the sinter plant. Automation and control systems are vital tools to assist plant operators in the monitoring of each stage of the sinter production process.

More from the Mill

2000 ◽  
Vol 122 (10) ◽  
pp. 82-87
Author(s):  
Michael Valenti
Keyword(s):  
Cold Rolling ◽  
Control Systems ◽  
Rolling Mill ◽  
Space Shuttle ◽  
State Of The Art ◽  
Steel Strip ◽  
Cold Rolling Mill ◽  
Automated Control ◽  
The World

This article focuses on the launch of Sputnik that transfixed the world by Carpenter Technology Corp. By incorporating advanced processing equipment, including a rolling mill, shape controller, annealing furnaces, wet grinders, and leveler with state-of-the-art automated control systems, Carpenter has improved the productivity and quality of its high value strip at a time when Space Shuttle launchings are taken in stride. The Carpenter specialty strip facility installed a cold rolling mill designed by Joseph Frohling GmbH of Olpe, Germany, in November last year, to increase rolling capacity and guarantee that the steel strip it produces meets the desired shape and thickness. In the Frohling mill, strip passes between two working rolls that reduce its thickness to sizes between 0.150 and 0.008 inch, at speeds up to 1500 feet per minute. Carpenter also installed three Ebner vertical annealing furnaces. Coiled strip on mandrels is unwound through each furnace, annealed, then rewound continuously to promote productivity.

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