scholarly journals Formalization, estimation of algorithmic complexity and a method for solving the problem of choosing system-technical solutions for the creation (development) of distributed information-control systems

Author(s):  
Viktor Lyaskovskii ◽  
◽  
Igor Bresler ◽  
Mihail Alasheev ◽  
◽  
...  
2018 ◽  
Vol 18 ◽  
pp. 01005
Author(s):  
Victor L. Lyaskovsky ◽  
Igor B. Bresler ◽  
Mihail A. Alasheev

The article contains the results of research aimed at developing a scientific and methodological framework for justifying solutions for the development of distributed information-control systems of an organizational type. The structuring of the initial data is made, a formalized statement of the problem of justifying solutions for the development of distributed information-control systems of the organizational type is proposed. To solve this problem, a scientific-methodical approach is proposed, which includes methods for assessing the effectiveness of the solution and the individual indicators.


Author(s):  
Georgiy Pyatibratov ◽  
◽  
Oleg Kravchenko ◽  
Dmitriy Bogdanov ◽  
Azamat Bekin ◽  
...  

The history of the creation and the stages of development of domestic simulators for training cosmonauts to work in conditions of weightlessness and low gravity of the planets of the solar system are analyzed. The principles of construction of simulators with the use of the force-compensating principle, which provide on the Earth the imitation of the motion of astronauts in zero gravity, are considered. The features of the implementation of simulators of different generations and the stages of development of their electromechanical force-compensating systems are given. The directions for further improvement of control systems and possible technical solutions for the creation of promising simulators for training cosmonauts to solve new problems in the implementation of lunar and Martian space exploration programs are determined.


Author(s):  
Boris Ya. Likhttsinder

The problems of control and management of geographically distributed objects are considered. The sensor networks operating on the ZigBee technology are considered. The characteristics of the 802.15.4 ZigBee standard are given. The advantages of this technology are shown when building networks that are not very critical to traffic delays. The elements of such a network are considered. The primary converters used in such networks and their energy characteristics are considered. The issues of reducing and compensating delays in control circuits are considered. It is shown that modern wireless sensor networks can be considered as distributed information measuring and information control systems.


Dependability ◽  
2019 ◽  
Vol 19 (4) ◽  
pp. 45-52
Author(s):  
A. М. Zamyshliaev

Aim.The digital transformation of the traffic safety management system in JSC RZD involves top-level integration with the operating processes of all business units in terms of integral assessment of the risk of possible events and achievement of specified indicators. The result will be the merger of the traffic safety management system with the processes of all levels of the company’s management enabled by an integrated intelligent system for managing processes and services whose functionality includes real-time traffic safety management.Methods. The paper uses system analysis of existing approaches and methods of processing of large quantities of structured and unstructered data.Results. The paper examines the development stages of train traffic safety management, as well as automated information and control systems that enable traffic safety management. General trends in the creation of systems for collection and processing of information are analyzed. The applicability of such technologies as Big Data, Data Mining, Data Science as part of advanced control systems is shown. The paper examines the performance of the above technologies by analyzing the effect of various factors on the average daily performance of a locomotive, where, at the first level, such factors as average daily run of a locomotive, average trainload are taken into consideration; at the second level, the focus is on the service speed, locomotive turnover at station, etc.; at the sixth level, the focus is on the type of locomotive, its technical state, etc. It is shown that statistical methods of factor analysis and link analysis combined with such other methods of Data Mining as methods of simulation and prediction, the average daily performance of a locomotive can be planned proactively. The author proposes a procedure of migration towards a digital traffic safety management system that would be based on models of interaction of safety and dependability factors of all railway facilities at all railway levels of hierarchy, as well as in association with other factors that have no direct relation to dependability, yet affect the safety of the transportation process.Conclusions. The primary benefit of migration towards Big Data consists in the development of a dynamic model of traffic safety, the elimination of human factor in control systems. Most importantly, it enables the creation within the Russian Railways company (JSC RZD) of an integrated intelligent process and service management system that enables real-time traffic safety management. An extensive process of development and deployment within the company of the URRAN Single Corporate Platform (SCP) enabled executive decision support as regards risk-based functional dependability and safety of transportation facilities. Thus, the URRAN SCP sets the stage for the digital transformation of the traffic safety management system in JSC RZD.


2013 ◽  
pp. 184-210
Author(s):  
Atef Gharbi ◽  
Hamza Gharsellaoui ◽  
Mohamed Khalgui ◽  
Antonio Valentini

The authors study the safety reconfiguration of embedded control systems following component-based approaches from the functional level to the operational level. At the functional level, a Control Component is defined as an event-triggered software unit characterized by an interface that supports interactions with the environment (the plant or other Control Components). They define the architecture of the Reconfiguration Agent, which is modelled by nested state machines to apply local reconfigurations. The authors propose technical solutions to implement the agent-based architecture by defining UML meta-models for both Control Components and also agents. At the operational level, a task is assumed to be a set of components having some properties independently from any real-time operating system. To guarantee safety reconfigurations of tasks at run-time, the authors define service and reconfiguration processes for tasks and use the semaphore concept to ensure safety mutual exclusions. They apply the priority ceiling protocol as a method to ensure the scheduling between periodic tasks with precedence and mutual exclusion constraints.


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