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Безпечний пристрій сполучення з індукційним мажоритарним реле

Безпечний пристрій сполучення з індукційним мажоритарним реле

Abstract

One of the tasks solved in the development of control systems is the interfacing of microelectronic equipment with actuators. Its complexity is largely determined by the requirements for the reliability of the designed systems, and in particular, functional safety. The most common method of significantly improving the reliability of automation systems is redundancy [1], therefore, control computing systems of critical control systems are designed to be multi-channel. In such systems, interface devices (ID) perform several functions: they implement the control logic adopted in this system, “reducing” the control signals from the outputs of individual redundancy channels to one; carry out direct switching of control circuits of objects. In railway automation systems, in addition, the ODR should with an acceptable probability eliminate the false activation of actuating objects in case of any failure of the elements of the interface device, as well as elements in the output circuits of the control channels [2]. Since the cost of control systems is proportional to the number of backup channels, the search for a compromise between the acceptable performance characteristics of the systems and their price has led to the fact that two-channel and three-channel structures operating according to scheme 2 of 2 and 2 of 3 are most widely used. It is this logic that the most common devices implement. However, the analysis of known circuit engineering, algorithmic solutions that provide both contactless and relay pairing of control computer complexes with objects suggests that they have a number of significant drawbacks, so the task of finding other solutions remains relevant [5]. This article proposes a design, substantiates the possibility and expediency of using three-element induction relays in the ID, functioning on the principle of a three-phase asynchronous motor and capable of implementing control logic 2 of 2, 2 of 3 with high functional safety indicators

В статье предложен принцип действия и структура безопасного мажоритарного устройства сопряжения (УСО) резервируемых систем управления с исполнительными объектами, способного реализовывать логику управления 2 из 2, 2 из 3 с высокими показателями функциональной безопасности; обоснована возможность и целесообразность использования в составе УСО трехэлементных индукционных реле, функционирующих по принципу трехфазного асинхронного двигателя; сформулированы требования к их параметрам; предложена электрическая схема функциональных преобразователей УСО и схема подключения мажоритарного реле к их выходам.

У статті запропоновано принцип дії і структуру безпечного мажоритарного пристрою сполучення (ПС) резервованих систем керування з виконавчими об’єктами, здатного реалізовувати логіку керування 2 з 2, 2 з 3 з високими показниками функційної безпечності; обґрунтовано можливість і доцільність використання в складі ПС трьохелементних індукційних реле, що функціонують за принципом трифазного асинхронного двигуна; сформульовано вимоги до їх параметрів; запропоновано електричну схему функціональних перетворювачів ПС і схему підключення мажоритарного реле до їх виходів. 

Keywords

majority element; majority device; majority backup device; induction relay; safe interface, мажоритарний елемент; мажоритарний пристрій; пристрій мажоритарного резервування; індукційне реле; безпечний пристрій сполученн, мажоритарный элемент; мажоритарное устройство; устройство мажоритарного резервирования; индукционное реле; безопасное устройство сопряжения

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold