OPTIMAL STRUCTURAL RESERVATION OF TECHNICAL SYSTEMS

Journal Title: Наука та прогрес транспорту - Year 2018, Vol 0, Issue 4

Abstract

Purpose. The purpose of the article is to give designers of highly reliable technical systems that do not have special knowledge in the field of optimization and programming skills, a simple and accessible mathematical tool for choosing the optimal solution for structural redundancy of systems. Methodology. The article poses the problem of optimal structural redundancy of technical systems. Two typical redundancy schemes are considered: a) a separate "hot" backup scheme; b) a separate "cold" backup scheme. The computational models for estimating the reliability of redundant systems are formulated. We offer optimization models that allow us to find a rational option for reserving a system that is being designed, taking into account conflicting requirements for its reliability and cost. These models are numerically implemented in the operating environment of the Excel spreadsheet as applied to the main object, consisting of 7 elements. The optimal variants of reserving this object according to the "hot" and "cold" separate reservation schemes are given. Findings. Calculated models for estimating reliability, as well as models for optimizing the systems reserved for the "hot" and "cold" separate backup schemes, have been developed. With the use of the Excel spreadsheet, the optimal options for reserving 7 element objects are found for separate "hot" and "cold" backups. Originality. New computational models for estimating the reliability of redundant systems are proposed, as well as optimization models developed on the basis of these, which are formulated using the decomposition of unknown initial problem of structural redundancy into binary components. In this case, the obtained optimization models belong to the class of problems of non-linear mathematical programming with binary variables, for the numerical solution of which (even for a sufficiently large dimension) well-known packages of applied computer programs, in particular, the MS Excel spreadsheet, are well adapted. Thus, the process of solving the initially very complicated problem of optimal structural redundancy is much simpler and reduced to performing elementary actions in the corresponding software interfaces. Practical value. The proposed calculation models for estimating the reliability of redundant systems, models for optimal structural redundancy, and the methodology for their formation, in order to simplify further numerical implementation, can be useful in solving problems of ensuring the reliability of technical systems in the early stages of their design.

Authors and Affiliations

S. N. Semenets, S. S. Nasonova, G. I. Semenets

Keywords

Related Articles

ДИНАМІКА РОЗВИТКУ, СУТНІСТЬ ТА ГАЛУЗЬ ЗАСТОСУВАННЯ ПРОСТОРОВИХ СТРУКТУРНО-ВАНТОВИХ СТАЛЕЗАЛІЗОБЕТОННИХ КОНСТРУКЦІЙ

Мета. У будівництві існує проблема, яка пов’язана з трудомісткістю робіт та перевитратами матеріалів у наслідок їх нераціонального використання. Це відбувається у наслідок низки причин, у тому числі невідповідність сучас...

MODELLING OF SAFETY-RELATED COMMUNICATIONS FOR RAILWAY APPLICATIONS

Purpose. The authors according to requirements of the standard valid for safety-related communication between interlocking systems (EN 50159) analyze the situation of message undetected which is transmitted across BSC ch...

МОДЕЛИ ОЦЕНКИ УРОВНЯ ЗАГРЯЗНЕНИЯ АТМОСФЕРЫ ПРИ ТРАНСПОРТИРОВКЕ СЫПУЧИХ ГРУЗОВ

Цель. Научная работа направлена на разработку 3D, 2D численных моделей для прогноза загрязнения атмосферы при транспортировке сыпучих грузов в железнодорожном вагоне. Методика. Для решения поставленной задачи разработаны...

WATER REALITY IN UKRAINE AND WORLDWIDE

Purpose. The paper analyzes the state of water management in Ukraine and worldwide, as well as the best practices in this area. Methodology. The study was carried out based on the analysis of literature sources and repor...

METHODOLOGY OF DETERMINING THE PARAMETERS OF TRACTION ELECTRIC MOTOR FAILURES WHEN OPERATING TROLLEYBUSES

Purpose. The work is aimed to study the change in parameters of traction electric motors of trolleybuses during operation and improvement of the technical state control system, using modern diagnostic methods. Methodolog...

Download PDF file
  • EP ID EP401035
  • DOI 10.15802/stp2018/141008
  • Views 91
  • Downloads 0

How To Cite

S. N. Semenets, S. S. Nasonova, G. I. Semenets (2018). OPTIMAL STRUCTURAL RESERVATION OF TECHNICAL SYSTEMS. Наука та прогрес транспорту, 0(4), 60-67. https://europub.co.uk/articles/-A-401035