scholarly journals DEVELOPMENT OF INVARIANT MODELS OF NOMENCLATURE QUALITY INDICATORS OF COMPLEX TECHNICAL SYSTEM

2019 ◽  
Vol 1 (7) ◽  
pp. 53-59
Author(s):  
S. A. Nazarevich ◽  
V. G. Farafonov ◽  
A. V. Vinnichenko
Keyword(s):  
Quality Indicators ◽  
Product Innovation ◽  
Planning Horizon ◽  
Technical System ◽  
Civil Aviation ◽  
Design Documentation ◽  
Complex Technical System ◽  
Complex Technical Systems ◽  
Selection Of

The article describes the modernization of consumer characteristics, through the selection of the quality indicators nomenclature using cluster analysis, and bringing the complex technical system (CTS) model using the example of civil aviation technology (CAE) to an invariant form. Also, the article uses a methodological apparatus for assessing the degree of product innovation taking into account the total number of product technical characteristics presented by regulatory and design documentation for the products being created. The obtained characteristics were synthesized by translating consumer requirements of the main participants of the civil aviation equipment market segment. Taking into account the opinions of various consumer groups, five clusters were created and the basic structures of the model of a complex technical system were modeled. Applied technological device suitable for solving problems related to structured and classification of valuable technical characteristics with a planning horizon of 10 years various representatives of the company producing different brands of products related to complex technical systems of civil aviation equipment.

DIGITAL DESIGN OPTIMIZATION OF A COMPLEX TECHNOLOGICAL SYSTEM

2021 ◽  
Vol 3 ◽  
pp. 85-90
Author(s):  
A.R. ABLAEV ◽  
E.V. KHROMOV ◽  
R.R. ABLAEV ◽  
A.P. POLYAKOV
Keyword(s):  
Design Optimization ◽  
Level Structure ◽  
Phenomenological Approach ◽  
Digital Design ◽  
Technical System ◽  
Software Support ◽  
Complex Technical System ◽  
Complex Optimization ◽  
Complex Technical Systems ◽  
Technical Systems

The article investigates the issue of optimization of a complex technical system at the stage of its design using a heuristic–phenomenological approach. The analysis of the principles of complex optimization of complex technical systems is carried out. A four–level structure for the synthesis of methodological, informational and software support for complex optimization of complex technical systems is proposed, which will allow controlling the programmable parameters of complex technical systems at each stage of their design.

scholarly journals DEVELOPMENT OF BASIC STRUCTURE FOR QUALITY MANAGEMENT SYSTEM OF TREND POTENTIAL OF COMPLEX TECHNICAL SYSTEM OF UNMANNED AERIAL VEHICLES

2019 ◽  
Vol 1 (7) ◽  
pp. 46-52 ◽  
Author(s):  
V. M. Balashov ◽  
S. A. Nazarevich ◽  
A. V. Urentsev
Keyword(s):  
Life Cycle ◽  
Unmanned Aerial Vehicles ◽  
Quality Management System ◽  
Planning Horizon ◽  
Basic Structure ◽  
Aerial Vehicles ◽  
Complex Technical System ◽  
Complex Technical Systems ◽  
Technical Systems

In conditions when the volume of government orders for defense products may significantly decline, enterprises of the radioelectronic industry are faced with the need to move to civilian product markets, which will stabilize the order portfolio and reduce macroeconomic and technological risks. The article presents the main approaches to the analysis of the trend potential of complex technical systems on the example of unmanned aerial vehicles. Methods for assessing the quality of complex technical systems at different stages of the development of the potential of complex technical systems in the structure of the life cycle are proposed. A hypothetical fragment of a chronological analysis of the potential state of complex technical systems with a planning horizon of five to ten years is presented. The proposed approaches and mathematical models make it possible to predict the potential and to optimize the consumer characteristics of complex technical systems, based on the requirements of customers, the development of their needs, as well as on the implementation of advanced standardization.

scholarly journals The Synthesis of a Critical Infrastructure Object Model for Safe Operation of a Technical System Under the Conditions of Destructive Information Impact

2020 ◽  
pp. 48-56
Author(s):  
Aleksey Kubarev ◽  
◽  
Aleksey Lapsar’ ◽  
Alexander Asyutikov ◽  
◽  
...  
Keyword(s):  
Diffusion Processes ◽  
Information Infrastructure ◽  
Technical System ◽  
Evolutionary Models ◽  
Critical Information ◽  
Technical Requirements ◽  
Complex Technical System ◽  
Complex Technical Systems ◽  
Technical Systems ◽  
The Impact

The purpose of the article: improving the security and stability of the functioning of complex technical systems managed by critical information infrastructure objects under the conditions of a destructive information impact, using parameterized evolutionary models. Methods: synthesis of parametrized evolutionary models of significant objects of critical information infrastructure based on the Markov theory of estimation of multidimensional diffusion processes. The result: within the framework of an integrated approach to ensuring the security of complex technical systems, a parametrized evolutionary model of an object of a critical information infrastructure operating under conditions of destructive information impact has been synthesized. An approach to the development of recommendations for managing a complex technical system by means of an operational assessment of the main characteristics of the functioning of a critical information infrastructure object is proposed. A sequence has been developed for developing solutions for the operation of a complex technical system, based on an assessment of the impact level and the results of an operational calculation of the main characteristics of the functioning of a critical information infrastructure object. The results obtained make it possible to reasonably formulate technical requirements for the created or modernized means of ensuring the security of significant objects of critical information infrastructure that manage complex technical systems.

scholarly journals The formation of the maintenance program and its impact on the increased level of power plants reliability

2020 ◽  
Vol 8 (4) ◽  
pp. 27-40
Author(s):  
Živoslav Adamović ◽  
Mladen Ivić ◽  
Veljko Vuković
Keyword(s):  
Preventive Maintenance ◽  
Power Plants ◽  
Technical System ◽  
Condition Based Maintenance ◽  
Maintenance Program ◽  
System Maintenance ◽  
Complex Technical System ◽  
Selection Of

The paper emphasizes the basic attitudes of complex technical system maintenance programming. Particularly it is performed an analysis and a selection of strategies for condition-based maintenance. The assessment of the established maintenance program varieties effectiveness was carried out by comparison with their basic indicators of effectiveness (for corrective and preventive maintenance).

scholarly journals Research of reliability of urban electric transport system

2019 ◽  
Vol 124 ◽  
pp. 05078
Author(s):  
A.E. Auhadeev ◽  
R.S. Litvinenko ◽  
V.P. Fandeev ◽  
P.P. Pavlov ◽  
V.M. Butakov ◽  
...  
Keyword(s):  
Power Supply System ◽  
Electrical Equipment ◽  
Technical System ◽  
Rolling Stock ◽  
Electric Transport ◽  
Complex Technical System ◽  
Complex Technical Systems ◽  
Electric Traction ◽  
The Impact ◽  
Theoretical Foundations

Modern methods for analyzing and assessing the reliability of complex technical systems consider only its individual elements. The specifics of structural-functional interactions and integration into subsystems of different hierarchical levels are not taken into account. Studies show that analyzing the reliability of urban electric transport, also focus on individual components: the reliability of electric traction rolling stock, the reliability of the power supply system, the reliability of the track infrastructure, etc. The authors propose an approach that allows to consider urban electric transport as a complex technical system consisting of several levels that are hierarchically subordinate. Each level combines the components directly involved in the transmission and transformation of electric power into mechanical operation of the rolling stock under the influence of the external environment by means of traction electrical equipment. This approach will allow to develop the theoretical foundations of methods for analyzing the impact of the reliability of individual components of a complex technical system of urban electric transport on the effectiveness of the electric traction implementation.

scholarly journals Effectiveness retention ratio and its standardization

Dependability ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 3-8
Author(s):  
V. A. Netes
Keyword(s):  
Task Completion ◽  
Retention Ratio ◽  
Partial Failure ◽  
General Rules ◽  
Complex Technical System ◽  
Complex Technical Systems ◽  
Correct Application ◽  
Definition Of ◽  
The Relationship

Aim. To promote a better understanding, a wider and more correct application of the effectiveness retention ratio. That is the measure that is best suited for assessing the dependability of complex technical systems, in which partial failures are possible that put a system into intermediate states between complete up and down ones. Methods. The paper uses the methods of the probability theory and comparative analysis of texts of interstate (Euro-Asian), Russian and international dependability-related standards. Results. The principal contribution of Russian researchers to the creation and development of methods for applying effectiveness indicators to estimating the dependability of complex systems is pointed out. Shortcomings were identified in the basic dependability-related standards as regards the effectiveness retention ratio and related concepts. Namely, in terminology standard GOST 27.002–2015, the phrases that require improvement are indicated. They relate to the concepts of partial failure, partial up state and partial down state. A broader and more ac[1]curate definition of partial failure is suggested. It is noted that the relationship between partially up and partially down states are to be discussed and clarified. GOST 27.003–2016 that establishes the content and general rules for specifying dependability requirements contains wording errors in the classification of items according to the number of possible (taken into consideration) states and in the examples of possible variants of the effectiveness retention ratio in various branches of technology that are probabilities of task completion, etc. The paper suggests corrections to the appropriate wordings. It has been established that although the effectiveness retention ratio is not referred to in the international dependability-related terminology standard (IEC 60050-192:2015), it implicitly appears in two IEC standards (IEC 61703:2016 and IEC 62673:2013), in which it is assigned to availability measures. Conclusion. The paper’s findings will be useful to experts involved in the assessment and standardization of complex technical system dependability. Their implementation will help improve interstate, Russian and international dependability-related standards.

scholarly journals Hybridization of fuzzy time series and fuzzy ontologies in the diagnosis of complex technical systems

2019 ◽  
pp. 252-259
Author(s):  
N G Yarushkina ◽  
V S Moshkin ◽  
I A Andreev ◽  
G I Ishmuratova
Keyword(s):  
Time Series ◽  
The State ◽  
Technical System ◽  
Fuzzy Time Series ◽  
Formal Description ◽  
Fuzzy Ontology ◽  
Complex Technical System ◽  
Complex Technical Systems ◽  
Technical Systems ◽  
Ontological Model

The article provides a formal description of fuzzy ontologies and features of the representation of elements of fuzzy axioms in FuzzyOWL notation. An ontological model for assessing the state of helicopter units has been developed. According to the proposed approach, the summarizing of the state of a complex technical system is carried out by means of an inference based on a fuzzy ontology. As part of this work, experiments were conducted to search for anomalous situations and search for possible faulty helicopter units using the developed approach to the integration of fuzzy time series and fuzzy ontology. The proposed approach of hybridization of fuzzy time series and fuzzy ontologies made it possible to reliably recognize anomalous situations with a certain degree of truth, and to find possible faulty aggregates corresponding to each anomalous situation.

scholarly journals System risk assessment based on the probabilistic model “exposure-susceptibility” at the enterprises of storage and processing of vegetable agricultural products

2021 ◽  
Vol 937 (3) ◽  
pp. 032073
Author(s):  
A Cheremisin ◽  
Y Esipov ◽  
S Traypichkin ◽  
A Bukreeva
Keyword(s):  
Risk Assessment ◽  
Initial Data ◽  
Probabilistic Model ◽  
Technical System ◽  
Agricultural Products ◽  
System Risk ◽  
Complex Technical Systems ◽  
Technical Systems ◽  
Security Costs ◽  
Selection Of

Abstract At present, elements of probabilistic safety and risk assessment have been introduced into the design and analysis of complex technical systems, one of the main disadvantages of which is the difficulty due to the selection of initial data in the form of probabilities of initiating events. As a consequence, the use of known methodologies for quantifying risk can lead to either underestimation of threats or unreasonably high security costs. On the example of an enterprise for the storage and processing of vegetable agricultural products, an approach was considered for assessing the risk of a technical system based on the probabilistic model “exposure-susceptibility”.

Use of photodynamic therapy for photodamage skin (review of literature)

2019 ◽  
Vol 1 (7) ◽  
pp. 19-23
Author(s):  
S. I. Surkichin ◽  
N. V. Gryazeva ◽  
L. S. Kholupova ◽  
N. V. Bochkova
Keyword(s):  
Photodynamic Therapy ◽  
Comparative Evaluation ◽  
Clinical Manifestations ◽  
Light Sources ◽  
Review Of Literature ◽  
Photosensitizing Agents ◽  
Selection Of

The article provides an overview of the use of photodynamic therapy for photodamage of the skin. The causes, pathogenesis and clinical manifestations of skin photodamage are considered. The definition, principle of action of photodynamic therapy, including the sources of light used, the classification of photosensitizers and their main characteristics are given. Analyzed studies that show the effectiveness and comparative evaluation in the selection of various light sources and photosensitizing agents for photodynamic therapy in patients with clinical manifestations of photodamage.

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