METHODS OF PROLONGATION OF OPERATING LIFETIMES FOR COMPLEX TECHNICAL SYSTEMS LIKE MOVABLE MOUNTINGS OF SPECIAL PURPOSE

2019 ◽  
pp. 46-51
Author(s):  
V. M. Trukhanov ◽  
M. P. Kukhtik
Keyword(s):  
Probabilistic Method ◽  
Reliability Function ◽  
Technical State ◽  
Distribution Law ◽  
Method Of Calculation ◽  
Actual Load ◽  
Operating Lifetime ◽  
Complex Technical Systems ◽  
Technical Systems ◽  
Element Base

The article is devoted to the relevant issue of prolongation of operating lifetimes for complex technical systems like movable mountings of special purpose. The issues of mean and residual lives have been considered, mathematical models of mean and residual lives have been represented. Methods of prolongation of operating lifetimes for expensive objects of special purpose like movable mountings have been described. In particular, mathematical model of prolongation of operating lifetimes by the calculation and analytical method, which is based on of normal distribution law of actual load and durability, has been represented. The experimental method, which is based on analysis of actual technical state of element base and material, has been described. The probabilistic method of calculation of reliability function during prolonged operating lifetime taking into account actual technical state of element base has been represented.

scholarly journals Mathematical models and methods of prolongation of operating lifetimes for expensive objects

2019 ◽  
Vol 298 ◽  
pp. 00078
Author(s):  
Vladimir Trukhanov ◽  
Mikhail Kukhtik ◽  
Natal’ya Fyodorova
Keyword(s):  
Probabilistic Method ◽  
Reliability Function ◽  
Technical State ◽  
Distribution Law ◽  
Method Of Calculation ◽  
Actual Load ◽  
Operating Lifetime ◽  
Complex Technical Systems ◽  
The Mathematical Model ◽  
Element Base

The article is devoted to the relevant issue of prolongation of operating lifetimes for expensive objects. The methods of prolongation of operating lifetimes for complex technical systems have been described. In particular, the mathematical model of prolongation of operating lifetimes by the calculation and analytical method, which is based on normal distribution law of actual load and durability, has been represented. The experimental method, which is based on analysis of actual technical state of element base and material, has been described. The probabilistic method of calculation of reliability function during prolonged operating lifetime taking into account actual technical state of element base has been represented.

scholarly journals LOGICAL AND PROBABILISTIC METHOD FOR RISK MANAGEMENT IN SOCIO-ECONOMIC SYSTEMS

2017 ◽  
Vol 2 ◽  
pp. 58
Author(s):  
Vasily Karasev ◽  
Ekaterina Karaseva
Keyword(s):  
Portfolio Management ◽  
Banking Industry ◽  
Quantitative Estimation ◽  
Probabilistic Method ◽  
Economic Systems ◽  
Practical Applications ◽  
Complex Technical Systems ◽  
Technical Systems ◽  
Risk Scenario ◽  
Estimation Of Risk

In this paper we research the application of logical and probabilistic method to manage risk in socio-economic systems. Logical and probabilistic method is widely used for estimation of reliability and safety in structural complex technical systems. Authors have applied this method to estimate and analyze risk in some practical applications in economics and business. Based on risk scenario as tree of events, logics and probabilistic functions, this approach provides exact quantitative estimation of risk, risk analysis and decision-making procedures. Some promising results were obtained in banking industry and security portfolio management but application of the method has some features.

Knowledge representation in graph-models of complex technical systems

2020 ◽  
pp. 12-16
Author(s):  
Evgenia R. Muntyan
Keyword(s):  
Analytical Study ◽  
Level Structure ◽  
Graph Models ◽  
Level Data ◽  
Knowledge Formation ◽  
Different Types ◽  
Level Information ◽  
Complex Technical Systems ◽  
Technical Systems ◽  
Structure Of Knowledge

The article analyzes a number of methods of knowledge formation using various graph models, including oriented, undirected graphs with the same type of edges and graphs with multiple and different types of edges. This article shows the possibilities of using graphs to represent a three-level structure of knowledge in the field of complex technical systems modeling. In such a model, at the first level, data is formed in the form of unrelated graph vertices, at the second level – information presented by a related undirected graph, and at the third level – knowledge in the form of a set of graph paths. The proposed interpretation of the structure of knowledge allows to create new opportunities for analytical study of knowledge and information, their properties and relationships.

NETWORK MODELS AS A SOLUTION FOR COMPLEX TECHNICAL PRODUCT`S DIAGNOSING PROBLEMS SOLVING

2019 ◽  
pp. 38-42
Author(s):  
S. Yu. Strakhov ◽  
A. A. Karasev
Keyword(s):  
Complex System ◽  
System Analysis ◽  
Network Models ◽  
Functional Testing ◽  
Formal Models ◽  
Mathematical Apparatus ◽  
Complex Technical Systems ◽  
Technical Systems ◽  
Formalized Description ◽  
Diagnostic Software

Authors explore issue of applicability of the methodology of building diagnostic software using network formal models in the functional testing of electronic equipment as part of complex technical systems. Using methods of system analysis allows to perform a decomposition of interdependent subsystems and to reveal basic acts of interaction between the control‑verification equipment and the object of diagnosis. Mathematical apparatus of Petri nets should be employed for the formalized description of such acts and determined the cause‑and‑effect relations in the diagnosed complex system`s processes. Network models properties studying (such as safety and accomplishment of the final positions) allows us to move to the test object`s algorithm`s developing. The article presents an approach of a formalized description for basic acts of interaction between the diagnosis system and the object.

INTEGRATED ASSESSMENT OF STABILITY FUNCTIONING COMPLEX TECHNICAL SYSTEMS IN THE TECHNO AND INFO SPHERE

2018 ◽  
pp. 89-94
Author(s):  
V. A. Minaev ◽  
I. D. Korolev ◽  
V. V. Mukhortov
Keyword(s):  
Integrated Assessment ◽  
Noise Immunity ◽  
Maximum Intensity ◽  
Robotic Systems ◽  
Formal Definition ◽  
Protection Systems ◽  
Computer Attacks ◽  
Complex Technical Systems ◽  
Impact Protection ◽  
Technical Systems

The article deals with the issues of integrated assessment of complex technical systems stability functioning in techno sphere and info sphere. It is shown that the concept of cyber stability, including its components such as cyber reliability, noise immunity and cyber survivability are insufficiently investigated and defined. The formal definition is given and the scale with various gradation of cyber survivability is entered. On the example of robotic systems in form of drones two variants of mathematical models of cyber survivability estimation are considered. The first variant is related to the description of drones functioning in the conditions of computer attacks without impact protection systems. The second variant reflects the functioning of drones under the conditions of impacts in the presence of adaptive combined cybernetic protection system. In both variants, two strategies are considered - with minimal and maximum intensity of effects on the drone. It is concluded that proposed in the paper approach enables to evaluate the integrated stability of complex technical systems in the techno sphere and info sphere at the same time.

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