scholarly journals FUZZY MODEL OF THE OPERATIONAL POTENTIAL CONSUMPTION PROCESS OF A COMPLEX TECHNICAL SYSTEM

2020 ◽  
Vol 18 (3) ◽  
pp. 453
Author(s):  
Michał Pająk
Keyword(s):  
Fuzzy Model ◽  
Technical System ◽  
Technical State ◽  
Model Quality ◽  
Operation Process ◽  
Time Histories ◽  
Complex Technical System ◽  
Working Parameters ◽  
The Impact ◽  
Operational Potential

During the operation process of a system its technical state is changed. The changes take place because of the wearing factors impact. The impact depends on the flow and intensity of the operation process what is characterized by the time histories of the working parameters. Simultaneously, the changes of the technical state are correlated with the changes of the amount of the operational potential included in a system. In order to avoid the inability state occurrence the amount of this potential should be higher than the boundary value. The amount of the operational potential included in a system is determined by the values of the cardinal features of it but in the case of the real technical system the values cannot always be measured. Therefore, the amount of the operational potential and the technical state of the system cannot always be determined online. To solve this problem the model of the operational potential consumption process was created and presented in the paper. The model uses artificial intelligence techniques to calculate the change of the operational potential amount by determining the changes of the cardinal features of the system on the basis of the time histories of the working parameters. The verification of the model quality was performed using the pulverized boiler OP-650k-040 operating in the power plant. The description of the conducted research and the results of the verification were presented in the end of the paper proving the adequacy of the model implementation in the case of industrial objects.

scholarly journals Identification of the operating parameters of a complex technical system important from the operational potential point of view

2017 ◽  
Vol 232 (1) ◽  
pp. 62-78 ◽  
Author(s):  
Michał Pająk
Keyword(s):  
Point Of View ◽  
Technical System ◽  
Technical State ◽  
Universal Method ◽  
Operational Parameters ◽  
State Evaluation ◽  
Evaluation Point ◽  
Time Histories ◽  
Complex Technical System ◽  
Operational Potential

The most important processes which take place in a technical system are the operation and service processes. Knowing the actual technical state of the system, it is possible to make a decision whether the system can operate or should be serviced. The efficiency of the system operation and the possibility of the failure occurrence strongly depend on the relevancy of this decision. The technical state of the system is described by the system features affected by the time histories of its operational parameters. Unfortunately, the amount of the operational parameters can be significant. Therefore, it becomes purposeful to identify the operational parameters significant from the system technical state evaluation point of view. In the article, the universal method of the significant operational parameters identification and the research carried out in a real industrial system to verify its correctness and the accuracy are presented.

scholarly journals Automatic method of the technical state changes model generation

2021 ◽  
Vol 351 ◽  
pp. 01001
Author(s):  
Michał Pająk
Keyword(s):  
Technical State ◽  
Technical Diagnostics ◽  
Model Generation ◽  
Automatic Method ◽  
Operational Parameters ◽  
Operation Process ◽  
Time Histories ◽  
Complex Technical System ◽  
State Changes ◽  
Real Complex

One of the main objectives of technical diagnostics is identification the technical state of the machine. The technical state is described by the values of the object cardinal features. Unfortunately, during the operation process, some of the values of these features cannot be measured. It is proposed to estimate the values of the cardinal features based on their initial values and the influence of the forcing factors described by the time histories of the parameters of the operation process. Due to the limited knowledge of the correlation between operational parameters and forcing factors it was modelled in form of fuzzy Mamdani models. In the paper universal automatic method of the models generation was presented. Thanks to it, it was possible to generate the model of the technical state changes in automatic manner. The results of the usage of the generated model in case of real complex technical system can be found at the end of the paper.

scholarly journals Integrated model of port oil piping transportation system safety including operating environment threats

2017 ◽  
Vol 42 (1) ◽  
pp. 131-142
Author(s):  
Krzysztof Kołowrocki ◽  
Ewa Kuligowska ◽  
Joanna Soszyńska-Budny
Keyword(s):  
General Model ◽  
Transportation System ◽  
Integrated Model ◽  
Technical System ◽  
Operating Environment ◽  
System Safety ◽  
Safety Function ◽  
Operation Process ◽  
Safety Parameters ◽  
Complex Technical System

Abstract The paper presents an integrated general model of complex technical system, linking its multistate safety model and the model of its operation process including operating environment threats and considering variable at different operation states its safety structures and its components safety parameters. Under the assumption that the system has exponential safety function, the safety characteristics of the port oil piping transportation system are determined.

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 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.

The Impact Assessment of the Managed Motorway on M25 Junction 5 to 7

2011 ◽  
Vol 66-68 ◽  
pp. 692-696
Author(s):  
Sui Chao ◽  
Ling Tao Wu ◽  
Jian Yun Chen
Keyword(s):  
Impact Assessment ◽  
State Of The Art ◽  
Technical State ◽  
Current Implementation ◽  
The Impact

This study introduces the transport situation and polices of the highway agency for the M25. Then the current implementation of the Managed Motorway on M25 between junction 5 and junction 7 is reviewed, and some examples are given in this paper. Then a technical state-of-the-art of application is also reviewed. After that, the requirements for integration with complementary systems and polices are presented. Finally, this paper discusses the arguments for and against taking this application forward.

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.

Testing the validity of different synthetic scenarios for flow and transport simulation in karst systems using a real case study application. 

2021 ◽  
Author(s):  
Joanna Doummar ◽  
Nidal Farran ◽  
Marwan Fahs ◽  
Benjamin Belfort ◽  
Thomas Graf
Keyword(s):  
Real Case ◽  
Richards Equation ◽  
Model Quality ◽  
Transient Model ◽  
Flow And Transport ◽  
Event Time ◽  
Model Flow ◽  
Karst Systems ◽  
The Impact

<p>Climate change and pollution are posing additional unprecedented threats to existing water resources, especially to water supply from karst aquifers in Mediterranean and semi-arid regions. A numerical model considering the most important key hydraulic parameters can forecast the impact of any given input on model quality and quantity output. In this work, we propose to model flow and transport using Comsol multiphysics in a synthetic model and to apply it to a simplified real case study (Jeita spring in Lebanon supplying water to 1.5 million inhabitants). The model geometry consists of a 5300 m long variably saturated horizontal conduit portrayed as 1) 2-D continuum and/or 2) a channel draining a porous equivalent matrix (400 m thick). Flow is simulated using the Richards Equation in both saturated and unsaturated medium. Recharge is applied vertically as both diffuse and point source in a shaft linked to the conduit. Percentages of fast infiltration rates are obtained from the analysis of event time series recorded at the spring (electrical conductivity and discharge). Flow rates at the outlet are used for transient model calibration. Mean velocities, dispersivities, and phreatic conduit diameters obtained from tracer experiments under various flow periods are used for transport validation in the channel. The aim is to test the validity of a functional simplified flow model on a complex real case and to identify based on a sensitivity analysis the key parameters that allow an optimal calibration of such a model. </p>

scholarly journals Bottlenecks, Modules, and Dynamic Architectural Capabilities

2018 ◽  
Author(s):  
Carliss Y. Baldwin
Keyword(s):  
Property Rights ◽  
Value Creation ◽  
Technical System ◽  
Maximum Effect ◽  
Organizational Boundaries ◽  
Value Capture ◽  
Technical Problems ◽  
Technical Architecture ◽  
Complex Technical System ◽  
Technical Systems

How do firms create and capture value in large technical systems? In this paper, I argue that the points of both value creation and value capture are the system’s bottlenecks. Bottlenecks arise first as important technical problems to be solved. Once the problem is solved, Then the solution in combination with organizational boundaries and property rights can be used to capture a stream of rents. The tools a firm can use to manage bottlenecks are, first, an understanding first of the technical architecture of the system; and, second, an understanding of the industry architecture in which the technical system is embedded. Although these tools involve disparate bodies of knowledge, they must be used in tandem to achieve maximum effect. Dynamic architectural capabilities provide managers with the ability to see a complex technical system in an abstract way and change the system’s structure to manage bottlenecks and modules in conjunction with the firm’s organizational boundaries and property rights.

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