The Solution of Applied Problems of Optimization of Stability of System "Environment-Man-Technics"

Abstract

Justified the application of the basic principles of the theory of dynamical systems in the study of the elemental balance of system "environment-man-technique" (EMT). It is established that the irreducibility of the system properties to the sum of the properties of its constituents leads to contradictions. The aim of the research is the development of methods to detect contradictions in the system EMT by assessing the consistency of its elements. The methodological base of the adopted theoretical generalization of scientific provisions of the leading scientists of the industry, constituting the content of the theory of machines. When solving the tasks, we used methods of systems theory, the theory of mathematical statistics, the theory of risk and catastrophe theory, methods of similarity and dimensions. Empirical dependences were based on regression analysis and are presented in the dimensionless form. In the process of research assessed the consistency of the elements for an idealized systems, which offered the reference indicators of their energy sustainability. Considered the behavior of each element of the system for the whole period of the life cycle in real conditions, obtained graphic dependences. The revealed contradictions in the interaction elements of the system EMT showed that current tasks, manmade and implemented technical means lead to the loss of stable equilibrium inside the "environment", which in turn affects the balance of life-support of the person item, evidence in the form established that in both cases, a loss of equilibrium state calls a "technique". Developed histogram situational assessment model perturbation in the system EMT can not only set the emerging element of contradiction, but also to develop a model of governance that ensures the balance of the elements of the system with a high level of security.

Study of powder coatings formation modes in Transport Machine-Building Industry

“…internal heat source, the intensity of which is determined taking into account (1) , is transformed into heat, which is extracted through the coating material layer and the substrate.…”

Improving the technology of repair painting with powder-coated paints in agro-industrial complex

“…Given the fact that both of these values are expressed in terms of the corresponding molecular interaction energies, it should be recognized that the measurements of the coefficients σ1 and σ2, as well as contact angle of wetting θ, do indeed make it possible to judge the energy state of the interface between substances 1 and 2 and the interaction of the surface molecules of these substances. In particular, using these data, using formulas (1) and (2) and expressing the average distance between the molecules of substances in terms of their density, it is possible to determine the average energy U12 of the interaction of the surface molecule of substance 2 with the near-surface layer of the molecules of substance 1 [16]:…”

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The article presents the results of studies to determine the dependence of the degree of adhesion and the separation force of the powder coatings layer on the roughness parameter of the substrate, as well as the contact angle of wetting for various methods of preparing the painted surface by chemical methods. In addition, practical tests for stain resistance were carried out, which showed the absence of corrosion damage, as well as a slight change in color, gloss of coatings, chalking and dirt retention on the studied coating samples.Knowledge of the surface tension coefficient and the work of adhesion allows us to obtain information about the energy state of individual near-surface molecules, which is especially important to consider when developing new methods for diagnosing interphase boundaries, as well as methods for studying the interaction of molecules at these boundaries [1,9].One of these methods can be based on measurements of the contact angle of wetting, which can be carried out either directly or using capillary phenomena [13].Based on the equilibrium condition of interface (G) of three phases, one of which is gas (Figure 1) [15], it is easy to show that the surface tension coefficient σ12 is related to the contact angle θ by the following expression [14]:

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“…Knowledge of the surface tension coefficient and the work of adhesion allows us to obtain information about the energy state of individual near-surface molecules, which is especially important to consider when developing new methods for diagnosing interphase boundaries, as well as methods for studying the interaction of molecules at these boundaries [1,9].…”

Technique of performing construction works by machines with hybrid: manual and remote control

“…Mathematic model was created after the review of the existing methods offered by best scientists in the sphere [2,6,10,18]. The model suggests a hypothesis that technology operations performed at the construction sites create interconnections of element influence in the system triad "Construction sitemachine-operator" (CsMO).…”