Analyzing of heating elements' location of distributed control objects
At the present stage of development of automatic control systems the issue of maintaining of a given temperature regime appears. The authors have developed a method of synthesis of nonlinear regulators to stabilize a control object temperature field (published by Ilyushin, Y., Pervukhin, D., Afanasieva, O., Klavdiev, A., & Kolesnichenko, S. (2014). The Methods of the Synthesis of the Nonlinear Regulators for the Distributed One-Dimension Control Objects. Modern Applied Science, 9(2), 42–61. http://dx.doi.org/10.5539/mas.v9n2p42). The resulting controller allows creating an adaptive regulated system to maintain a temperature field - to do that, it is necessary to analyze a control system in order to find an optimal number of heating elements to stabilize a temperature field. In this there have been article obtained functions for calculating an optimal number of heating elements of silicon-carbide heaters, used for a temperature treatment of various kinds of products (bread baking, metal hardening, etc.). The article describes a method to calculate the number of heating elements of n-dimensional control objects. A check of an adequacy of a mathematical model, obtained within a synthesis process is provided as well. Obtained hodographs of the system demonstrate a stability of running processes and therefore an adequacy of results.
Development of the Automated Temperature Field Control System with a Pulsed Heating Source
The paper observes solutions of the drilling problem in extremely low temperature conditions. It presents problems of drilling in permafrost. Authors propose the developped ice drill control system, show its hardware implementation, construct plots of temperature field formation.
Structuring of Inorganic Materials in Weak RF Electromagnetic Fields
Data are presented on the effect of weak rf electromagnetic fields on the setting of mineral binders and crystallization of metals, alloys, solutions, and molten salts. The results are interpreted in terms of electromagnetoacoustic conversion. The assumption is made that resonance energy dissipation gives rise to coupled motions of fluctuating supramolecular structures in the mesophase, thereby increasing the transport rate and leveling off the thermodynamic parameters of the system.