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.
Designing of Distributed Control System with Pulse Control
Currently, conveyor-type tunnel furnaces with electric heater consume large amount of energy that in turn affects the cost of the product, subjected to thermal treatment. Reduction in energy costs when maintaining the temperature will reduce the cost of the final product. This study deals with design of the temperature field control system in furnace by replacing conventional heating elements for spot heating elements, operating by pulse heating method. The mathematical models and a study of the temperature field are considered for three-dimensional object.
Combined optimisation of metal hot forming line with induction pre-heating
This paper discusses a system approach for combined optimization of metal hot forming manufacturing line with induction pre-heating. This system approach takes into consideration the whole sequence of the interrelated technological operations including billet heating by induction, its cooling during transportation and subsequent plastic deformation during hot working. All theses subsequent processes will be considered as a technological complex and combined optimization criteria will be used for its optimization. Depending upon application, metal hot working operations may be represented by forging, rolling, stamping, upsetting, extrusion and other operations where metal undergoes plastic deformation.