Research of electromechanical system of vibrocompactor with a chaotic established operating mode

Abstract

The article is devoted to the researching the possibility of creating chaotic regimes for the motion of the electromechanical vibrocompactor of the crucible induction furnace lining in order to improve the quality of the lining, which largely determines the technical and economic parameters of the iron production process. Originality. A method is proposed for the formation of a chaotic operating mode of the electric drive of a vibrocompactor by applying a sinusoidal function from the delay in the feedback circuit in the speed of the electric drive. The dependence of the chaotic operation parameters on the parameters of the closed control system during the operation of the electric drive as in a system with a power supply of infinite power is determined, taking into account the limitation of boosting the supply voltage. Methodology. In the study of the tasks, general methods of the theory of electric drive, electrical engineering and mathematical modeling were used. The compilation of the equations of a mathematical model of a vibrocompactor with an electric DC drive is based on the application of approved laws of mechanics and electrical engineering. The solution of the equations obtained and the visualization of the results obtained are performed in the MATLAB/Simulink environment. Results. A mathematical model of the mechanical system of a vibrocompactor is developed, taking into account the lining damping ability. As the vibrocompactor electric drive, a DC motor of independent excitation is adopted. As a result of the analysis of known methods of excitation of the regime of chaotic oscillations in electromechanical systems for lining vibrocompactor, a sinusoidal function was used from the delayed feedback on the speed of the electric drive. The results of mathematical modeling of the operating modes of the electromechanical system of a vibrocompactor with a closed loop system are given, the conditions for the appearance of a chaotic operating mode are determined, the dependence of the chaotic operating mode parameters on the feedback control parameters of a closed control system is considered. Practical value. The use of the proposed approach will simplify the design of the mechanical part of the vibrocompactor electric drive, increase the density of the lining of the crucible induction furnaces, and improve the technical and economic parameters of the cast iron production process.