Аспекти вибору оптимальних параметрів електромеханічної системи при проектуванні електроприводів технологічних машин з реалізацією граничного ступеня демпфірування пружних механічних коливань

Abstract

The decision of actual task of choosing the optimal parameters of electromechanical systems of electric drives of technological machines to improve their dynamic qualities, in particular, the minimum oscillation of transient processes, to ensure the specified accuracy of the movement of working mechanisms at the design stage. It is shown that the parameters characterizing a particular type of electric drive with maximum damping and minimum dynamic loads are determined by the laws of electromechanical interconnection, which makes it possible to use the specific property of damping of elastic mechanical vibrations by the electric drive itself. Based on the laws of the electromechanical interrelation of processes in the electrical and mechanical subsystems of the drive, it is proposed to use generalized indicators of electromechanical interaction processes at the initial stage of designing an electromechanical system, which are simple and meet the requirements of system analysis. As a result of the research, it has been shown that when optimizing electromechanical systems according to the criterion of the minimum oscillation of the main coordinates, the parameters cannot be chosen "at random", arbitrarily assigned or set in accordance with the existing methods of synthesis of automatic control systems, since the main parameters characterizing one or another version of an electric drive with a minimum oscillation and minimum dynamic loads are interconnected due to the coefficient of distribution of inertial masses γ. Dependencies are proposed that allow for a real combination of parameters of an electromechanical system when realizing the limiting degree of damping of elastic mechanical vibrations to achieve the maximum damping action of an electric drive, limit dynamic loads and optimize transient processes.