STUDY OF THE VIBRATION DYNAMICS OF A MACHINE WITH AN ELECTRODYNAMIC VIBRATION EXCITER

Abstract

Abstract: This paper analyzes the dynamic characteristics of a technological machine equipped with an electrodynamic vibration exciter under nonlinear loading conditions. The amplitude–frequency relationships of the machine are investigated both in idle (no-load) mode and under load while operating from a current source, and the corresponding characteristics are obtained. The study revealed that multiple-valued (ambiguous) regions may occur in the amplitude–frequency characteristics, and some of their branches correspond to unstable operating modes. In addition, the conditions leading to the occurrence of such phenomena are substantiated.