To the issue of the control law influence on the active dynamic vibration damper efficiency

Abstract

The work is devoted to the investigation of the influence of control laws on the tuning conditions of the active vibration damper. Active dynamic vibration damper is an additional mass with elasticity and power drive (electrodynamic, electromagnetic) and mounted on the main oscillating mass. Control of the power drive (actuator) is carried out according to information on the movement of the main mass and mass of the absorber. To define the fundamental capabilities of the vibration isolation system with an active dynamic vibration damper, the work of the actuator was assumed to be ideal. The basis of the dynamic model is the differential equations written relative to the equilibrium position of the two-mass system and taking into account the adopted control law of the actuator. It is shown that the use of an active vibration damper makes it possible to significantly expand the frequency range of the minimum value of the force transfer coefficient to the base in comparison with passive dynamic vibration dampers. Based on the results of the study, recommendations were received for the design of vibration isolation systems with an active dynamic vibration damper.