VIBRATION MANAGEMENT OF DYNAMIC MUFFLERS IN MECHANICAL SYSTEMS WITH A FINITE NUMBER OF DEGREES OF FREEDOM

Abstract

In this research, a method for the dynamic synthesis of vibration dampers for a viscoelastic mechanical system with a finite number of degrees of freedom is presented. The considered system consists of several bodies (in particular, two) that are elastically connected to the protected object. The study is focused on the development of an effective vibration protection system for electronic devices operating under external dynamic disturbances, especially in the vicinity of resonant frequencies. In the process of designing such a system, the principles of automatic control theory together with mathematical modeling methods are applied.

The proposed approach is based on the feedback concept, which allows improving the efficiency of vibration suppression. An algorithm for generating feedback signals within an information-measuring system for active vibration protection of electronic devices is developed. The main feature of this algorithm is the consideration of the phase difference between external excitation and the additional compensating vibration effects. On the basis of the proposed mathematical model, feedback signals can be generated for each control channel, which makes it possible to reduce the overall vibration impact acting on the electronic equipment.