Characteristics of Dynamic Vibration Absorber Based on Magnetorheological Fluids

A intelligent dynamic vibration absorber(DVA) based on magnetorheological fluid(MRF) is presented.MRF has controllable shear modulus when it is exposed to an external magnetic field.It is used as a controllable elastic and damping element here.When the applied current is changed,the magnetic field through MRF will change,then the resonance frequency of the DVA will shift and increase the band of vibration absorption.The structure parameters of DVA are studied,and easy to control the system to select the parameters,intelligent adjust the DVA.