Design Method of Dynamic Vibration Absorber Considered Phase Gain

Abstract

Dynamic vibration absorbers are widely used mechanisms for vibration suppression, and their design methods are diverse. For forced vibration, there are the fixed point theory which is often used and the minimum variance criterion which is based on H2 theory for random vibration. For transient vibration, there is a stability criterion and others. However, these are design methods when the mass ratio is fixed, and as far as the authors know, there is no dynamic vibration absorber design method to deal with the change of mass ratio. In this paper, we summarize the design method of the dynamic vibration absorber considering the phase margin and its calculation result, and show that we can cope with the change of mass ratio.