Theoretical Research of the Active-type Dynamic Vibration Absorbers

The working principle of active dynamic vibration absorber is theoretically analyzed from the perspective of energy,and the expressions of the system vibration response and active control coefficient are deduced,furthermore The curves of active control coefficient,active control force and structure amplitude against incentive frequency are plotted respectively by examples.By comparison,control frequency band of active dynamic vibration absorber is wider than dynamic vibration absorber and the energy from transfer of active control rarie significantly with the effect of vibration control of structure.