BANDPASS VIBRATION ABSORBER

Abstract A new concept for active vibration absorption is presented. A properly designed compensator in the local feedback converts the well-known passive absorber into a bandpass absorber. Such an absorber amplifies frequencies in a given frequency range, thus almost producing resonance for all these frequencies. If such an absorber is attached to a vibrating body, it absorbs vibrations at all frequencies that belong to the bandpass range. The presented compensator design guarantees the stability of the system. The proposed concept needs an additional local control of the absorber mass displacement, which has also been resolved. The paper presents the idea, the design procedure, and the simulation results that prove the relevance of the solution.