Vibration Suppression by Inelastic Collision and Its Application to Vibration Reduction in Stacker Cranes

This paper is concerned with a new vibration suppression technique utilizing velocity change caused by inelastic collision of masses. It is verified that the proposed method is basically effective to suppress harmonic vibrations. As an application of this vibration suppression principle, a vibration reduction problem of so-called stacker crane system is considered and a novel lift-up strategy of the platform is proposed for reduction of the residual vibration. The effectiveness of the proposed method is demonstrated by experiments using the small-scaled experimental model of the stacker crane.