Eddy current vibration absorber design and experiments

Aiming at the need of vertical tail buffet suppression, a design scheme of dynamic vibration absorber with compact layout and adjustable damping is proposed; this is based on the mechanism of eddy current energy dissipation. Eddy current energy dissipation can ensure that the dynamic vibration absorber has good environmental adaptability, durability and reliability. Based on the electromagnetic theory, the calculation model of eddy current damping force is established and the design rule of eddy damping force is concluded. Through the comparison between the calculations and the experiments, the validation and accuracy of eddy current damping force model are verified. Taking an equivalent cantilever beam system as the object of vibration control, and on the basis of the theory of dynamic vibration absorber optimal design, we determined the optimal parameters of dynamic vibration absorber and completed the design and manufacture of eddy current dynamic vibration absorber prototype. Experimental results show that the maximum amplitude of cantilever beam can be decreased at most by 98%, and the proposed eddy current dynamic vibration absorber has obvious vibration-absorption effect.