Hybrid Vibration Isolation in Electromagnetic Vibration Feeders

Passive vibration isolation and hybrid vibration isolation of electromagnetic vibration feeders were studied. Adopting passive vibration isolation, transmissibility of vibration from electromagnetic vibration feeders and the effect on other equipments can be effectively reduced, but its working efficiency is reduced too. By choosing appropriate feedback variables and feedback gains, the vibration transmissibility and efficiency of electromagnetic vibration feeders can be markedly improved by a hybrid vibration isolation system. When the acceleration of the upper mass is used as the feedback variable and the acceleration feedback gain is equal to the magnitude of the upper mass, the electromagnetic vibration feeder has then the best work efficiency and the vibration transmissibility approaches zero.