Mechanism of vibration isolation using a magnet-spring and its application

Abstract

The mechanism of single-degree-of-freedom and six-degree-of-freedom vibration isolation is proposed. For the single-degrere-of-freedom vibration isolator, positive and negative magnet-springs were created by regulating the magnetic fields; a low-damping, passive vibration controller with a blind sector was then created by combining them with metal springs. Overall vibration is absorbed by the blind sector and magnet-spring, which automatically adjust the phases; the magnet-spring's resonance energy and shock vibration are absorbed by an oil damper. These passive vibration controllers were verified by experiments to have even greater vibration-absorbing properties than air-suspension or liquid-mount devices. Furthermore the six-degrere-of-freedom vibration isolator was constructed using magnet-spring and magnetic support device, and indicated the good characteristics of the transmissibility.