Abstract

Maglev actuator is widely used in active vibration control. This type of actuator often works in parallel with passive vibration isolator, and they compose a passive-active vibration isolation system. Any vibration isolation system must be stable, so it is necessary to conduct stability design before use. In this paper, the theoretical model is established. Based on the model, the negative stiffness of the actuator is deduced, and the stiffness model of the hybrid system is determined. According to the stiffness criterion, the stable working air gap of a certain maglev actuator is designed.

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