Abstract
This study proposes an adaptive unbalance disturbance control for a zero-power magnetic bearing system based on a Fourier coefficients algorithm which generates the synchronous compensation signals. The proposed adaptive algorithm does not need any plant model of the AMB system for disturbance cancellation. The compensation signal generated by adaptive algorithm is added to sensor signal to attenuate the unbalance disturbance. The adaptive algorithm is experimentally verified and a high degree of unbalance response attenuation is achieved.