This paper deals with an application of H∞ control attenuating initial-state uncertainties to the magnetic bearing and examines the H∞ control problem, which treats a mixed Disturbance and an Initial state uncertainty Attenuation (DIA) control. The mixed H∞ DIA problem supplies H∞ controls with good transients and assures H∞ controls of robustness against initial-state uncertainty. On the other...

Conventional active magnetic bearing (AMB) systems use several separate radial and thrust bearings to provide a five-degree of freedom (DOF) levitation control. This article presents novel combination 5-DOF AMB (C5AMB) designed for shaft-less, hub-less, high-strength steel energy storage flywheel (SHFES), which achieves doubled density compared prior technologies. As single device, the C5AMB pr...