“…However, the open loop of the AMB system is inherently unstable, a closed-loop feedback is needed to stabilize the mechatronic system. Nonami et al [5] ever tried to employ H N theory for the controller design for AMB-based milling machines and implementation via DSPchip and electronic technology. Sivrioglu et al [6] improved the efficiency of energy storage flywheel supported by AMBs, by applying H N controller and multiple-equilibriums linearization.…”