Fault Tolerant Control of High-Speed PEM  Hybrid Levitation System

Fault tolerance technology is an effective method to improve system reliability without changing the system structure and increasing cost. A unified fault diagnosis and tolerant control scheme for the levitation system of high-speed maglev train is proposed based on the controller parameterization theory. For incipient faults, a fault tolerant control strategy based on the online update of control parameters is proposed. Aiming at serious system failures, fault tolerant control methods based on signal reconstruction and switching strategy are proposed.