Model Based Robust Stabilizing Adaptive Variable Structure Control (RSAVSC) for MAGLEV and Active Magnetic Bearings

A method of designing adaptive controller for high performance active magnetic bearings (AMB) is represented. The approach combines two simple architectures often referred to as a Dynamic Feedback Linearization (DFL) and recent advances in adaptive control design techniques to form a new approach for AMB. The procedure enables the designer to explicitly define the desired closed loop dynamics. The result is a straight forward procedure that enables the design of a robust stabilizing adaptive controller that forces the system dynamics to the specified desired dynamics, despite gravitational and centrifugal disturbances, modeling uncertainties, and variations in mass, moments of inertia, radii of eccentricities and center of mass of the rotor. This method also guarantees both stability and performance robustness and enables the design for other unstable, magnetic levitation plants.