[ASME ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference - Washington, DC, USA (August 28–31, 2011)] Volume 4: 8th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, Parts A and B - State Dependent Riccati Equation (SDRE) Control Method Applied in Cancellation of a Parametric Resonance in a Magnetically Levitated Body