Suppressing aeroelastic vibrations via stability region maximization and numerical continuation techniques
An active flutter suppression using linear sub-optimal control scheme is investigated for a 2dof airfoil system with nonlinear torsional stiffness and limited deflection amplitude of its single actuator. The suppression of limit cycle oscillations in the nonlinear closed-loop system is achieved through maximization of the stability region of its linearized system. The critical value of the control input amplitude is determined via numerical continuation of closed-loop limit cycle. At this value, the cycle experiences saddle-node bifurcation and disappears, satisfying the necessary condition for the global stability in the closed-loop system.
Citation : Demenkov, M. N. and Goman, M. (2009) Suppressing aeroelastic vibrations via stability region maximization and numerical continuation techniques. Proceedings of the UKACC International Conference on Control 2008, University of Manchester, Sept. 2-4
ISBN : 9780955615214
Research Group : Centre for Engineering Science and Advanced Systems
Peer Reviewed : Yes