Papers Published

  1. Frampton, Kenneth D. and Clark, Robert L. and Dowell, Earl H., Active control of panel flutter with piezoelectric transducers, Journal of Aircraft, vol. 33 no. 4 (1996), pp. 768 - 774 .
    (last updated on 2007/04/10)

    Abstract:
    This article investigates the active control of panel flutter with piezoelectric transducers and including linearized potential flow aerodynamics. The aerodynamic modeling is accomplished by approximating the aerodynamic generalized forces with infinite impulse response filters. These filters are coupled to the in vacuo panel dynamic system in feedback, thus, creating a coupled, aeroelastic system. The panel model is developed from a Rayleigh-Ritz approach and includes the mass and stiffness effects of a piezoelectric transducer. Acting as a self-sensing actuator, the piezoelectric transducer is used to implement direct rate feedback control. Results of an analytical implementation of this control system demonstrate a significant increase in the flutter boundaries.

    Keywords:
    Control systems;Piezoelectric transducers;Aerodynamics;Potential flow;Mathematical models;Approximation theory;Aerodynamic loads;Digital filters;Feedback;Stiffness;Actuators;Feedback control;