Development and Verification of Various Strategies for the Active Vibration Control of Smart Aerospace Structures Subjected to Aerodynamic Loading

The previous two projects jointly conducted by the same team, AVT/T-121 Application of Smart Materials in the Vibration Control of Aeronautical Structures (April 2000March 2002) and AVT/T-129 Development of Control Strategies for the Vibration Control of Smart Aeronautical Structures (April 2002March 2004), form the basis of this project. During these, first the smart beam-like structures were studied in T-121. The smart beam structural models were obtained and Hinfinity active vibration control strategy was applied. This work was extended to smart plate-like structures (smart fins) which were studied within the framework of T-129. In that project, the fin was subjected to mechanical shaker vibration. No aerodynamic loads were considered. This new project is intended to complement the previously obtained results by also considering the effects of true aerodynamic loading. Although mechanical shaker input enables a simple implementation of loads, aerodynamic loads provide a much more challenging dynamic input that will vary not only in amplitude but also in frequency. The following goals were achieved in T-133: