Tail buffet alleviation of high performance twin tail aircraft using piezo-stack actuators

摘要

We show that the tail buffet induced vibrations in high-performance twin-tail can be alleviated using smart structure concepts. ^Theoretical and experimental investigations were conducted to estimate the required control authority for tail buffet alleviation using piezoceramic stack-based actuators. ^This was accomplished by designing an effective actuator assembly, developing procedures to optimally place the sensors and actuators on the vertical tail subassembly, designing controllers using acceleration feedback control concepts and developing procedures to implement these controllers using digital signal processor-based systems. ^The effectiveness of multimode controllers was validated by testing a full-scale laboratory sub-assembly under excitation provided by a shaker, and wind tunnel tests on a 1/16th scale model with aeroelastically tailored vertical tail subassembly. ^(Author)