Development of a resonant actuation system for active flap motors

Jun Sik Kim, K. W. Wang, Edward C. Smith

Research output: Contribution to journalConference article

Abstract

A resonant actuation system for active flap rotors is developed and evaluated experimentally. The concept involves deflecting each individual trailing-edge flap using a compact resonant piezoelectric actuation system. Each resonant actuation system yields high authority, while operating at a single frequency. By tailoring the natural frequencies of the actuation system (including the piezoelectric actuator and the related mechanical and electrical elements) to the required operating frequencies, one can increase the output authority. Robustness of the device can be enhanced by increasing the high authority bandwidth through electric circuitry design. Such a resonant actuation system (RAS) is analyzed for a full-scale piezoelectric induced-shear tube actuator and bench top testing is conducted to validate the concept. An adaptive feed-forward controller is developed to realize the electric network dynamics and to adapt the phase variation. The control strategy is then implemented via a DSP (Digital Signal Processor) system. Analysis is also performed to examine the system dynamics in forward flight with piezoelectric resonant actuators, using a perturbation method to evaluate the system's time-varying characteristics. Numerical simulations reveal that the resonant actuator concept can be applied to forward flights as well as to hover conditions.

Original languageEnglish (US)
Pages (from-to)1627-1637
Number of pages11
JournalAnnual Forum Proceedings - AHS International
Volume2
StatePublished - Dec 1 2005
Event61st Annual Forum Proceedings - AHS International - Grapevine, TX, United States
Duration: Jun 1 2005Jun 3 2005

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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