ADA585066_用于无人机系统的小型化纳米复合压电麦克风

UNCLASSIFIED Approved for public release;distribution is unlimited (U)Miniaturized Nanocomposite Piezoelectric Microphones for UAS Applications October 22,2012 Stephen Horowitz,Jon Fox,Dustin Mathias,Jean Cortes,Michael Allen,Laura Barkett Ducommun Miltec,Emerging Technologies Group,Huntsville AL 35773 and Mohan Sanghadasa US Army AMRDEC,Redstone Arsenal,AL 35898 ABSTRACT Recent advances in microfabrication and nanoscale material synthesis have enabled a new generation of sub-mm piezoelectric microphones with the sensitivity of larger acoustic sensors.The piezoelectric approach enables new applications and platforms such as collision avoidance on UAS due to environmental damage resistance,small size,ability to flush mount and zero power supply requirements.In this paper we will present our latest development efforts to incorporate nanostructured piezoelectric material into a working microfabricated microphone.Further,we will discuss the unique challenges that must be overcome to package these sensors in arrays for a UAS platform.This paper presents the latest results from our development efforts.Utilizing lumped element and finite element modeling and composite material analysis,we