U.S.-Australian Cooperative Research: Experiments on ActiveControl of Aircraft Interior Noise

该奖项将支持弗吉尼亚理工学院的Christopher Fuller博士和阿德莱德大学的Dolin Hansen博士进行为期两年的合作研究。合作工作是探索利用机身振动输入控制飞机内部噪声。特别地，该研究比较了使用转发器/通信系统和使用数字信号处理系统的噪声控制。需要研究的领域包括更快的噪声输入输出控制，先进的噪声传感器，以及对噪声控制的机身缩放效应的理解。该项目代表了美国和澳大利亚研究人员之间的卓越合作。澳大利亚的研究小组正在通过使用转发器/通信系统来解决控制问题，这些系统被配置为高速的多个输入输出通道。弗吉尼亚理工学院的系统是在一个数字信号处理芯片上实现的，在输入和输出通道方面受到限制。该研究有可能在不牺牲控制速度的情况下增加控制通道，并导致在飞机上更快速地实施有效的噪声控制系统。研究结果还有望应用于其他领域，如水声和工业噪声控制。这项行动为Fullerr博士在项目第一年的旅行提供了资金。第二年的资金取决于澳大利亚政府是否批准并继续为阿德莱德部分的合作项目提供资金。

This award will support collaborative research between Dr. Christopher Fuller of Virginia Polytechnic Institute and Dr. Dolin Hansen of Adelaide University for a two year period. The cooperative work is to explore control of interior noise in aircraft using vibration inputs applied to the fuselage. In particular, the study compares using transputer/communi- cations systems and those using digital signal processing systems for noise control. Areas to be examined include research on faster input-output control of noise, advanced noise sensors, and understanding of fuselage scaling effects on noise control. The project represents excellent collaboration between the U.S. and Australian researchers. The Australian group is approaching the control problem with the use of transputer/ communications systems, which are configured to many input output channels at high speed. The system at Virginia Polytechnic Institute is implemented on a digital signal processing chip, limited in terms of input and output channels. The research has the potential to advance an increase in control channels without sacrifice of control speed, and lead to more rapid implementation of effective noise control systems in aircraft. Application of the results to other areas such as underwater acoustics and industrial noise control are also expected. This action provides funds for Dr. Fullerr's travel in the first year of the project. Funding for the second year is contingent upon the Australian Government's approval and continued provision of funds for Adelaide's part of the cooperative project.