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克里斯托弗·富勒博士和阿德莱德大学的多林·汉森博士为期两年的合作研究。合作的工作是探索使用施加到机身上的振动输入来控制飞机的内部噪音。特别是，这项研究比较了使用Transputer/通信系统和使用数字信号处理系统进行噪声控制的情况。要考察的领域包括研究更快的噪声输入输出控制、先进的噪声传感器，以及了解机身比例对噪声控制的影响。该项目代表了美国和澳大利亚研究人员之间的出色合作。这家澳大利亚集团正在使用Transputer/通信系统来解决控制问题，该系统配置了许多高速输入输出通道。弗吉尼亚理工学院的该系统是在数字信号处理芯片上实现的，输入和输出通道有限。这项研究有可能在不牺牲控制速度的情况下促进控制通道的增加，并导致更快地在飞机上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，如水下声学和工业噪声控制。这一行动为富勒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的批准和继续为阿德莱德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.