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9 July 2002 Active interior noise control: an industrial perspective
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Active noise control has been a mature field of research activity for a number of years now. However, not so many commercial applications are available. In the aerospace industry for example, there seems still to be a gap between the promising results of academic research and practical systems in service. Two main problems need to be solved : the first one is relative to system integration. Too often lab type electronic components are used, which make the systems impossible to integrate for an onboard application (bulky power amplifiers, large real time computing platforms). The second one is more fundamental in nature : it relates to the current limitation of control algorithms to fighting against only 'simple', coherent perturbations. Bluntly put, most commercial systems can deal with one or two sinusoidal perturbations. However, broadband noise reduction is really a need and should be the goal of research today. EADS CRC is working on this problem with a global system perspective. Research topics include the whole array covering compact power amplifiers, integrated actuators in aerospace structures, miniaturized controllers. In the full length paper, results will be shown regarding a compact integrated system (including control and power electronics) and a demonstrator of an active trim panel for interior noise control.
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Benoit Petitjean and Cyrille Greffe "Active interior noise control: an industrial perspective", Proc. SPIE 4698, Smart Structures and Materials 2002: Industrial and Commercial Applications of Smart Structures Technologies, (9 July 2002);

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