Measurements of Local Volume Displacement Using a Piezoelectric Array
This paper presents a general method for sensing the local volume displacement by means of an PVDF array for vibrating beams. An array of rectangular PVDF patches attached on the surface of the beam is used as the sensor. The output signals of the PVDF patches are multiplied by appropriate weights so that the weighted combinations of the outputs directly lead to the local volume displacements of the beam. Numerical simulation results show that the weight of every PVDF patch sensor can be tuned independent of the external excitation. Experimental results are also presented to show the feasibility of this new of type local volume displacement sensor.
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Document Type: Research Article
Publication date: 2006-07-01
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- Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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