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handle: 10261/7857
[ES] En este trabajo ilustraremos el diseño de un sensor distribuido para el desplazamiento volúmico de una placa delgada en soporte simple. El diseño parte de las formas modales de la placa, y proporciona la forma geométrica de dos tiras delgadas de PVDF, en cruz, cuya salida sumada es el desplazamiento volúmico en una banda de frecuencias hasta 500 Hz. El desplazamiento volúmico proporcionado por este sensor será usado como señal de error para un sistema de Control Activo Acústico Estructural (CAAE). La gran ventaja de los sensores distribuidos, frente a los sensores puntuales (por ejemplo, acelerómetros) es que permiten integrar el filtrado modal en su forma geométrica.
[EN] The aim of this paper is to design a distributed sensor for the volume displacement of a simply supported thin plate. Starting from the modal shapes of the plate, the procedure provides the shape function of two perpendicular strips of PVDF film. The sum of the output charges of the two PVDF strips affords the volume displacement of the plate in low frequency (below 500 Hz). This distributed sensor will be used as error sensor in an Active Structural Acoustic Control (ASAC) system. Distributed sensors allow to include modal filtering within their shape functions.
7 pp.-- PACS nr.: 43.40.Vn.-- Comunicación presentada en: XXXII Congreso Nacional de Acústica – TecniAcústica 2001 y Encuentro Ibérico de Acústica (Logroño, 17-19 Octubre 2001).
Este trabajo ha sido posible gracias al apoyo financiero de la Comisión Interministerial de Ciencia y Tecnología (CICYT), proyecto AMB99-1095-C02-01.
Publicado en número especial de la Revista de Acústica: Vol 32(2001).
Peer reviewed
Simply supported thin plate, Distributed sensor, Active Structural Acoustic Noise Control (ASAC) system, Desplazamiento volúmico, Volume displacement, Plate modal shapes, Sensor distribuido, Sistema de Control Activo Acústico Estructural (CAAE), Formas modales de la placa, Placa delgada en soporte simple
Simply supported thin plate, Distributed sensor, Active Structural Acoustic Noise Control (ASAC) system, Desplazamiento volúmico, Volume displacement, Plate modal shapes, Sensor distribuido, Sistema de Control Activo Acústico Estructural (CAAE), Formas modales de la placa, Placa delgada en soporte simple
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