About: Sound shielding by a piezoelectric membrane and a negative capacitor with feedback control

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The design and realization of an adaptive sound-shielding system based on a method to control the effective elastic stiffness of piezoelectric materials are presented in this paper. In this system, the sound-shielding effect is achieved by a sound reflection from the piezoelectric curved membrane fixed in rigid frame and connected to an active analog circuit that behaves as a negative capacitor. The acoustic transmission loss through the curved membrane was measured for the incident sound of frequency 1.6 kHz and of acoustic pressure level 80 dB. When the negative capacitor in the system was properly adjusted, the acoustic pressure level of the transmitted sound was reduced from the initial 60 dB to 15 dB by the action of the negative capacitor. The design and realization of an adaptive sound-shielding system based on a method to control the effective elastic stiffness of piezoelectric materials are presented in this paper. In this system, the sound-shielding effect is achieved by a sound reflection from the piezoelectric curved membrane fixed in rigid frame and connected to an active analog circuit that behaves as a negative capacitor. The acoustic transmission loss through the curved membrane was measured for the incident sound of frequency 1.6 kHz and of acoustic pressure level 80 dB. When the negative capacitor in the system was properly adjusted, the acoustic pressure level of the transmitted sound was reduced from the initial 60 dB to 15 dB by the action of the negative capacitor. (en) V tomto článku je prezentována realizace a návrh adaptivního systému pro tlumení hluku a vibrací založených na metodě řízení efektivní elastické tuhosti piezoelektrických materiálů. V tomto systému je tlumícího jevu dosaženo pomocí odrazu zvuku od zakřivené piezoelektrické membrány upevněné v pevném rámu a připojené k aktivnímu analogovému obvodu se zápornou kapacitou. (cs)
Title	Sound shielding by a piezoelectric membrane and a negative capacitor with feedback control Tlumení hluku pomocí piezoelektrické membrány a kondenzátoru se zápornou kapacitou se zpětnovazebním řízením (cs) Sound shielding by a piezoelectric membrane and a negative capacitor with feedback control (en)
skos:prefLabel	Sound shielding by a piezoelectric membrane and a negative capacitor with feedback control Tlumení hluku pomocí piezoelektrické membrány a kondenzátoru se zápornou kapacitou se zpětnovazebním řízením (cs) Sound shielding by a piezoelectric membrane and a negative capacitor with feedback control (en)
skos:notation	RIV/46747885:24220/08:#0000916!RIV09-GA0-24220___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GA101/08/1279), P(GA202/07/1289)
http://linked.open...iv/cisloPeriodika	8
http://linked.open...vai/riv/dodaniDat	2009
http://linked.open...aciTvurceVysledku	Sluka, Tomáš Mokrý, Pavel
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Technická univerzita v Liberci / Fakulta mechatroniky, informatiky a mezioborových studií
http://linked.open...dnocenehoVysledku	396185
http://linked.open...ai/riv/idVysledku	RIV/46747885:24220/08:#0000916
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	ELASTICITY CONTROL; POLYMER-FILMS; NEGATIVE CAPACITOR CIRCUITS; NOISE SHIELDING (en)
http://linked.open.../riv/klicoveSlovo	POLYMER-FILMS NEGATIVE CAPACITOR CIRCUITS NOISE SHIELDING ELASTICITY CONTROL
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[AED74FBA2AEF]
http://linked.open...i/riv/nazevZdroje	IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
http://linked.open...in/vavai/riv/obor	BI
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Electromechanical properties of aadvanced ferroelectrics materials Modern methods for noise and vibration suppression using piezoelectric materials
http://linked.open...UplatneniVysledku	2008
http://linked.open...v/svazekPeriodika	55
http://linked.open...iv/tvurceVysledku	Mokrý, Pavel Sluka, Tomáš Fukada, Eiichi Kodama, Hidekazu
http://linked.open...ain/vavai/riv/wos	000258143800018
issn	0885-3010
number of pages	8 (xsd:int)
http://localhost/t...ganizacniJednotka	24220

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