Patent ID: 8406438

Claim:
A device for at least one of exciting, damping and detecting structural vibrations of a plate-shaped device ( 10 ; 10 a ) using a piezoelectric strip device, ( 2 g , 2 h ), comprising: a carrier device ( 1 ), from which the plate-shaped device ( 10 ; 10 a ) is separated via an intermediate space ( 11 ); in which the piezoelectric strip device ( 2 g , 2 h ) includes a plurality of piezoelectric strip elements ( 2 g , 2 h ), each of which is connected to the carrier device ( 1 ) and the plate-shaped device ( 10 ; 10 a ); in which the strip elements ( 2 g , 2 h ) are piezoelectrically excitable to undergo changes in length, thereby inducing the any of the exciting, the damping and the detecting of the structural vibrations of the plate-shaped device ( 10 ; 10 a ); in which the piezoelectric strip elements ( 2 g , 2 h ) are configured and connected to the plate-shaped device ( 10 ; 10 a ) in such a manner that the vibrations are transmitted in a substantially punctiform manner; wherein the piezoelectric strip elements include a group of one or more piezoelectric strip elements ( 2 g , 2 h ) that includes a plurality of series-connected strip elements ( 2 g , 2 h ), in which a first end (E 1 ) of a first strip element ( 2 g ) and a first end (E 1 ) of a second strip element ( 2 h ) are connected to the carrier device ( 1 ), and in which a second end (E 2 ) of the first strip element ( 2 g ) and a second end (E 2 ) of the second strip element ( 2 h ) are connected to one another and to the plate-shaped device ( 10 ; 10 a ), thereby spanning a cavity ( 6 ) in a manner of a bridge; and wherein the first strip element ( 2 g ) arches one part of the cavity ( 6 ) and the second strip element ( 2 h ) arches the other part of the cavity ( 6 ).