G - Physics – 01 – P
Patent
G - Physics
01
P
G01P 15/097 (2006.01)
Patent
CA 2565289
The invention concerns a sensor comprising two identical vibrating elements operating at a common working frequency and interconnected by a mechanical decoupling device. The device consists of a frame (DM') and two connecting bridges (71, 72) each supporting one element. The sensor is characterized in that the frame (DM') consists of a series of solid parts (63, 64, 65, 66) and thinned parts (11, 12, 13, 14, 15, 16) such that the frequency of a structural resonant mode of the frame is equal to the common working frequency and that each connecting bridge (71, 72) is arranged in a vibrating node of the structure at said frequency. Thus, the vibrations of the two vibrating elements are decoupled from each other.
Le capteur comporte deux éléments vibrants identiques fonctionnant avec une fréquence de travail commune et reliés entre eux par un dispositif de découplage mécanique. Le dispositif est constitué d~un cadre (DM.prime.) et de deux ponts de liaison (71, 72) supportant chacun un élément. Le capteur se caractérise en ce que le cadre (DM.prime.) est constitué d~une succession de parties massives (63, 64, 65, 66) et de parties amincies (11, 12, 13, 14, 15, 16) de telle sorte que la fréquence d~un mode de résonance structurelle du cadre est égale à la fréquence de travail commune et que chaque pont de liaison (71, 72) est disposé dans un nAEud de vibration de la structure à cette fréquence. Ainsi, les vibrations des deux éléments vibrants sont découplées l~une de l~autre.
Janiaud Denis
Le Traon Olivier
Lecorre Bernard
Muller Serge
Pernice Marc
Fetherstonhaugh & Co.
Onera (office National D'etudes Et de Recherches Aerospatiales)
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