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- W3128019747 abstract "Abstract This paper presents a class of modal sensors built with an array of point sensors. A modal sensor that is able to respond to only a particular vibrating mode of a structure has been designed and tested in this study. The theory of the design is based on orthogonality principle of the modal vectors with respect to the mass matrix. Seven the small piezoelectric sensors (PZT) are bonded on the surface of a cantilevered beam at arbitrary locations. The signals of the sensors are weighted and added together in such a way as to cancel the effect of all the vibrating modes but the mode of interest. The weighting coefficients play the main roll of minimising the response of unwanted modes and maximising the response of the mode of interest. The response of the modal sensors have been fed back separately into a PZT actuator to damp and control just that particular mode. Modal observability of modes 2 and 3 of a cantilevered beam have been investigated and tested experimentally. The experimental results indicate that a specific vibrating mode can be extracted and controlled without any spill over effects on the other modes." @default.
- W3128019747 created "2021-02-15" @default.
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- W3128019747 date "1999-09-12" @default.
- W3128019747 modified "2023-09-25" @default.
- W3128019747 title "Modal Observability of a Cantilevered Beam Using an Array of Point Sensors" @default.
- W3128019747 doi "https://doi.org/10.1115/detc99/vib-8322" @default.
- W3128019747 hasPublicationYear "1999" @default.
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