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자료유형
학술저널
저자정보
Uma, G. (Department of Instrumentation and Control Engineering, National Institute of Technology) Umapathy, M. (Department of Instrumentation and Control Engineering, National Institute of Technology) Kumar, K. Suneel (Department of Instrumentation and Control Engineering, National Institute of Technology) Suresh, K. (Department of Instrumentation and Control Engineering, National Institute of Technology) Josephine, A. Maria (Department of Instrumentation and Control Engineering, National Institute of Technology)
저널정보
테크노프레스 Smart structures and systems Smart structures and systems 제5권 제3호
발행연도
2009.1
수록면
279 - 290 (12page)

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Two degrees of freedom resonant systems are employed to improve the resonant property of resonant sensor, as compared to a single degree of freedom resonant system. This paper presents design, development and testing of two degrees of freedom resonant sensor. To measure absolute mass, cantilever shaped two different masses (smaller/absorber mass and bigger/drive mass) with identical resonant frequency are mechanically linked to form 2 - Degree-of-Freedom (DOF) resonator which exhibits higher amplitude of displacement at the smaller mass. The same concept is extended for measuring differential quantity, by having two bigger mass and one smaller mass. The main features of this work are the 3 - DOF resonator for differential detection and the microcontroller based closed loop electronics for resonant sensor with piezoelectric sensing and excitation. The advantage of using microcontroller is that the method can be easily extended for any range of measurand.

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