Design of Mechanical Band-Pass Filters for Energy Scavenging: Multi-Degree-of-Freedom Models

SAGE Publications - Tập 14 Số 5 - Trang 753-768 - 2008
S.M. Shahruz1
1Berkeley Engineering Research Institute, P.O. Box 9984, Berkeley, CA 94709, USA

Tóm tắt

In this article, a model of a mechanical band-pass filter to be used in energy scavengers is studied. The filter is an ensemble of cantilever beams where at the tip of each beam a mass, known as the proof mass, is mounted. A beam with a proof mass at its tip is called a beam-mass system. The dynamics of a beam-mass system can be represented by its corresponding generalized single-degree-of-freedom (SDoF) system. Using this model, dimensions of the beams and masses of the proof masses of beam-mass systems can be determined, so that an ensemble of such systems would function as a band-pass filter. To verify the adequacy of the SDoF model in representing the dynamics of the infinite-dimensional beam-mass system, a two-degree-of-freedom (TDoF) model of this system is developed. This model affirms that, as far as the energy scavenging is concerned, the SDoF model adequately represents the dynamics of the infinite-dimensional beam-mass system. Consequently, in designing mechanical band-pass filters, it is sufficient to use the SDoF models of the beam-mass systems.

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Tài liệu tham khảo

10.1109/4.668982

10.1088/0964-1726/16/3/R01

10.1177/1045389X06057533

10.1088/0957-0233/17/12/R01

10.1121/1.1908470

10.1007/s10832-006-6287-3

10.1177/1045389X05056683

10.1080/10584580590964574

10.1080/10584580600949048

10.1049/ip-smt:20010323

10.1109/TUFFC.2005.1428041

10.1016/j.sna.2004.12.032

10.1088/0964-1726/14/4/036

Karnovsky, I.A., 2004, Free Vibration of Beams and Frames

Lancaster, P., 1966, Lambda-matrices and Vibrating Systems

10.1016/j.sna.2005.10.043

10.1088/0964-1726/15/5/039

Meirovitch, L., 1967, Analytical Methods in Vibration

10.1109/92.920820

10.1109/JMEMS.2004.830151

10.1007/978-1-4615-0485-6

Shabana, A.A., 1991, Theory of Vibration, Volume II: Discrete and Continuous Systems

10.1016/j.jsv.2005.08.018

10.1016/j.jsv.2005.09.022

10.1016/j.mechatronics.2006.04.003

10.1049/el:19971262

10.1088/0964-1726/15/6/001

10.1177/0583102404043275

10.1088/0964-1726/10/4/403

10.1016/S0022-460X(03)00750-8

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SAGE Publications

Tập 14 Số 5

753-768

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