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TECHNICAL PAPERS

Comprehensive Assessment of Semi-Active Vibration Suppression Including Energy Analysis

[+] Author and Article Information
Kanjuro Makihara1

Institute of Space and Astronautical Science,  Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Sagamihara, Kanagawa, 229-8510, Japankanjuro@svs.eng.isas.jaxa.jp

Junjiro Onoda, Kenji Minesugi

Institute of Space and Astronautical Science,  Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Sagamihara, Kanagawa, 229-8510, Japan

1

Corresponding author.

J. Vib. Acoust 129(1), 84-93 (Apr 17, 2006) (10 pages) doi:10.1115/1.2345675 History: Received March 23, 2005; Revised April 17, 2006

This paper presents an extensive investigation on the LR-switching method (also called the energy-recycling semi-active method). Compared with the energy-dissipative R-switching method, the LR-switching method has been shown to have significantly better vibration suppression performance. However, certain essential issues affecting a system employing the LR-switching method remained to be dealt with. In particular, we had to clarify its vibration suppression mechanism from the viewpoint of mechanical and electrical energy exchange. Second, the robustness of the method against model errors and control time delays had to be verified. The experiments and numerical simulations that we conducted on a 10-bay truss structure demonstrate that the LR-switching method outperforms other suppression methods under sinusoidal and random excitations, which are more common in real systems and more difficult to deal with than transient vibrations. This paper provides fundamental insights on the LR-switching method and gives the method a guarantee for actual applications.

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Copyright © 2007 by American Society of Mechanical Engineers
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Figures

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Figure 1

Example of an MDOF system: A 10-bay truss with three piezoelectric transducers

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Figure 2

Circuits for R-switching method (A′) and for LR-switching method (B′)

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Figure 3

Comparison of energy transitions of three single-mode vibration suppression methods

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Figure 4

Performance measure (Jrms) for suppression of vibration with sinusoidal excitation

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Figure 5

Performance measure (Irms) for suppression of vibration with random excitation

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Figure 6

Time histories of vibration suppression for LR-switching method given a random excitation

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Figure 7

Performance measure (Irms) for suppressing influence of control time delay

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Figure 8

Performance measure (Irms) for robustness to model errors

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Figure 9

10-bay truss with a piezoelectric transducer and block diagram of control flow

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Figure 10

Time histories of two-mode suppression experiment on LR-switching method

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Figure 11

Performance measure (J2rms) for vibration suppression experiment with sinusoidal excitation

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