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Technical Briefs

Reliable and Evolvable Vibration Suppression by Self-Powered Digital Vibration Control

[+] Author and Article Information
Shinsuke Takeuchi, Kanjuro Makihara, Junjiro Onoda

 Department of Space Structure and Material, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara Kanagawa 2525210, Japan e-mail: takeuchi@svs.eng.isas.jaxa.jp Department of Aerospace Engineering, Tohoku University, Sendai Miyagi 9808579, Japan e-mail: makihara@ssl.mech.tohoku.ac.jpDirector General  Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa 2525210, Japan e-mail: onoda@isas.jaxa.jp

J. Vib. Acoust 134(2), 024502 (Jan 18, 2012) (4 pages) doi:10.1115/1.4005027 History: Received December 24, 2010; Revised August 14, 2011; Published January 18, 2012; Online January 18, 2012

A reliable and evolvable vibration suppression technique using a digital processor powered by energy harvested from a piezoelectric element was developed and investigated. This technique, called a self-powered digital vibration control, benefits from both the sophisticated control logic of the digital processor and a reliable self-powered semiactive element. A system embodying this technique consists of a circuit outline, CPU, and DC/DC converter. Two experiments emulating the synchronized switch damping on inductor (SSDI) technique demonstrated its effectiveness for steady inputs as well as transient ones.

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Copyright © 2012 by American Society of Mechanical Engineers
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Figures

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Figure 1

Outline of self-powered digital vibration control system

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Figure 2

Outline of mechanical vibration part

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Figure 3

Closeup around piezo actuator

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Figure 4

Piezoactuator voltage, capacitor voltage, displacement and CPU current around the moment SW0 turned ON (steady-state experiment)

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Figure 5

Piezoactuator voltage, capacitor voltage and displacement around the moment SW0 turned OFF (steady-state experiment)

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Figure 6

Piezoactuator voltage, capacitor voltage, displacement and CPU current when the excitation started (transient experiment)

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