The effects of the potential and polarization time on the performance of ionic polymer metal composite actuators: a control of forward and reverse displacements

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公開日
2007-02-26
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1002/pat.893
公開者
Wiley

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<jats:title>Abstract</jats:title><jats:p>This paper focuses on the dependence of various waveforms of the potential on the displacement of Nafion‐platinum based IPMC actuators at 40 and 90% relative humidity (RH). In comparison with simpler square waveforms, a waveform that is being composed by inclusion of a rest potential of 0 V has given a longer displacement. This benefit was effective at lower humidity conditions. By a polarization, the actuators show three major displacement processes of maximum forward displacement, steady forward displacement, and maximum reverse displacement. Here, the dependence of the potential and polarization time on these displacements has been carefully examined. An increase in the forward displacement by the potential does not strongly affect a slower reverse relaxation. To give a suitable relaxation period before a polarity switching of the potential seems effective to release the internal stress of the actuator. An elevated drive potential has decreased in the bending speed apparently. Finally, it has been noted that the ‘recovery’ of the maximum displacement is possible if a suitable waveform is applied to the actuator. This recovery effect is more remarkable at higher dive potential. Copyright © 2007 John Wiley & Sons, Ltd.</jats:p>

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