Papers

Oct 25, 2006

Tailor-made Multilayer Piezoelectric Actuator Having Large Displacements and Forces

Transactions of the Japan Society of Mechanical Engineers C
  • MOTOO Kohei
  • ,
  • TODA Naoya
  • ,
  • ARAI Fumihito
  • ,
  • FUKUDA Toshio
  • ,
  • MATSUNO Takayuki
  • ,
  • KIKUTA Koichi
  • ,
  • HIRANO Shin-ichi

Volume
72
Number
722
First page
3302
Last page
3309
Language
Japanese
Publishing type
Publisher
The Japan Society of Mechanical Engineers

We propose tailor-made multilayer piezoelectric actuators (TAMPA) having large displacements and large forces. In existing piezoelectric actuators, production of small, low-cost actuators having large displacements and large forces is difficult to achieve. We solved this problem by combining two bimorph-type piezoelectric elements with both ends simply supported, and stacking several elements on top of each other. Moreover, TAMPA is a tailor-made actuator whose displacement to force ratio can be varied widely by adjusting the size of the bimorph-type piezoelectric elements even when the total size of the actuator is kept constant. In this study, the bimorph-type piezoelectric element was analyzed, and the relationship between the displacement and the force under fixed conditions was experimentally determined. The relationship between the displacement and the force of TAMPA was theoretically derived. The analytical results showed that a TAMPA having dimensions of approximately 10×10×10mm is capable of generating displacements of several hundred μm or the force of several N. A prototype was produced and its performance was evaluated. These results agreed well with the analytical results, confirming the validity of the analytical results. Finally, because the lead in PZT can cause environmental problems, a TAMPA was produced that used (K, Na) (Nb, Ta) O_3 piezoelectric ceramics instead of lead.

Link information
J-GLOBAL
https://jglobal.jst.go.jp/en/detail?JGLOBAL_ID=200902274826971864
CiNii Articles
http://ci.nii.ac.jp/naid/110004837623
CiNii Books
http://ci.nii.ac.jp/ncid/AN00187463
URL
http://id.ndl.go.jp/bib/8556362
ID information
  • ISSN : 0387-5024
  • J-Global ID : 200902274826971864
  • CiNii Articles ID : 110004837623
  • CiNii Books ID : AN00187463

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