Dynamic characteristics of a hydraulic amplification mechanism for large displacement actuators systems

Xavier Arouette, Yasuaki Matsumoto, Takeshi Ninomiya, Yoshiyuki Okayama, Norihisa Miki

Research output: Contribution to journalArticle

23 Citations (Scopus)


We have developed a hydraulic displacement amplification mechanism (HDAM) and studied its dynamic response when combined with a piezoelectric actuator. The HDAM consists of an incompressible fluid sealed in a microcavity by two largely deformable polydimethylsiloxane (PDMS) membranes. The geometry with input and output surfaces having different cross-sectional areas creates amplification. By combining the HDAM with micro-actuators, we can amplify the input displacement generated by the actuators, which is useful for applications requiring large deformation, such as tactile displays. We achieved a mechanism offering up to 18-fold displacement amplification for static actuation and 12-fold for 55 Hz dynamic actuation.

Original languageEnglish
Pages (from-to)2946-2956
Number of pages11
Issue number4
Publication statusPublished - 2010 Apr 1



  • Dynamic actuation
  • Hydraulic amplification
  • Liquid encapsulation
  • MEMS
  • Tactile display

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Electrical and Electronic Engineering

Cite this