2-axis resonant microstage using single piezoelectric moonie-type Microactuator

Yasuhiro Fujimura, Takashiro Tsukamoto, Shuji Tanaka

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


This paper reports a 2-axis in-plane resonator driven by a single piezoelectric actuator for a speckle dissolution device used in a laser-type projector. A PZT (lead zirconate titanate) unimorph actuator combined with a Moonie type displacement amplifier and 2-axis resonance structure was used to obtain large displacement. Both axes have different resonance frequencies (387.76 Hz and 323.34 Hz) and thus can be independently controlled by the single resonator with these frequencies superposed. The maximum displacement as high as 50 μm for both x- and y-directions was obtained. The proposed driving method can reduce the device size to about a half of the previously reported device with 2 actuators.

Original languageEnglish
Pages (from-to)516-522
Number of pages7
JournalIEEJ Transactions on Sensors and Micromachines
Issue number11
Publication statusPublished - 2018


  • Moonie actuator
  • PZT
  • Piezoelectric device
  • Speckle dissolution device

ASJC Scopus subject areas

  • Mechanical Engineering
  • Electrical and Electronic Engineering


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