Ring-shape SMA micro actuator with parylene retention spring for low power consumption, large displacement linear actuation

T. D.O. Moura, T. Tsukamoto, D. W. De Lima Monteiro, S. Tanaka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

This paper reports a novel ring-shape micro actuator for a latching mechanism used in a low power consumption and large displacement micro linear actuation. The proposed actuator consists of a shape memory alloy (SMA) ring, parylene spring and shoes. The parylene spring was carefully designed for independent control of radial and axial stiffness, which can be realized by a high aspect ratio cross section and a meander structure. The maximum force generated by the parylene spring was about 40 mN. Two types of SMA actuator was examined for the actuation: simple wire and micro spring types. The maximum displacement as high as 300 μm was obtained by using the SMA micro spring.

Original languageEnglish
Title of host publication2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2148-2151
Number of pages4
ISBN (Electronic)9781479989553
DOIs
Publication statusPublished - 2015 Aug 5
Event18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015 - Anchorage, United States
Duration: 2015 Jun 212015 Jun 25

Publication series

Name2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015

Other

Other18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015
CountryUnited States
CityAnchorage
Period15/6/2115/6/25

Keywords

  • Micro Linear Actuator
  • Parylene spring
  • Shape Memory Alloy (SMA)
  • Variable focus lens system

ASJC Scopus subject areas

  • Instrumentation
  • Electrical and Electronic Engineering

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    Moura, T. D. O., Tsukamoto, T., De Lima Monteiro, D. W., & Tanaka, S. (2015). Ring-shape SMA micro actuator with parylene retention spring for low power consumption, large displacement linear actuation. In 2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015 (pp. 2148-2151). [7181384] (2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/TRANSDUCERS.2015.7181384