A precise rotary actuator based on small perimeter difference using parallel compliant mechanism

  • Chengwu Li
  • , Gang Ma
  • , Xu Pei*
  • , Bilu Fang
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In the precise position fields, precise rotary actuators have played an important role all the time. In this paper, a precise rotary actuator based on small perimeter difference using parallel compliant mechanism is developed. With the help of parallel compliant mechanism, the precise rotary actuator has simple structure, few components and easy assembly procedures. In this paper, the parallel compliant mechanism consists of 16 right circular flexure hinges, where can produce micro displacement and keep high stiffness. Piezoceramic (PZT) is used to drive the parallel compliant mechanism. Because of its high resolution and other advantages of performances, the precise rotary actuator has high rotational motion resolution, which can reach microradian (μrad) level. The angular velocity and the torque are analyzed. Besides the stiffness and stress of compliant mechanism is calculated, which were validated by simulations of nonlinear Finite Element Analysis (FEA). We think the precise rotary actuator has certain application prospect.

Original languageEnglish
Title of host publicationMechanisms and Machine Science
EditorsXilun Ding, Xianwen Kong, Jian S. Dai, Jian S. Dai
PublisherKluwer Academic Publishers
Pages405-417
Number of pages13
ISBN (Print)9783319233260
DOIs
StatePublished - 2016

Publication series

NameMechanisms and Machine Science
Volume36
ISSN (Print)2211-0984
ISSN (Electronic)2211-0992

Keywords

  • Parallel compliant mechanism
  • Rotary actuator
  • Small perimeter difference

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