Design of a Preload Device for PZT Actuator Using Permanent Magnets

Suk Bae, Chang S. Han, Chan H. Lee, Myounggyu D. Noh

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Piezoelectric actuators must be preloaded to prevent damage due to tensile loading. Spring-preloaded actuators sacrifice some of the total stroke of the actuator. The authors propose a preload device using permanent magnets. By employing magnetic preload, the static performance of the actuator is improved, while increasing the total stroke. The proposed preload device decouples the lateral motion of the actuator from the actuating direction, thus eliminating the need for a complex flexure hinge mechanism.

Original languageEnglish
Pages (from-to)2965-2967
Number of pages3
JournalIEEE Transactions on Magnetics
Volume39
Issue number5 II
DOIs
Publication statusPublished - 2003 Sept
Externally publishedYes

Bibliographical note

Funding Information:
Manuscript received January 6, 2003. This work was supported in part by the National Research Laboratory Program, Korea. S. Baek was with the Chungnam National University. He is now with the Korea Institute of Machinery and Materials, Daejeon, Korea (e-mail: whstone@hanmail.net). C. S. Han and C. H. Lee are with the Korea Institute of Machinery and Materials, Daejeon, Korea (e-mail: cshan@kimm.re.kr; chlee@kimm.re.kr). M. D. Noh is with the Department of Mechatronics Engineering, Chungnam National University, Daejeon 305-764, Korea (e-mail: mnoh@cnu.ac.kr). Digital Object Identifier 10.1109/TMAG.2003.816708 Fig. 1. Cross-sectional diagram of a spring-preloaded actuator and its displacement versus voltage input characteristics of the unloaded and preloaded actuators.

Keywords

  • Nanoscale actuators
  • Permanent magnets
  • Piezoelectric devices

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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