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

3 Citations (Scopus)


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
Issue number5 II
Publication statusPublished - 2003 Sept
Externally publishedYes


  • Nanoscale actuators
  • Permanent magnets
  • Piezoelectric devices

ASJC Scopus subject areas

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


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