Mechanically coupled high dynamic linear motors - A new design approach and its control strategy

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Matthias Rehm - , Chemnitz University of Technology (Author)
  • Steffen Ihlenfeldt - , Fraunhofer Institute for Machine Tools and Forming Technology (Author)
  • Holger Schlegel - , Chemnitz University of Technology (Author)
  • Welf Guntram Drossel - , Chemnitz University of Technology, Fraunhofer Institute for Machine Tools and Forming Technology (Author)

Abstract

Improved drive dynamics decisively boost productivity and accuracy of machine tools. Linear motors have advantages to overcome drawbacks of electromechanical drives, but are limited by their power density. Reaction forces of linear motors cause undesired excitation of the machine structure. Current research approaches focus on impulse decoupling and compensation as well as on force reduction. The paper presents a new design approach, characterised by two mechanically coupled and opposite driving linear motors. This arrangement improves the static and dynamic properties by force distribution which leads to an impulse-free feedback system. In order to have an effective use of the gained dynamics various control structures for coupled drives are investigated. Tuning methods as well as simulation and experimental results are discussed.

Details

Original languageEnglish
Pages (from-to)381-384
Number of pages4
JournalCIRP Annals - Manufacturing Technology
Volume63
Issue number1
Publication statusPublished - 2014
Peer-reviewedYes
Externally publishedYes

Keywords

Keywords

  • Control, Coupled drives, Linear motor