A multi-axis contour error controller for free form curves

Myung Hoon Lee, Seung Han Yang, Young Suk Kim, Yong Rae Roh, Cheol Kim

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

The growing need for higher precision and productivity in manufacturing industry has lead to an increased interest in computer numerical control (CNC) systems. It is well known fact that the cross-coupling controller (CCC) is an effective method for contouring applications. In this paper, a multi-axis contour error controller (CEC) based on a contour error vector using parametric curve interpolator is presented. The contour error vector is a vector from the actual tool position to the nearest point on the desired path. The contour error vector is the closest error model to the contour error. The simulation results show that the CEC is more accurate than the conventional CCC for a biaxial motion system. In addition, the experimental results on 3-axis motion system show that the CEC is simply applicable to 3-axis motions and contouring accuracy is significantly improved.

Original languageEnglish
Pages (from-to)144-149
Number of pages6
JournalJSME International Journal, Series C: Mechanical Systems, Machine Elements and Manufacturing
Volume47
Issue number1
DOIs
StatePublished - Mar 2004

Keywords

  • Contour error
  • Cross-coupling control
  • Curve interpolator
  • Free form curve
  • Multi-axis contour error controller

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