윤곽오차 벡터를 이용한 윤곽오차 모델 설계

Design of Contour Error Models using Contour Error Vector

  • 최정희 (경북대 대학원 기계공학과) ;
  • 이명훈 (경북대 대학원 기계공학) ;
  • 양승한 (경북대학교 기계공학부)
  • 발행 : 2003.06.01

초록

The higher precision is demanded in modem manufacturing and it requires the more accurate servo controller. Cross-coupling control (CCC) has been developed to improve contouring motion. In this paper we introduce a new nonlinear CCC that is based on contour-error-vector using a parametric curve interpolator. A vector from the actual tool position to the nearest point on the desire path is directly adopted. The contour-error-vector is determined by constructing a tangential vector of nearest point on desired curve and determining the vector perpendicular to this tangential vector from the actual tool position. Moreover, the vector CCC can apply directly and easily to free-form curves include convex and concave form. The experimental results on a three-axis CNC machine center show that the present approach significantly improves motion accuracy in multi-axis motion

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