Special Motion Commands
4.2 Spline interpolation (ASPLINE, BSPLINE, CSPLINE, BAUTO, BNAT, BTAN, EAUTO, ENAT,
ETAN, PW, SD, PL)
Job planning
Programming Manual, 07/2010, 6FC5398-2BP40-0BA0
243
Spline type Properties and use
C spline
3WR3VSHFLILHGFRRUGLQDWHV
&VSOLQHFXELFVSOLQH
3
3
3
3
3
3
3
Features:
• The passes precisely through the specified intermediate points along the
curve.
• The curve characteristic is tangential with continuous curvature.
• Frequently generates undesirable oscillations, especially at positions where
the gradient changes significantly.
• The area of influence of changes to the intermediate points is global. This
means that if an intermediate point is changed then this influences the
complete curved characteristic.
Application:
The C spline can be well used if the intermediate points lie on a curve that can
be analytically calculated defined (circle, parabola, hyperbola).
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