A new adaptive interpolation scheme of NURBS based on axis dynamics.

A new interpolation scheme for 2D NURBS curve is proposed in this paper. The scheme contains two steps, pre-processing and real-time interpolation, which are bridged by circular buffer and table look-up method in order to improve the data utilization and simplify the calculation process. The pre-processing divides the curve into segments by dangerous points, then real-time interpolation is implemented within the segment unit. During this process, adaptive interpolation algorithm adjusts the feed rate according to the curvature which guarantees the contour accuracy; meanwhile, the axis dynamics module confines the dynamics parameters of every axis within limits, without requiring look-ahead and backtracking strategy. At the end, experiments verify the high efficiency and reliability of the algorithm. [ABSTRACT FROM AUTHOR]