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Real-time NURBS curve interpolator based on section

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Abstract

Parameter interpolation is more capable of modern computer numerical control (CNC) than traditional linear/circular interpolation with higher speed and higher precision. Most of non-uniform rational B-spline (NURBS) interpolation algorithms were developed based on the chord error and machines capability, where interpolation points are calculated beforehand to overcome acceleration/deceleration (acc/dec) and jerk problem, which needs large memory. In this paper, a NURBS interpolator based on feedrate section is proposed. Instead of a single interpolation point, this interpolator aims to feedrate section, which makes it possible to run on a digital signal processor or field programmable gate array (FPGA) whose memory is limited. Experiment on FPGA showed the performance of interpolation. A mould experiment verifies the feasibility of application.

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Authors and Affiliations

  1. School of Mechanical and Electronic, China University of Geosciences, Wuhan, 430074, China

    Xiaoyong Ni, Dianhong Wang & Yongbo Li

Authors
  1. Xiaoyong Ni
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  2. Dianhong Wang
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  3. Yongbo Li
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Correspondence to Xiaoyong Ni.

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Ni, X., Wang, D. & Li, Y. Real-time NURBS curve interpolator based on section. Int J Adv Manuf Technol 54, 239–249 (2011). https://doi.org/10.1007/s00170-010-2923-9

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  • DOI: https://doi.org/10.1007/s00170-010-2923-9

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