Real-time NURBS curve interpolator based on section
Source: The International Journal of Advanced Manufacturing Technology, Volume 54, Numbers 1-4, April 2011 , pp. 239-249(11)
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.
Document Type: Research Article
Affiliations: 1: School of Mechanical and Electronic, China University of Geosciences, Wuhan, 430074, China, Email: email@example.com 2: School of Mechanical and Electronic, China University of Geosciences, Wuhan, 430074, China
Publication date: 2011-04-01