| 基于速度平滑控制的高效非均匀有理B样条曲线插补算法 |
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| 引用本文： | 孙玉娥,林浒,盖荣丽. 基于速度平滑控制的高效非均匀有理B样条曲线插补算法[J]. 计算机集成制造系统, 2008, 14(11) |
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| 作者姓名： | 孙玉娥 林浒 盖荣丽 |
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| 作者单位： | 中国科学院沈阳计算技术研究所,辽宁,沈阳,110171;中国科学院沈阳计算技术研究所,辽宁,沈阳,110171;中国科学技术大学计算机科学技术系,安徽,合肥,230026 |
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| 基金项目： | 国家发改委高技术产业化专项资助项目，国家科技部科技攻关计划资助项目 |
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| 摘 要： | 为提高曲面加工的质量和效率,提出了一种基于冗余误差和速度平滑控制的非均匀有理B样条曲线插补算法.该算法先按照曲率大小将非均匀有理B样条曲线分段,再根据数控机床最大加速度调整分段.消除了曲率突变对加工的负面影响.同时为每个分段分别设置合适的编程进给速度,提高了加工效率.最后提出两段速度平滑控制方法,使速度过渡更为平滑.模拟试验证明了该算法的有效性.
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| 关 键 词： | 非均匀有理B样条 速度平滑 插补 加工 曲率 |
Effective NURBS interpolation algorithm based on velocity smooth control |
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| SUN Yue,LIN Hu,GAI Rong-li. Effective NURBS interpolation algorithm based on velocity smooth control[J]. Computer Integrated Manufacturing Systems, 2008, 14(11) |
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| Authors: | SUN Yue LIN Hu GAI Rong-li |
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| Affiliation: | SUN Yu-e1,LIN Hu1,GAI Rong-li1,2(1.Shenyang Institute of Computing Technology,Chinese Academy of Sciences,Shenyang 110171,China,2.Departement of Computer Science & Technology,University of Science & Technology of China,Hefei 230026,China) |
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| Abstract: | To improve the machining quality and the efficiency of curves,a novel Non-Uniform Rational B-Spline(NURBS) interpolation algorithm based on redundancy error and velocity smooth control was proposed.To eliminate the negative influence of the sudden change of curvature,the NURBS curve was divided into small segments according to their different curvatures,and then changed the segments according to the max acceleration of Computer Numerical Control(CNC) machine.Each segment was equipped with an appropriate fee... |
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| Keywords: | non-uniform rational b-spline velocity smooth interpolation machining curvature |
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