Journal of System Simulation ›› 2016, Vol. 28 ›› Issue (10): 2400-2406.

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Quadratic Rational Trigonometric Spline Curves with Shape Controlling

Liu Xinru1,2, Wei Manman1, Liu Shengjun1,2,*, Yang Dangfu1   

  1. 1. School of Mathematics and Statistics, Central South University, Changsha 410083, China;
    2. Institute of Engineering Modeling and Scientific Computing, Central South University, Changsha 410083, China
  • Received:2016-05-31 Revised:2016-07-19 Online:2016-10-08 Published:2020-08-13

Abstract: A new quadratic rational trigonometric spline curve with a shape parameter was proposed. The value control and the inflection-point control of the interpolation scheme were discussed in theory. And the optimal methods for calculating the desired inflection-points was proposed, by using optimization theory. Numerical experiments show the interpolation spline and the optimization method can be used in modeling design.

Key words: rational trigonometric spline, value control, inflection-point control, optimization

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