对于有转速脉冲信号的情况，实现了基于一阶数字微分和最小二乘五点三次平滑方法的转速曲线计算方法。
When the speed pulse signal is provided, a calculation of the speed curve is achieved using first order digital differential method and the lease square of five points three times smoothing approach.
虽然样条曲线具有广泛的应用，但对五次样条插值算法的研究却很少。
Although spline curves are applied widely, but the research on the algorithms of quintic spline interpolation is little.
利用五次多项式曲线对挑线凸轮进行了设计；并根据刺绣机的特殊要求，提出了刺绣机最优化设计方法。
Based on the curve of quintic polynomial, the take-up CAM is designed, and the method of optimized design is presented in this paper.
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