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建立了任意空间抛物线的数学模型和五坐标的编程模型，提出了空间抛物线的迭代插补方法及旋转坐标和线性坐标的插补方法，推导出速度误差、弓高误差和旋转坐标误差的误差估计公式，实例分析表明，该方法具有较小的速度误差和轨迹误差．
A mathematical model of parabola and a five-coordinate programming model are established. An iterative interpolation method of parabola and an interpolation method of rotation coordinates and linear coordinates are proposed. Error estimates of velocity error, bow height error and rotation coordinate error are deduced The formula and the example analysis show that this method has smaller velocity error and path error.