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现有的高超声速飞行器拟合建模方法较为耗费时间与计算机资源。针对此问题,首先通过方幂好格子点法生成均匀设计表,借助均匀设计获取拟合数据集与验证数据集。然后利用逐步回归方法对数据集进行拟合,获取高超声速飞行器的高精度曲线拟合模型。仿真对比分析表明,所介绍的高超声速飞行器曲线拟合建模方法高效、可靠,所建立的曲线拟合模型与原始物理模型的一致程度及精度均优于现有拟合模型,而所消耗的时间与计算机资源小于现有拟合方法。
The existing hypersonic vehicle modeling methods are time-consuming and computationally intensive. To solve this problem, we first generate a uniform design table by using the power-good grid point method and obtain the fitted data set and the verified data set by means of uniform design. Then, the data set was fitted by stepwise regression to get the high precision curve fitting model of hypersonic vehicle. The simulation analysis shows that the presented hypersonic vehicle curve fitting modeling method is efficient and reliable. The consistency and accuracy of the established curve fitting model and the original physical model are better than those of the existing fitting model, and the consumed Time and computer resources are less than the existing fitting method.