飞机飞行动力学仿真气动导数求解插值算法对比  

Comparison of Several Interpolation Algorithms in Flight Simulation

作　　者：张玉镇[1] 张志春[1] 陈蕾[1] 向英杰[1] 

机构地区：[1]空军航空大学,吉林长春130022

出　　处：《指挥控制与仿真》2017年第3期70-73,共4页Command Control & Simulation

摘　　要：影响飞行仿真系统实时性和逼真度的重要因素之一,是在力与力矩模块求解中的气动导数求解。气动导数作为飞行动力学仿真模型计算的输入量,其求解运算的精度和效率,将在很大程度上影响着仿真系统的成败。在飞行仿真中,常用的插值算法有线性插值、拉格朗日插值、牛顿插值、三次样条插值。针对这四种插值算法,首先从数学原理上进行初步分析,然后根据风洞实验获取的一组原始气动数据,利用Matlab进行插值实验对比,进一步从四种算法的运算时间、精度上比较分析,最后总结出四种算法的特点。One of the most important factors that affect the real- time performance and fidelity of flight simulation system is to solve the aerodynamic derivatives of the force and torque module. As the input of the simulation model,the accuracy and efficiency of the calculation of aerodynamic derivatives will affect the success or failure of the simulation system to a great ex-tent. In flight simulation, the commonly used interpolation algorithms are linear interpolation, Lagrange interpolation, Newton interpolation,three spline interpolation. In this paper the four kinds of interpolation algorithm,firstly analyzed from the mathematical principle,and dynamic data according to a set of raw- gas obtained by wind tunnel experiment,compares the interpolation by MATLAB,further from four kinds of algorithm,the accuracy of comparative analysis,finally summed up the characteristics of four algorithms.

关 键 词：飞行仿真 线性插值 拉格朗日插值 牛顿插值 三次样条插值 

分 类 号：TP391[自动化与计算机技术—计算机应用技术] E917[自动化与计算机技术—计算机科学与技术]