| 基于GPM的高超声速飞行器再入轨迹优化 |
| |
| 引用本文： | 王莉,刘旭,王海东,徐晶晶,赵时.基于GPM的高超声速飞行器再入轨迹优化[J].飞机设计,2014(6):13-16. |
| |
| 作者姓名： | 王莉 刘旭 王海东 徐晶晶 赵时 |
| |
| 作者单位： | 海军航空工程学院青岛校区,山东青岛266041 |
| |
| 摘 要： | 为保证高超声速飞行器具有最大再入距离,应用高斯伪谱方法求取了存在路径约束及终端约束的飞行器最优再入轨迹。首先选取迎角及倾斜角作为最优控制量,并分析再入轨迹的最优控制模型;然后应用高斯伪谱方法将最优控制问题离散成非线性规划问题,并采用SNOPT软件包对非线性问题进行求解,得到最优轨迹。通过仿真证明了该方法求得的最优轨迹对初始值不敏感,且具有良好的实时性。
|
| 关 键 词： | 高斯伪谱方法 再入 轨迹优化 非线性规划 |
Reentry Trajectoy Optimization for Hypersonic Vehicle Based on GPM |
| |
| WANG Li,LIU Xu,WANG Hai-dong,XU Jing-jing,ZHAO Shi.Reentry Trajectoy Optimization for Hypersonic Vehicle Based on GPM[J].Aircraft Design,2014(6):13-16. |
| |
| Authors: | WANG Li LIU Xu WANG Hai-dong XU Jing-jing ZHAO Shi |
| |
| Institution: | ( Qingdao Branch, Naval Aeronautical Engineering University, Qingdao 266041, China ) |
| |
| Abstract: | In order to obtain the maximum reentry range of hypersonic vehicle, the gauss pseudo-spectral method （GPM） is used to solve the reentry trajectory, satisfying both path constraints and terminal constraints. The attack angle and bank angle are chosen as optimal control variables. The optimal control model of reentry trajectory is analyzed, and GPM is applied to discretize the optimal problem into nonlinear programming problem （NLP）. Finally, matlab software package SNOPT is used to solve the NLP problem. Numerical simulations show that the trajectory derived by this method is not sensitive to initial conditions and fairly good in real-time property. |
| |
| Keywords: | gauss pseudo-spectral method reentry trajectory optimiztion NLP |
| 本文献已被 维普 等数据库收录！ |
|
