| 一种高超声速飞行器的非线性再入姿态控制方法 |
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| 引用本文： | 张军,毕贞法,邵晓巍.一种高超声速飞行器的非线性再入姿态控制方法[J].空间控制技术与应用,2008,34(4):51-54. |
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| 作者姓名： | 张军 毕贞法 邵晓巍 |
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| 作者单位： | 1. 上海宇航系统工程研究所,上海,201108
2. 上海交通大学空天学院,上海,200240 |
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| 摘 要： | 针对高超声速飞行器的再入非线性动力学模型，利用SDRE（state dependent Riccati equation）设计姿态控制器。基于奇异摄动理论，把姿态动力学分解成姿态角和姿态角速度跟踪内、外环回路，同时把非线性动力学伪线性化。每个跟踪回路用SDRE获得控制律，考虑到SDRE局部渐近稳定的特点，可以保证系统闭环稳定。最后设计高超声速飞行器飞行控制系统，并在高超声速条件下进行仿真，验证了该方案的有效性。
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| 关 键 词： | 高超声速飞行器 SDRE 非线性系统 姿态控制 |
A Nonlinear Entry Attitude Control Method for Hypersonic Vehicles |
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| ZHANG Jun,BI Zhenfa,SHAO Xiaowei.A Nonlinear Entry Attitude Control Method for Hypersonic Vehicles[J].Aerospace Contrd and Application,2008,34(4):51-54. |
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| Authors: | ZHANG Jun BI Zhenfa SHAO Xiaowei |
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| Abstract: | A controller is designed using the state dependent Riccati equation theory for nonlinear re-entry attitude dynamics of a hypersonic vehicle.The dynamics is separated into fast and slow loops as attitude angular and attitude angular velocity based on the singular perturbation theory,simultaneously,the nonlinear attitude dynamic equations are pseudo-linearied based on the state dependent coefficient.Each loop gets the dynamic control law by solving optimal SDRE.The characteristics of SDRE theory guarantee clo... |
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| Keywords: | hypersonic vehicle SDRE nonlinear system attitude control |
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