高超声速飞行器基于Back-stepping的离散控制器设计  

Discrete-time controller design for hypersonic vehicle via back-stepping

作　　者：高道祥[1,2,3] 孙增圻[1,2] 杜天容[3] 

机构地区：[1]清华大学计算机科学与技术系,北京100084 [2]清华大学智能技术与系统国家重点实验室,北京100084 [3]北京林业大学工学院,北京100083

出　　处：《控制与决策》2009年第3期459-463,467,共6页Control and Decision

基　　金：中国博士后科学基金项目(20070410528);国家自然科学基金项目(90405017;90716021;60604010);空间智能控制技术国家级重点实验室基金项目(SIC07010202)

摘　　要：根据高超声速飞行器纵向模型的特点,提出了基于Back-stepping的离散控制器设计方法.首先通过合理的简化,将飞行器的模型转化为连续非线性系统的严格反馈形式;然后采用欧拉法得到其近似的离散模型,根据近似离散模型并结合Back-stepping和反馈线性化方法,设计了高超声速飞行器的离散控制器.利用高超声速飞行器的纵向模型对算法进行仿真验证,得到了较为满意的控制效果.A discrete control strategy via back-stepping design is proposed for the hypersonic aircraft according to its dynamic characteristic. The continuous model is firstly transformed into a strict-feedback form by ignoring some less important elements. The discrete-time approximation model of the hypersonic vehicle is obtained by discretizing the continuous model in a strict-feedback form through Euler approximation. The discrete control law is developed by using back-stepping design and feed-back linerization. The longitudinal model of a hypersonic aircraft is used to demonstrate the effectiveness of the proposed strategy. Simulation results show an expected tracking performance.

关 键 词：高超声速飞行器 离散控制 Back-stepping 飞行控制 

分 类 号：V249.1[航空宇航科学与技术—飞行器设计]