宇航学报 ›› 2019, Vol. 40 ›› Issue (2): 174-181.doi: 10.3873/j.issn.1000-1328.2019.02.006

• 制导、导航、控制与电子 • 上一篇    下一篇

考虑跟踪性能约束的近空间飞行器控制器设计

董朝阳,刘晨,王青,刘雨昂   

  1. 1. 北京航空航天大学航空科学与工程学院,北京 100191; 2. 北京航空航天大学自动化科学与电气工程学院,北京 100191
  • 收稿日期:2018-10-27 修回日期:2018-11-13 出版日期:2019-02-15 发布日期:2019-02-25
  • 基金资助:

    国家自然科学基金(61833016,61873295);航空科学基金项目(2016ZA51011)

Near Space Vehicle Control with Tracking Performance Constraints

DONG Chao yang, LIU Chen, WANG Qing, LIU Yu ang   

  1. 1. School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China; 2. School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China
  • Received:2018-10-27 Revised:2018-11-13 Online:2019-02-15 Published:2019-02-25

摘要:

针对一类可变后掠角的近空间飞行器(NSV)指令跟踪问题,考虑其受到外界扰动及参数不确定的影响,同时考虑系统的跟踪性能约束及姿态角速度约束,提出了一种基于模糊系统的切换控制器设计方法,确保系统在扰动影响以及给定约束下能够对给定信号进行稳定跟踪。建立了包含未知扰动及不确定项的近空间飞行器非线性切换模型;通过设计模糊系统对系统所受的总干扰进行实时估计,并基于反步法进行了切换控制器设计,在控制器中对干扰进行补偿;通过公共Barrier Lyapunov方法对系统稳定性及动态性能进行了分析。数值仿真算例校验了所提出方法的有效性及优越性。

关键词: 近空间飞行器(NSV), 非线性切换系统, 跟踪性能受限, 状态受限, 模糊系统

Abstract:

 A method for designing a switched controller based on a fuzzy logic system is proposed in this paper for a class of the variable-sweepback-angle near space vehicles (NSV) affected by the external disturbances and parameter uncertainties under the tracking performance and angular rate constraints. The nonlinear switching model of the vehicles containing the unknown disturbances and uncertainties is established. By designing a fuzzy logic system, all the unknown nonlinearities can be real-time estimated. Based on the back-stepping method, a switched controller is designed and the “total disturbances” are compensated in the controller. By means of the common Barrier Lyapunov function theory, it is proved that the proposed control strategy can guarantee the stability of the close-loop switching system and the tracking performance and state constraints are not violated. The numerical examples show the effectiveness and advantages of the proposed method

Key words:  Near space vehicle (NSV), Nonlinear switching system, Tracking performance constraint, State constraint, Fuzzy logic system

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