系统工程与电子技术 ›› 2022, Vol. 44 ›› Issue (8): 2593-2600.doi: 10.12305/j.issn.1001-506X.2022.08.24

• 制导、导航与控制 • 上一篇    下一篇

基于扰动观测器的飞行器轨迹跟踪控制器设计

李传旭1, 孟秀云1,*, 王捷2   

  1. 1. 北京理工大学宇航学院, 北京 100081
    2. 北京电子工程总体研究所, 北京 100854
  • 收稿日期:2021-11-12 出版日期:2022-08-01 发布日期:2022-08-24
  • 通讯作者: 孟秀云
  • 作者简介:李传旭(1997—), 男, 硕士研究生, 主要研究方向为飞行器制导与控制|孟秀云(1964—), 女, 教授, 博士, 主要研究方向为飞行器导航制导与控制、系统仿真|王捷(1993—), 男, 工程师, 博士, 主要研究方向为飞行器制导与控制

Design of aircraft trajectory tracking controller based on disturbance observer

Chuanxu LI1, Xiuyun MENG1,*, Jie WANG2   

  1. 1. School of Aerospace Engineering, Bejing Institute of Technology, Beijing 100081, China
    2. Beijing Institute of Electronic System Engineering, Beijing 100854, China
  • Received:2021-11-12 Online:2022-08-01 Published:2022-08-24
  • Contact: Xiuyun MENG

摘要:

针对多种扰动作用下的固定翼飞行器三维轨迹跟踪问题, 设计了一种基于改进非线性扰动观测器的非奇异快速终端滑模轨迹跟踪控制器。首先推导固定翼飞行器三维轨迹跟踪误差模型, 考虑模型误差和飞行过程中的未知扰动, 设计了一种基于状态估计误差反馈的非线性扰动观测器对扰动进行观测。基于非奇异快速终端滑模控制方法, 采用双幂次趋近律设计轨迹跟踪控制器, 并证明了闭环控制系统的稳定性。仿真结果表明, 在多种扰动的作用下, 所设计的轨迹跟踪控制器能够对三维机动轨迹进行准确、稳定的跟踪。

关键词: 轨迹跟踪, 扰动观测器, 终端滑模, 双幂次趋近律, 固定翼飞行器

Abstract:

Aiming at the tracking of the three-dimensional trajectory of fixed-wing aircraft under various disturbances, a non-singular fast terminal sliding mode (TSM) trajectory tracking controller based on an improved nonlinear disturbance observer is proposed. Firstly, a three-dimensional trajectory tracking error model of the fixed-wing aircraft is derived. Considering the model error and the unknown disturbance during the flight, a nonlinear disturbance observer based on state estimation error feedback is designed to observe disturbances. Based on the non-singular fast TSM control method, the trajectory tracking controller is designed with the double power reaching law, and the stability of the closed-loop control system is proved. Simulation results show that the designed trajectory tracking controller can accurately and stably track the three-dimensional maneuvering trajectory under various disturbances.

Key words: trajectory tracking, disturbance observer, terminal sliding mode (TSM), double power reaching law, fixed-wing aircraft

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