航空学报 > 2024, Vol. 45 Issue (S1): 730745-730745   doi: 10.7527/S1000-6893.2024.30745

基于误差累积因子的高超声速飞行器渐进控制

梁帅1(), 高广乐1, 曲晓雷2, 李雅君3   

  1. 1.西安理工大学 自动化与信息工程学院,西安 710048
    2.西北工业大学 自动化学院,西安 710129
    3.西安现代控制技术研究所,西安 710021
  • 收稿日期:2024-05-29 修回日期:2024-06-11 接受日期:2024-07-03 出版日期:2024-12-25 发布日期:2024-07-22
  • 通讯作者: 梁帅 E-mail:shuailiang@mail.nwpu.edu.cn
  • 基金资助:
    国家自然科学基金(42404014)

Asymptotic control of hypersonic flight vehicle based on error accumulation factor

Shuai LIANG1(), Guangle GAO1, Xiaolei QU2, Yajun LI3   

  1. 1.School of Automation and Information Engineering,Xi’an University of Technology,Xi’an 710048,China
    2.School of Automation,Northwestern Polytechnical University,Xi’an 710129,China
    3.Xi’an Modern Control Technology Research Institute,Xi’an 710021,China
  • Received:2024-05-29 Revised:2024-06-11 Accepted:2024-07-03 Online:2024-12-25 Published:2024-07-22
  • Contact: Shuai LIANG E-mail:shuailiang@mail.nwpu.edu.cn
  • Supported by:
    National Natural Science Foundation of China(42404014)

摘要:

针对高超声速飞行器的轨迹跟踪问题,开展基于误差累积因子的渐进自适应控制方法研究。考虑模型未知,尽管传统基于神经网络/模糊系统的智能控制算法能够通过对模型中未知动态进行重构和补偿实现对期望指令的稳定跟踪,但是由于重构误差的存在,并不能获得精确跟踪结果。为解决高超声速飞行器在未知模型下的渐进跟踪控制问题,通过引入误差累积因子的概念构建了一种改进型Lyapunov函数,并基于此设计了一种新型模糊自适应控制算法,该算法通过保证设计的Lyapunov函数始终有界来实现系统的渐进跟踪性能,无需对模糊重构误差进行额外处理。Lyapunov稳定性理论证明了闭环系统的稳定性,对比仿真验证了所提控制算法的有效性。

关键词: 高超声速飞行器, 误差累积因子, 渐进控制, 重构误差, 自适应控制

Abstract:

Aiming at the trajectory tracking problem of hypersonic flight vehicle, an asymptotic adaptive control method based on error accumulation factor is studied. This paper investigates the problem of asymptotic tracking control of hypersonic flight vehicle with unknown model. Considering the model unknown, the traditional intelligent control algorithm based on the neural network/fuzzy system can achieve stable tracking of the expected instructions by reconstructing and compensating for the unknown dynamics in the model, but it cannot obtain accurate tracking results due to the existence of reconstruction errors. To solve the problem of asymptotic tracking control of hypersonic flight vehicle with unknown model, a Modified Lyapunov Function (MLF) is constructed by introducing the concept of error accumulation factor, and a new fuzzy adaptive control algorithm is designed based on the MLF. By ensuring the boundedness of the modified Lyapunov function, the algorithm can achieve asymptotic tracking without extra processing of the fuzzy reconstruction error. The stability of the closed-loop system is proved by means of the Lyapunov stability theory, and the effectiveness of the control algorithm proposed is verified by comparison with the simulation results.

Key words: hypersonic flight vehicle, error accumulation factor, asymptotic control, reconstruction error, adaptive control

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