Robust Finite-Time Control for Guidance Law with Uncertainties in Missile Dynamics

Authors

  • Fazhan Tao Henan University of Science and Technology – College Information Engineering – Luoyang – Henan – China | Longmen Laboratory – Luoyang – Henan – China. https://orcid.org/0000-0001-6721-5354
  • Jingtian Shi Henan University of Science and Technology – College Information Engineering – Luoyang – Henan – China. https://orcid.org/0009-0000-8533-5990
  • Jie Zhang Henan University of Science and Technology – College Information Engineering – Luoyang – Henan – China. https://orcid.org/0009-0003-8820-0452
  • Zhumu Fu Henan University of Science and Technology – College Information Engineering – Luoyang – Henan – China | Henan University of Science and Technology – Henan Key Laboratory of Robot and Intelligent Systems – Luoyang – Henan – China. https://orcid.org/0000-0002-2573-3062
  • Song Gao Henan University of Science and Technology – College Information Engineering – Luoyang – Henan – China. https://orcid.org/0000-0003-2643-3165

Keywords:

Terminal guidance, Targets, Angle of attack, Missile control

Abstract

In this paper, the robust !nite-time control for impact angle guidance of missile dynamic system with uncertainties is investigated by combining linear extended state observer (LESO) and adaptive non-singular fast terminal sliding mode method. Specially for dealing with existing uncertainties including time-varying parametric perturbation and nonparametric disturbances in high order line-of-sight rates and target acceleration, a robust LESO strategy is proposed for designing sliding mode-based impact angle guidance, which can guarantee that estimation error converges to the neighborhood of the origin in finite-time. Based on the proposed LESO framework, an adaptive non-singular fast terminal sliding mode guidance law is considered for realizing interception of maneuvering targets, which can guarantee asymptotically stability of the system. Simulation results are shown for confirming effectiveness of the proposed guidance strategy of this paper. Compared with former methods, accuracy of estimation is increased by nearly two times, and miss distance is reduced by nearly two times.


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Published

2024-02-19

Issue

Vol. 16 (2024)

Section

Original Papers

License

Copyright (c) 2024 Fazhan Tao, Jingtian Shi, Jie Zhang, Zhumu Fu, Song Gao

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

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