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Journal of Projectiles, Rockets, Missiles and Guidance >

2024 , Vol. 44 >Issue 1: 13 - 19

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2024.01.003

Angle Constrained Guidance Law with Fixed Time Convergence Based on Partial States Feedback and Fixed Time Stability

  • XU Chen 1 ,
  • NIU Zhiqi 1 ,
  • LUO Sheng 1 ,
  • DU Fenghuai 1 ,
  • HAN Di 1 ,
  • WANG Yang 2
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  • 1 Xi’an Modern Control Technology Research Institute,Xi’an 710065,Shaanxi,China
  • 2 School of Computer Science, Xijing University,Xi’an 710123,Shaanxi,China

Received date: 2023-09-01

  Online published: 2024-12-28

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Abstract

For the terminal angle constraint guidance problem, a fixed-time angle constraint guidance law based on partial states feedback was developed. Firstly, based on the uniform robust exact differentiator algorithm, a fixed time state observer was developed to estimate the unmeasured system state. Then, based on fixed-time stability, an integral sliding-mode surface was developed, and a fixed-time guidance law was developed to guarantee the fixed-time convergences of sliding-mode surface and guidance error. Compared with the conventional finite-time guidance law, the proposed guidance law not only can guarantee that the upper bound of convergence time is bounded by the constant which is not relate to the initial system states but also only need partial states to feedback to simplify the guidance system. Finally, the simulation results illustrate that the proposed guidance law can achieve the fixed-time stability by using the partial states to feedback.

Key words： sliding mode guidance law; fixed-time convergence; partial states feedback; integral sliding-mode surface

Cite this article

XU Chen , NIU Zhiqi , LUO Sheng , DU Fenghuai , HAN Di , WANG Yang . Angle Constrained Guidance Law with Fixed Time Convergence Based on Partial States Feedback and Fixed Time Stability[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2024 , 44(1) : 13 -19 . DOI: 10.15892/j.cnki.djzdxb.2024.01.003

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