Fixed-time Integrated Guidance and Control for Impact Angle Constrained Interception with Multiple Uncertainties

HU Chengwei; WEI You; WANG Xueping

doi:10.15892/j.cnki.djzdxb.2023.04.015

Journal of Projectiles, Rockets, Missiles and Guidance >

2023 , Vol. 43 >Issue 4: 98 - 104

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2023.04.015

Fixed-time Integrated Guidance and Control for Impact Angle Constrained Interception with Multiple Uncertainties

HU Chengwei ,
WEI You ,
WANG Xueping

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Xi'an Mordern Control Technology Research Institute, Xi'an 710065, Shaanxi, China

Received date: 2022-08-18

Online published: 2025-02-07

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Abstract

This paper considers the integrated guidance and control (IGC) problem for maneuvering target interception with impact angle constraint and uncertain aerodynamics. The target’s acceleration and uncertain aerodynamics are considered as bounded external disturbances. By combining the typical backstepping idea with dynamic surface control (DSC) technique, a fixed-time sliding mode control approach is presented to address the IGC law design problem and the inherent problem of “explosion of complexity” in typical backstepping design is efficiently avoided by introducing a fixed-time differentiator. Furthermore, fixed-time stability theory is presented to carry out the stability analysis showing that with the proposed control scheme all signals in the sliding mode system can achieve semi-globally fixed-timely uniformly ultimately bounded stabilization independent of initial conditions. Finally, the superiority of the proposed IGC law is demonstrated by simulation results.

Key words： integrated guidance and control; impact angle constraint; maneuvering target interception; fixed-time stability; aerodynamic uncertainties

Cite this article

HU Chengwei , WEI You , WANG Xueping . Fixed-time Integrated Guidance and Control for Impact Angle Constrained Interception with Multiple Uncertainties[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2023 , 43(4) : 98 -104 . DOI: 10.15892/j.cnki.djzdxb.2023.04.015

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