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Journal of Projectiles, Rockets, Missiles and Guidance >

2014 , Vol. 34 >Issue 6: 1 - 4

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2014.06.001

MISSILES AND GUIDANCE TECHNOLOGY

Design of a Variable Structure Guidance Law with Finite-time Convergence Based on Local Stability

  • LI Lei ,
  • SONG Shuzhong ,
  • XU Xingyuan ,
  • MA Jianwei ,
  • ZHANG Sen
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  • Scool of Information Engineering, Henan University of Science and Technology, Henan Luoyang 471023, China

Received date: 2014-01-03

  Online published: 2025-05-30

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Abstract

In view of terminal guidance of interceptor, because of complex design of global convergence and large amount of calculation and so on, it could be an easier way to design the guidance law by using the local stability theory. First, the intercepting time of the missile was estimated by the finite-time stability theory. Then, the system variables were analyzed and the main variables were selected to constitute subsystems for proving their stability, and deducing global stability by local stability. This guidance law could guarantee line-of-sight rate to converge to zero in a finite-time, and its mathematical model is simple and easy to implement in engineering. The results show that, when the target is making high-speed maneuvering to escape, the guidance law still has a better effect in intercepting.

Key words： guidance law; terminal guidance; partial stability; finite-time convergence; line-of-sight rate

Cite this article

LI Lei , SONG Shuzhong , XU Xingyuan , MA Jianwei , ZHANG Sen . Design of a Variable Structure Guidance Law with Finite-time Convergence Based on Local Stability[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2014 , 34(6) : 1 -4 . DOI: 10.15892/j.cnki.djzdxb.2014.06.001

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