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Journal of Projectiles, Rockets, Missiles and Guidance >

2024 , Vol. 44 >Issue 1: 34 - 40

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2024.01.006

Stability Study on the New Overload Autopilot of Rolling Missile Guidance System

  • LI Tao 1 ,
  • FU Bo 1 ,
  • WANG Qishuang 1 ,
  • DUAN Chenlu 1 ,
  • LIN Shiyao 2
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  • 1 Xi’an Modern Control Technology Research Institute,Xi’an 710065,Shaanxi,China
  • 2 Ordnance Science and Research Academy of China,Beijing 100089,China

Received date: 2023-03-06

  Online published: 2024-12-28

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Abstract

To solve the problem of disturbance rejection rate parasitic loop (DRRPL) in the platform image seeker, the coning motion stability of rolling missile is studied based on a new overload autopilot. First, the linear dynamic model of rolling missile is deduced and simplified. And then, based on a new three-loop autopilot with an acceleration feedback augmentation loop as the inner loop, the rolling missile guidance system model considering the DRRPL of image seeker is constructed, and the dynamic stability conditions of the proportional navigation/new overload autopilot guidance system with DRRPL are deduced. Besides, the effects of DRRPL, rotational speed and total delay angle of steering gear on the dynamic stability region of rolling missile are analyzed. Simulations are carried out to demonstrate that roll effect, parasitic effect and control instruction delay are the main factors leading to the decrease of stability region of autopilot parameter. In addition, the design parameters of the guidance system should be far away from the stability boundary to improve the stability of coning motion.

Key words： platform imaging seeker; disturbance rejection rate parasitic loop; overload autopilot; coning motion stability

Cite this article

LI Tao , FU Bo , WANG Qishuang , DUAN Chenlu , LIN Shiyao . Stability Study on the New Overload Autopilot of Rolling Missile Guidance System[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2024 , 44(1) : 34 -40 . DOI: 10.15892/j.cnki.djzdxb.2024.01.006

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