Systems Engineering and Electronics ›› 2021, Vol. 43 ›› Issue (11): 3321-3329.doi: 10.12305/j.issn.1001-506X.2021.11.33

• Guidance, Navigation and Control • Previous Articles     Next Articles

Analysis of capture region based on sliding mode variable structure guidance law

Wanli LI1,2,*, Jiong LI1, Humin LEI1, Changxin LUO2, Shijie LI2   

  1. 1. Air and Missile Defense College, Air Force Engineering University, Xi'an 710051, China
    2. Research College, Air Force Engineering University, Xi'an 710051, China
  • Received:2020-10-21 Online:2021-11-01 Published:2021-11-12
  • Contact: Wanli LI

Abstract:

Aiming at the condition setting problem of interceptor's mid-terminal guidance succession, the capture region with sliding mode variable structure guidance law as terminal guidance law is analyzed. Firstly, the relative motion model of missile in terminal guidance section is established based on the background of near space combat. Secondly, based on the sliding mode variable structure control theory, a sliding mode variable structure guidance law which can ensure the interception terminal overload convergent and has good performance is designed as the terminal guidance law, and its stability is analyzed. Thirdly, the condition of zero control interception is analyzed, and the capture region of sliding mode variable structure guidance law is deduced, analyzed and proved theoretically, and the boundary of the capture region is obtained. Finally, simulation experiments under four scenarios are designed to verify the correctness region analysis in the paper.

Key words: capture region, sliding mode variable structure, zero control interception, terminal guidance law

CLC Number: 

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