Guidance Law with Impact Angle Constraint Based on Continuous Second-order Sliding Mode

doi:10.3969/j.issn.1000-1093.2018.12.013

Abstract

Abstract: A new guidance law is designed by combining a sliding mode disturbance observer with a novel continuous second-order sliding mode, in which maneuvering target can be intercepted with demanded impact angle. A sliding mode disturbance observer based on the super-twisting algorithm is designed to estimate an unknown target acceleration. Unlike traditional boundary layer control technique, the proposed method avoids the chattering problem while meeting the control precision. The stability of closed-loop guidance system within a finite time is demonstrated based on Lyapunov stability criterion. Theoretical analysis and numerical simulation show that the proposed method can be used to intercept a maneuvering target, and a wide range of impact angle constraint is achieved. Key

Key words: missileterminalguidance, slidingmodedisturbanceobserver, continuoussecond-orderslidingmode, chatteringproblem, Lyapunuovstabilitycriterion

CLC Number:

TJ765.3⁺1

ZHANG Wen-guang, YI Wen-jun, GUAN Jun, YUAN Dan-dan. Guidance Law with Impact Angle Constraint Based on Continuous Second-order Sliding Mode[J]. Acta Armamentarii, 2018, 39(12): 2389-2398.

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第39卷第12期
2018 年12月兵工学报ACTA
ARMAMENTARIIVol.39No.12Dec. 2018