A Control Method for Roll Stabilization of Guided Missile with Large Angle of Attack

doi:10.12382/bgxb.2022.0853

Abstract

Abstract:

Eddy current asymmetry and transonic aerodynamic transition usually occure at a large angle-of-attack during the cross-domain flight process of guided missile, which may cause control instability and further increase miss distance. To solve the problems above, a missile roll channel dyanamics model is established, in which the strong nonlinearity of aerodynamic model, strong parameter uncertainty and strong external disturbance, and then an “observer+controller” composite control framework is proposed. This roll stabilization control framework contains a novel sliding mode disturbance observer and nonsingular terminal sliding mode. Based on this framework, a backstepping controller is proposed to compensate actuator dynamics. The stability and finite-time convergence properties of closed-loop system are verified through Lyapunov theory. Finally,the numerically simulated results demonstrate the superiority and universality of the proposed control method.

Key words: guided missile, roll stabilization control, sliding mode observer, nonsingular terminal sliding mode, actuator dynamics, backstepping control

CLC Number:

V249.1

WANG Yuchen, WANG Wei, LI Ning, ZHU Zejun, SHI Zhongjiao. A Control Method for Roll Stabilization of Guided Missile with Large Angle of Attack[J]. Acta Armamentarii, 2024, 45(3): 774-788.

Figures/Tables 11

Fig.1 Trajectories of missile

Fig.2 Variation curves of aerodynamics parameters

Fig.3 Step response curves of system (3)

Fig.4 Step response curve of system (4)

Table 1 Values of parameters

参数	c_1d	c_2d	α_1d	α_2d	η_d	k_d	r₁	r₂	r₃	r₄	ρ	ω_a	ζ_a	k₂₁	k₂₂	k₃₁	k₃₂
取值	2	2	0.5	3	0.1	400	15	0.2	100	10	0.3	5	200	5	100	5	100

Fig.5 Simulated results of controller with considering ideal actuator dynamics

Fig.6 Roll stabilization control method without considering actuator dynamics

Fig.7 Simulated results of controller with considering second-order actuator dynamics

Fig.8 Tracking effect of the proposed backstepping controller

Fig.9 Simulated results under different BTT control strategies

Fig.10 Comparison results of two controllers

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