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大长径比远程制导火箭弹自适应Super-twisting控制方法

Adaptive Super-twisting control method for long-range guided missiles with high length-to-diameter ratios

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针对具有轻质薄壳结构的大长径比远程制导火箭弹刚体-弹性体耦合动力学控制难题,提出了一种自适应Super-twisting控制方法.首先,将大长径比远程制导火箭弹的弹性模态与外部干扰项视为归一化扰动,建立了考虑参数、模型不确定性的刚体-弹性体耦合动力学模型.针对外部扰动难以实时精准获取的问题,设计了有限时间收敛干扰观测器,能够在大范围气动参数摄动情形下对远程制导火箭弹外部扰动进行实时精准估计.为提高系统鲁棒性,设计了基于Super-twisting算法的自适应有限时间控制方法,使系统能根据状态误差自动调节控制参数,在削弱高频抖振的同时有效提高抗干扰能力.仿真结果表明:所提控制方法在弹体±15%气动参数摄动的条件下,由平飞状态转变为跟踪幅值为 10的正弦弹道倾角指令时,实现 3.2 s 内弹道倾角跟踪误差收敛至 0.002 °,可实现远程制导火箭弹姿态平稳跟踪控制弹道倾角指令.
A self-adaptive Super-twisting control method is proposed to address the challenging problem of rigid body-elastic body coupled dynamics control for long-range guided missiles with lightweight thin-shell structures.Firstly,the elastic modes of the long-range guided missile and external disturbances are treated as normalized disturbances,and a coupled rigid body-elastic body dynamic model is established,considering parameter and model uncertainties.To address the issue of real-time and accurate estimation of external disturbances,a finite-time convergent disturbance observer is designed,capable of providing real-time accurate estimation of external disturbances even under significant aerodynamic parameter perturbations.To enhance system robustness,a self-adaptive finite-time control method based on the Super-twisting algorithm is designed,enabling the system to automatically adjust control parameters based on state errors,effectively reducing high-frequency oscillations while improving disturbance rejection capabilities.Simulation results demonstrate that the proposed control method achieves a convergence of the trajectory angle tracking error to 0.002 ° within 3.2 s when transitioning from level flight to tracking the trajectory angle command with an amplitude of 10,under conditions of±15%aerodynamic parameter perturbations.The proposed method enable smooth tracking of the desired trajectory angle command for remote-guided missiles.

long-range guided rocketelastic effectadaptive Super-twisting algorithmfinite-time convergencedisturbance observer

范军芳、闫华杰、纪毅、唐文桃、赵国宁

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北京信息科技大学 自动化学院,北京 100192

高动态导航技术北京市重点实验室,北京 100192

北京自动控制研究所,北京 100074

远程制导火箭弹 弹性效应 自适应Super-twisting 有限时间收敛 扰动观测器

国家重点研发计划国家自然科学基金北京市属高等学校高水平科研创新团队建设支持计划北京市科协青年人才托举工程

2020YFC151170552272358BPHR20220123BYESS2023310

2024

10.13695/j.cnki.12-1222/o3.2024.02.012

中国惯性技术学报
中国惯性技术学会

中国惯性技术学报

CSTPCD北大核心
影响因子：0.792
ISSN：1005-6734
年,卷(期)：2024.32(2)
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