输出约束条件下基于 PDE 的柔性卫星姿态和振动抗扰控制

IF 2.8 3区 工程技术 Q2 MECHANICS International Journal of Non-Linear Mechanics Pub Date : 2024-09-28 DOI:10.1016/j.ijnonlinmec.2024.104914
Qijia Yao , Hadi Jahanshahi
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引用次数: 0

摘要

本文提出了一种抗干扰控制策略,用于柔性卫星在干扰和输出约束条件下的姿态调整和减振。柔性卫星由偏微分方程(PDE)构成,所利用的控制器从以下两个方面扩展了现有成果。(1) 通过李亚普诺夫分析,利用基于耦合项的障碍李亚普诺夫函数(BLF),所利用的控制器能够处理时变输出约束。(2) 通过引入两个扰动观测器来分别识别扰动扭矩和力,所开发的控制器具有出色的扰动抑制特性。对闭环系统的渐近稳定性进行了严格评估。所利用的控制器能够始终在预定输出约束条件下抑制姿态调整误差和尖端变形。最后,对比模拟验证并强调了主要结果。
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PDE-based anti-disturbance attitude and vibration control of flexible satellite under output constraints
In this paper, an anti-disturbance control strategy is exploited for the attitude reorientation and vibration damping of flexible satellite under disturbances and output constraints. The flexible satellite is formulated by partial differential equations (PDEs) and the exploited controller extends the existing results from the following two aspects. (1) The exploited controller is capable of handling the time-varying output constraints by incorporating the barrier Lyapunov function (BLF) with a coupling-based item through Lyapunov analysis. (2) The exploited controller possesses the excellent disturbance rejection property by introducing two disturbance observers to separately identify the disturbance torque and force. The asymptotic stability of the closed-loop system is strictly evaluated. The exploited controller can restrain the attitude reorientation error and the tip deformation always in the predefined output constraints. Lastly, comparative simulations validate and highlight the main results.
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来源期刊
CiteScore
5.50
自引率
9.40%
发文量
192
审稿时长
67 days
期刊介绍: The International Journal of Non-Linear Mechanics provides a specific medium for dissemination of high-quality research results in the various areas of theoretical, applied, and experimental mechanics of solids, fluids, structures, and systems where the phenomena are inherently non-linear. The journal brings together original results in non-linear problems in elasticity, plasticity, dynamics, vibrations, wave-propagation, rheology, fluid-structure interaction systems, stability, biomechanics, micro- and nano-structures, materials, metamaterials, and in other diverse areas. Papers may be analytical, computational or experimental in nature. Treatments of non-linear differential equations wherein solutions and properties of solutions are emphasized but physical aspects are not adequately relevant, will not be considered for possible publication. Both deterministic and stochastic approaches are fostered. Contributions pertaining to both established and emerging fields are encouraged.
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