基于并行分层方案的大型航天器轨道-姿态-振动综合动力学与控制。

IF 6.3 2区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS
Bailiang Lyu , Xiaokui Yue , Chuang Liu
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引用次数: 0

摘要

针对具有强时变耦合特性的轨道-姿态-振动动力学问题,研究了一种大型航天器模型-控制集成方案。该方案旨在同时实现轨道保持、姿态稳定和振动抑制的协同建模与控制。与现有文献中常用的约简解耦方法相比,采用绝对节点坐标法和拉格朗日力学建立了一个集成的动力学模型,保留了时变耦合项,增强了模型的完整性。针对轨道自由度、姿态自由度和振动自由度之间的时变耦合效应,提出了一种并行分层方案,实现了建模与控制的联合集成设计,避免了复杂的动态计算,提高了控制精度。该方案直接适用于非简化时变耦合动态模型。具体而言,在该并行分层方案中,振动控制由于其相对独立性,通过等效动态转换将其与轨道-姿态动力学分离。为此,设计了一种基于扰动观测器的末端滑模控制器,通过主动反馈机制自动抑制振动,实现轨道和姿态的稳定。最后,通过大型航天器系统的数值仿真,验证了该方法的有效性和性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Parallel layered scheme-based integrated orbit-attitude-vibration coupled dynamics and control for large-scale spacecraft
This paper investigates an integrated model-control scheme for large-scale spacecraft, focusing on orbit-attitude-vibration dynamics subject to strong time-varying coupling characteristics. The proposed scheme aims to achieve cooperative modeling and control for orbit maintenance, attitude stabilization and vibration suppression simultaneously. An integrated dynamic model is established using the Absolute Nodal Coordinate Formulation and Lagrangian mechanics, where time-varying coupling terms are preserved to enhance model integrity, contrasting with the reduction and decoupling methods commonly adopted in existing literature. To address the time-varying coupling effect among the orbit, attitude, and vibration degrees of freedom, a parallel layered scheme is proposed to enable joint integrated modeling-control design while avoiding complex dynamic calculations and enhancing control precision. The scheme is directly applicable to the un-simplified time-varying coupling dynamic model. Specifically, within this parallel layered scheme, vibration control, owing to its relative independence, is separated from orbit-attitude dynamics through equivalent dynamic conversion. Consequently, a disturbance observer-based terminal sliding mode controller is developed to stabilize the orbit and attitude with vibration suppression achieved automatically via active feedback mechanism. Finally, numerical simulations of large-scale spacecraft system are conducted to demonstrate the effectiveness and performance of the proposed approach.
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来源期刊
ISA transactions
ISA transactions 工程技术-工程:综合
CiteScore
11.70
自引率
12.30%
发文量
824
审稿时长
4.4 months
期刊介绍: ISA Transactions serves as a platform for showcasing advancements in measurement and automation, catering to both industrial practitioners and applied researchers. It covers a wide array of topics within measurement, including sensors, signal processing, data analysis, and fault detection, supported by techniques such as artificial intelligence and communication systems. Automation topics encompass control strategies, modelling, system reliability, and maintenance, alongside optimization and human-machine interaction. The journal targets research and development professionals in control systems, process instrumentation, and automation from academia and industry.
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