Multiplexed model predictive attitude control for nadir-pointing satellite using only magnetorquers

IF 5.4 2区计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS

Control Engineering Practice Pub Date : 2025-05-06 DOI:10.1016/j.conengprac.2025.106381

Sen Yang , Keck Voon Ling , Zhenhua Wang , Huiping Li

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引用次数: 0

Abstract

Due to the low failure risk of magnetorquers, the control strategy based on magnetic actuators can significantly enhance the reliability of the satellite attitude control system. In light of this advantage, this paper conducts research on model predictive control (MPC) algorithm for nadir-pointing satellites equipped only with magnetorquers. Firstly, to facilitate controller design, the linear time-varying (LTV) model for nadir-pointing satellites is derived by linearizing the nonlinear equations around the operating point. Then, leveraging this linearized representation, an LTV multiplexed MPC (MMPC) method with exponential weighting is proposed. The MMPC scheme allows for faster sampling rates and quicker responses to disturbances, thereby enhancing the overall performance of the satellite attitude control system while retaining the benefits of MPC. Finally, compared with a state-of-the-art SMPC method, the proposed method is particularly advantageous in situations where computational resources are limited, specifically for satellites that rely only on onboard computing capabilities.

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仅磁致力矩器的多路模型预测最低点卫星姿态控制

由于磁力矩器具有较低的失效风险，基于磁致动器的控制策略可以显著提高卫星姿态控制系统的可靠性。鉴于这一优势，本文对仅配备磁致力矩器的最低点卫星的模型预测控制算法进行了研究。首先，为了便于控制器设计，通过对工作点周围的非线性方程进行线性化，推导了最低点卫星的线性时变模型；然后，利用这种线性化表示，提出了一种指数加权的LTV复用MPC （MMPC）方法。MMPC方案允许更快的采样率和对干扰的更快响应，从而在保留MPC优点的同时增强卫星姿态控制系统的整体性能。最后，与最先进的SMPC方法相比，所提出的方法在计算资源有限的情况下特别有利，特别是对于仅依赖机载计算能力的卫星。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Control Engineering Practice 工程技术-工程：电子与电气

CiteScore

9.20

自引率

12.20%

发文量

183

审稿时长

44 days

期刊介绍： Control Engineering Practice strives to meet the needs of industrial practitioners and industrially related academics and researchers. It publishes papers which illustrate the direct application of control theory and its supporting tools in all possible areas of automation. As a result, the journal only contains papers which can be considered to have made significant contributions to the application of advanced control techniques. It is normally expected that practical results should be included, but where simulation only studies are available, it is necessary to demonstrate that the simulation model is representative of a genuine application. Strictly theoretical papers will find a more appropriate home in Control Engineering Practice''s sister publication, Automatica. It is also expected that papers are innovative with respect to the state of the art and are sufficiently detailed for a reader to be able to duplicate the main results of the paper (supplementary material, including datasets, tables, code and any relevant interactive material can be made available and downloaded from the website). The benefits of the presented methods must be made very clear and the new techniques must be compared and contrasted with results obtained using existing methods. Moreover, a thorough analysis of failures that may happen in the design process and implementation can also be part of the paper. The scope of Control Engineering Practice matches the activities of IFAC. Papers demonstrating the contribution of automation and control in improving the performance, quality, productivity, sustainability, resource and energy efficiency, and the manageability of systems and processes for the benefit of mankind and are relevant to industrial practitioners are most welcome.