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Abstract: High-precision detection in fundamental space physics, such as space gravitational wave detection, high-precision earth gravity field measurement, and reference frame drag effect measurement, is the key to achieving important breakthroughs in the scientific study of fundamental space physics. Acquiring high-precision measurements requires high-performance satellite platforms to achieve “drag-free control” in a near “pure gravity” flight environment. The critical technology for drag-free control is variable thrust control at the micro-Newton scale. thrust noise is the most important technical indicator for achieving drag-free flight. However, there is no literature about the current status and future prospects of variable thrust control based on thrust noise. Therefore, the micro-Newton variable thrust control technology and the thrust noise of the drag-free satellite platform are reviewed in this work. Firstly, the research status of micro-Newton scale variable thrust control technology and its applications to drag-free satellite platforms are introduced. Then, the noise problem is analyzed in detail and its solution is theoretically investigated in three aspects: “cross-basin flow problem,” “control problem,” and “system instability and multiple-coupled problem.” Finally, a systematic overview is presented and the corresponding suggested directions of research are discussed. This work provides detailed understanding and support for realizing low-noise variable thrust control in the next generation of drag-free satellites.

微牛级变推力控制技术和无拖曳卫星平台的噪声问题：综述

作者：徐昌一¹，李文娅¹，刘旭辉²，李永²，张超³
机构：¹大连理工大学，控制科学与工程学院，中国大连，116024；²北京控制工程研究所，中国北京，100190；³浙江大学，机械工程学院流体动力与机电系统国家重点实验室，中国杭州，310058
概要：实现空间引力波探测、地球重力场高精度测量、参照系阻力效应测量等基础空间物理量的高精度测量，需要高性能卫星平台在接近"纯重力"的飞行环境中实现"无拖曳控制"。无拖曳控制的关键技术是微牛顿尺度下的变推力控制。推力噪声是实现无阻力飞行最重要的技术指标。因为推力噪声的形成机理和影响规律的物理因素，噪声抑制技术的发展受到限制。针对推力噪声的主要挑战，本文对微牛顿变推力控制技术和无拖曳卫星平台的推力噪声问题进行了系统的综述，并对今后的研究方向进行了讨论。该工作为实现下一代无阻卫星的低噪声变推力控制提供了详细的理解和支持。

关键词：空间物理探测；卫星平台；无拖曳控制；微牛级变推力技术；推力噪声

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