航天器工程2026，Vol.35Issue(1)：98-106,9.DOI:10.3969/j.issn.1673-8748.2026.01.013
航天器泵驱单相流体回路在轨数据分析及预测
On-orbit Data Analysis and Prediction of Spacecraft Pump-driven Single-phase Fluid Loops
郭嘉 1郑红阳 1王德伟 1车邦祥 1徐侃 1曹剑峰1
作者信息
- 1. 北京空间飞行器总体设计部 航天器热控全国重点实验室,北京 100094
- 折叠
摘要
Abstract
To address the problem that data directly acquired from single-phase fluid loops in spacecraft thermal control systems contain substantial white noise and exhibit severe fluctua-tions,which makes it difficult to directly extract effective information,a three-stage on-orbit data processing method based on Hurst-exponent-driven time-series decomposition,filtering and pre-diction is proposed in this paper.Hurst exponents are used to quantify the characteristics of the data.Time-series decomposition is the performed to separate the trend,periodic,and residual components.Fourier transform-based filtering is applied to attenuate white noise and discrete ab-rupt variations.An adjustable fractional-order integration model is then constructed fpr future trend prediction.Analysis of on-orbit data indicates that spacecraft thermal control data exhibits periodic fluctuations due to temperature variation cycles induced by orbital motion.The pump ro-tational speed demonstrates strong mean-reverting characteristics,while the liquid level shows a linear leakage trend,with an annual leakage rate of approximately 0.6mm.In addition,a high-confidence linear relationship is observed between pressure and liquid level.This method provides support for the safe on-orbit operation of spacecraft thermal control systems.关键词
航天器/在轨数据/泵驱单相流体回路/时间序列分析/傅里叶变换Key words
spacecraft/on-orbit data/pump-driven single-phase fluid loop/time series analysis/Fourier transform分类
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郭嘉,郑红阳,王德伟,车邦祥,徐侃,曹剑峰..航天器泵驱单相流体回路在轨数据分析及预测[J].航天器工程,2026,35(1):98-106,9.
