航天器环境工程2018，Vol.35Issue(3)：223-227,5.DOI:10.3969/j.issn.1673-1379.2018.03.004
基于Hilbert-Huang变换的航天器发射段力学环境分析
Analysis of spacecraft mechanical environment during lift-off based on Hilbert-Huang transform
摘要
Abstract
The paper, based on Hilbert-Huang transform (HHT) method, analyzes the dynamic environmental data recorded during the fairing separation process of fairing. The Hilbert spectrum in the time and frequency domain is acquired from a group of self-adapted primary functions. Meanwhile, the main frequency and the corresponding time range of the diachronic vibration signals are accurately identified. The example of using HHT to deal with the flight data can serve as a reference for the establishment of ground spacecraft mechanical test conditions and the examination of the interface conditions for the launch vehicle.关键词
航天器/力学环境分析/信号识别/Hilbert-Huang变换/Hilbert谱Key words
spacecrafts/dynamic environment/signal identification/Hilbert-Huang transform/Hilbert spectrum分类
航空航天引用本文复制引用
武江凯,白明生..基于Hilbert-Huang变换的航天器发射段力学环境分析[J].航天器环境工程,2018,35(3):223-227,5.基金项目
国家重大科技专项工程 （）
