摘要
针对多颗地球静止轨道(GEO)卫星氢镍蓄电池组压力数据在轨正向漂移的现象,文章分析了测量方式及温度对压力遥测的影响,提出基于小波分析和平稳时间序列分析的数据趋势项提取方法,并在数据趋势项的基础上建立压力遥测的修正模型。以该模型为依据,预测下一个地影季充电压力终止点。研究结果:可以在地影季到来前,及时调整氢镍蓄电池组在轨充电终止阈值和报警阈值,防止过充电,确保蓄电池组在轨管理的准确性和安全性,并有效提高蓄电池组寿命。
For the charge finishing pressure of nickel-hydrogen battery transferring to positive of on-orbit GEO satellites,this paper analyses the effects of measurement and temperature on telemetered presure data,then put forwards data trend extraction method based on wavelet analysis and stationary time series analysis,and builds a modified model according to the date trend extraction method.The charge finishing pressure telemetry data is predicted with the model.The conclusion is that modulating the charge finishing and alarming threshold can be adjusted before shadow to prevent over charging,which can ensure the accuracy and safety of the satellites on-orbit management,improving the life of the battery effectively.
出处
《航天器工程》
北大核心
2016年第3期69-73,共5页
Spacecraft Engineering
基金
国家自然科学基金(51407008)