摘要
降低航天器平台各分系统的功率需求是提高航天器承载能力的重要手段之一。部分航天器的热控功率占比偏高,而消耗功率的主要电加热器因控制算法简单,在轨功耗呈现明显的波峰波谷。文章提出了一种旨在优化电加热器总功率的电加热智能控制策略,并根据某导航卫星热设计和在轨遥测数据,选取蓄电池和推力器的加热器为代表进行了仿真分析,结果表明:智能控制策略具有良好的收敛性,蓄电池和推力器的加热器功率需求分别下降50%和45%,可以推广应用到其他航天器。
Reducing the power cost of platform subsystems is one of the most important ways to improve the carrying capacity of a spacecraft.The power of thermal control subsystem is higher compared to other platform subsystems.Electric heaters cost most of the power and wave distinctly because of the simple control way.This paper brings forward an intelligent control strategy aiming at optimizing the power costs of electric heaters,and simulates the heaters power costs of batteries and engines in view of the thermal subsystem design and on-orbit data of some navigation satellite.The results realize that this strategy converges stably,and the power costs of batteries and engines descend by 50 percent and 45 percent respectively,which can be popularized to other spacecraft.
出处
《航天器工程》
北大核心
2016年第4期48-53,共6页
Spacecraft Engineering
基金
国家重大航天工程
关键词
航天器
控制策略
电加热器
功耗
优化
spacecraft
control strategy
electric heaters
power cost
optimization
