摘要
某航天器在轨运行面临外热流的频繁波动和载荷热耗的时变性扰动,热控分系统需要利用流体回路的自适应调节能力,维持被控对象在稳定的温度范围内。首先通过Sinda/Fluint模型对流体回路的动态特性进行了分析,验证了集总参数法的可行性,为Matlab的建模提供了依据,并对Sinda/Fluint模型的PI控温算法进行了初步探索,阐述了Matlab深入细化建模的必要性。最后基于理论分析,对流体回路系统的传热和流动过程进行了分析和简化,搭建了Matlab的动态特性仿真平台。结果表明,模型和算法满足系统控温需求。
The thermal control system on orbit faces disturbances such as the external heat flux fluctuating frequently,the heat load varying at times.So,it is necessary that the fluid loop system can adjust itself adaptively to maintain the stability of the temperature of the controlled object.The research result shows that the Sinda/Fluint model proved the viability of Lumped Parameter Method. It provided the theoretical basis of Matlab modeling.The PI thermal control algorithm of Sinda/Fluint model was studied preliminarily.It provided the necessity of Matlab deep modeling.Based on the theoretical analysis,the related heat transfer and flow process in the fluid loop system were analyzed and simplified.Matlab dynamic models of system components and the simulation platform for dynamic characteristics were established.The results show that the model and algorithm satisfied the system's rhermal control requirements.
作者
施哲栋
顾燕萍
陈钢
王江
曹建光
SHI Zhe-dong;GU Yan-ping;CHEN Gang;WANG Jiang;CAO Jian-guang(Shanghai Institute of Satellite Engineering,Shanghai 201109,China)
出处
《热科学与技术》
CAS
CSCD
北大核心
2018年第6期489-496,共8页
Journal of Thermal Science and Technology
基金
863重大专项课题资助项目(2016AA8073034)
战略性先进电子材料专项资助项目(2017YFB0406100)
关键词
流体回路
动态特性
PI控制
控温
fluid loop
dynamic performance
PI control
thermal control
作者简介
施哲栋(第一作者),男,1993年生。江苏启东人,硕士,工程师,主要研究方向为航天器热控技术.E-mail:17717374862@163.com;王江(通信作者),男,1978年生,湖北麻城人,博士,研究员,主要研究方向为航天器热控技术.E-mail:fcwjseu@126.com
