空间泵驱单相流体回路半物理仿真技术研究  

Research on hardware-in-the-loop simulation technology for space pumped single-phase fluid loop

作　　者：刘东晓[1] 宁献文[1] LIU Dongxiao;NING Xianwen(Beijing Institute of Spacecraft System Engineering,Beijing Key Laboratory of Space Thermal Control Technology,Beijing100094,China)

机构地区：[1]北京空间飞行器总体设计部空间热控技术北京市重点实验室,北京100094

出　　处：《航天器环境工程》2024年第4期414-420,共7页Spacecraft Environment Engineering

基　　金：国家自然科学基金项目(编号:11472040)。

摘　　要：鉴于空间泵驱单相流体回路控制系统研制过程中全物理试验验证涉及的高成本、高风险,以及大气环境下等效模拟空间辐射散热行为存在的挑战,提出一种基于CAN总线的半物理仿真试验平台架构。通过空间热模型代替部分物理实物,结合单相流体回路辐射器地面常压等效验证方法,实现空间泵驱单相流体回路控制系统动态特性的在线快速、可信验证。试验结果表明:在3种工况下,系统控温精度普遍可以达到±0.5℃;常规PID控制策略与神经元PID控制策略的控温性能差别不大;短期瞬态高热流冲击对主回路控温点温度的影响不超过1℃。研究可为空间泵驱单相流体回路控制系统开发与验证提供一种新的技术途径。In view of the high cost and high risks in conducting full-scale physical experimental validation for space pumped single-phase fluid loop,as well as the challendges in the equivalent simulation of space radiation and heat dissipation behavior in atmospheric environment,a hardware-in-the-loop simulation(HILS)test platform architecture based on CAN bus was proposed.By utilizing a space thermal model to replace some physical entities and integrating ground-based method for equivalent validation of single-phase fluid loop radiator in ambient pressure,the rapid and reliable online validation of the dynamic characteristics of the control system for the space pumped single-phase fluid loop was achieved.The results show that the temperature control accuracy of the system can generally reach±0.5℃under three working conditions.There is little difference in the temperature control performance between conventional PID and neuron PID.The impact of short-term transient high heat flux on the temperature of the control point of main circuit does not exceed 1℃.The proposed research may provide a new technical approach for the development and validation of space pumped single-phase fluid loop control systems.

关 键 词：单相流体回路 辐射器 散热 热模型 半物理仿真 

分 类 号：V19[航空宇航科学与技术—人机与环境工程]