基于虚拟仪器的航天器外热流系统设计  

Design of External Heat Flux System for Spacecraft Based on Virtual Instrument

作　　者：汪新舜 吴星云 沈辉 侍尉 陈延龙 WANG Xinshun;WU Xingyun;SHEN Hui;SHI Wei;CHEN Yanlong(Shanghai Institute of Spacecraft Equipment,Shanghai 200240,China;Shanghai Yu Da Industrial Co.,Ltd.,Shanghai 200240,China)

机构地区：[1]上海卫星装备研究所,上海200240 [2]上海裕达实业有限公司,上海200240

出　　处：《计算机测量与控制》2022年第7期166-172,180,共8页Computer Measurement &Control

摘　　要：传统的航天器外热流测控系统处理大数据能力差,缺乏自整定PID控制策略和故障定位处理机制,控制周期过长,控制精度差及程序维护性差等;为了解决上述问题,开发了一种基于虚拟仪器的航天器真空热试验外热流系统,使用了多线程低耦合的软件队列处理框架,采用了自顶向下逐步细化的整体分层设计,将各个功能独立模块化编写,方便开发人员并行开发,便捷的应对程控电源和温度采集设备更新带来的软件维护需求;新增故障处理机制,迅速定位并自动修复故障,保证了试验长期运行的稳定性;新增自整定PID算法,解决了航天器热试验过程中存在的非线性、参数时变性和模型不确定性问题,提高了控温精度,减少试验准备时间;软件同时具备试验数据管理和报表生成等功能,温度误差范围为±0.4℃,具有较高工程应用价值。The traditional spacecraft external heat flow measurement and control system has abilities of poor process high-speed data,long control cycle,poor control accuracy and program maintainability,which lacks of the self-tuning PID control strategy and fault location mechanism.In order to solve the above problems,an external heat flow system for the spacecraft vacuum thermal test based on the virtual instrument is developed,which uses the queue-processing framework with multithreading and low-coupling software technique,the overall layered design is adopted with top-down refinement.Each functional model of the software program is independently written,it is convenient for developers to develop in parallel,which easily updates the software maintenance requirements of programmable power supply and temperature acquisition equipment.New fault handling mechanism is added,which locates and repairs faults quickly and automatically to ensure the stability of the long-term test operation;New self-tuning PID algorithm is added,which solves the problems of non-linearity,parameter time-varying and model uncertainty in spacecraft thermal test,improves the temperature control accuracy and reduces the test preparation time.The data management and report generation functions are also included.The temperature error range is ±0.4℃,which has high engineering application value.

关 键 词：外热流 软件框架 自动故障修复 自整定PID 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]