深空太阳天文台相关跟踪器集成化建模与仿真研究

Image motion can significantly affect the resolution of the main optical telescope in Deep Space Solar Observatory. The correlation tracker as an image motion compensation system improves solar imaging. This project tends to build an integrated model of correlation tracker using system simulation method and computer technology. According to a variety of errors in simulation, the accuracy of correlation tracker integrated model is analyzed, and the simulation computer program is evaluated. The differences between results of physics experiments and computer simulations are used to validate the accuracy of integrated model. With the right model, the system performance influencing factors are analyzed and deep space solar observatory correlation tracker is optimal designed. The system performance test and space environment impact analysis simulation experiments are carried out. A control scheme with double-loop and adaptive controller that can be realized in the real-time implementation is designed to meet performance requirements of correlation tracker.And the effectiveness of this control scheme is verified by computer simulation experiments. Through this project, mastery of the integrated modeling method and adaptive control technique will make correlation tracker a better use in deep space solar observatory, and system simulation will be extensively extended in astronomial instrument and astronomial telescope optimal design.

本项目以深空太阳天文台磁场望远镜实现高分辨率特性的关键部件- - 相关跟踪器为研究对象，采用计算机仿真技术、集成化技术和可视化技术建立相关跟踪器的集成化仿真模型；分析建模仿真中的各种误差对仿真模型精确性的影响，进行仿真程序校核，比较仿真模型结果与实际系统运行结果以验证模型的准确度。应用校核、验证后的相关跟踪器仿真模型进行系统性能影响因素分析和深空太阳天文台相关跟踪器优化设计。对采用优化设计方案的相关跟踪器仿真模型进行系统性能测试仿真实验和空间环境影响分析仿真实验。在相关跟踪器经典控制器设计的基础上研究设计双回路控制结构和自适应控制器，仿真比较不同控制结构和控制方法的控制效果。本项目的研究对深空太阳天文台相关跟踪系统优化设计和系统研制具有重要意义，同时也为天文仪器和大型天文望远镜的优化设计提供了方法。

本项目以应用于深空太阳天文台磁场望远镜的相关跟踪器为研究对象，采用计算机仿真技术、集成化技术和可视化技术建立了相关跟踪器的集成化仿真模型；对该模型进行校核与验证；应用确认后的模型进行系统性能影响因素的定性和定量分析；根据深空太阳望远镜的设计指标要求优化设计相关跟踪器；对优化设计后的相关跟踪器模型进行系统性能仿真测试实验以及空间环境和卫星平台抖动的系统性能影响仿真分析实验；研究相关跟踪器的双回路控制结构和自适应控制算法。研究结果表明，集成化仿真技术是天文仪器和大型望远镜系统的分析和设计的有效工具；将模型校核、验证与确认技术贯穿于集成化仿真过程提高了模型的置信度；采用自适应滤波与PID复合双回路控制的控制效果优于经典PID控制，更适合于空间应用。