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基于惯性测量的天线副反射面位姿测量方法的研究
Alternative TitleThe Position and Posture of Sub-reflector Measurement System Design Based on Inertial Measurement Technology
尹航
Subtype硕士
Thesis Advisor陈卯蒸 ; 刘志勇
2017
Degree Grantor中国科学院大学
Place of Conferral北京
Degree Discipline天文技术与方法
Keyword测量系统 射电望远镜 副反射面 惯性测量 嵌入式技术
Abstract课题以新疆天文台奇台110米大型射电望远镜建设项目为背景,研发了一套基于惯性测量原理的测量大型射电望远镜副反射面位姿精确状态的测量系统。 随着射电望远镜口径增大,观测频段提升的同时射电望远镜的精度要求更为苛刻。大型射电望远镜精度满足指标需要靠天线后期的各类测量和调整,因此每部分的测量都显得尤为关键。 该系统基于惯性测量和嵌入式技术,设计了一套测量大型射电望远镜副反射面位姿状态的测量系统,分别设计了信号采集终端和上位机处理软件。对解决超大型射电天线工作中,副反射面位置摆动较大而无法确定精确位置,进而无法基于副反射面上斯特瓦特平台对副反射面进行精确调节以提高观测效率的问题进行了探索。该测量系统是射电望远镜副反射面控制系统构建成为闭环控制系统的 关键模块。副反射面控制系统构建成为闭环控制链路以后,可以极大提高射电望 远镜的整体观测效率。课题对测量系统进行了初步的探讨与设计,并制作了样机, 同时编写了上位机软件。完成设计工作后又进行了一系列的验证试验。 课题为新疆奇台110米射电望远镜的建设提供了一种测试手段,为后续课题的预研提供了硬件保障。
Other AbstractBased on XinJiang QiTai 110M Radio Telescope (QTT) project, this thesis developed a system based on the principle of inertial measurement to measure the state of the sub-reflex surface of large radio telescope. With the radio telescope caliber increases, the observation band to enhance the radio telescope at the same time the requirements of more stringent requirements. Large radio telescope accuracy to meet the indicators needs to rely on the late post-antenna measurement and adjustment, so each part of the measurement is particularly critical. Based on the inertial measurement and embedded technology, a system based on the inertial measurement method is designed to measure the attitude and attitude of the large reflector of the radio telescope. The signal acquisition terminal and the host computer processing software are designed respectively. It solves the problem that the position of the super-large radio antenna is large and cannot determine the exact position, and cannot be adjusted based on the Stewart Platform on the secondary surface to improve the observation efficiency. The measurement system is a key module of the closed-loop control system of the radio telescope sub-reflector control system. After the sub-reflector control system is constructed as a closed-loop control link, the overall observation efficiency of the radio telescope can be greatly improved. The subject of the measurement system was initially explored and designed, and produced a prototype, while the preparation of the host computer software. After completing the design work, a series of validation tests were conducted. The project provides a new test method for the construction of Xinjiang Qitai 110m radio telescope, which provides hardware guarantee for the follow-up research.
Language中文
Document Type学位论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/1709
Collection研究生学位论文
Affiliation中国科学院新疆天文台
Recommended Citation
GB/T 7714
尹航. 基于惯性测量的天线副反射面位姿测量方法的研究[D]. 北京. 中国科学院大学,2017.
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