摘要
为了建设世界最大的综合孔径射电望远镜,使系统具有最高的灵敏度和图像分辨率,对15 m偏置平方公里阵(square kilometre array,SKA)天线设计出一套新型的控制系统。建立了系统的数学模型,对控制环路算法进行了优化和修正,以实现方位、俯仰以及换馈系统的高精度驱动与控制;通过嵌入式软件对工作模式进行切换,完成天文目标的自动跟踪,以提高系统的指向和跟踪精度;进行了系统软硬件功能测试。结果表明,伺服性能及电磁兼容性能均满足SKA观测要求。目前该系统已在SKA射电望远镜应用,可为天文学前沿研究提供技术支撑。
To construct the world’s largest aperture radio telescope and equip the system with the highest sensitivity and image resolution,a new control system was developed for the 15-meter offset SKA antenna.A mathematical model was established,and the control loop algorithm was optimized and corrected to achieve high-precision drive and control of the azimuth,elevation,and feed indexing systems.Embedded software was used to switch operating modes for automatic tracking of astronomical targets,to improve the system pointing and tracking accuracy.The hardware and software tests of the system were completed.The result shows that its servo performance and electromagnetic compatibility meets the SKA observation requirements.Currently,this system is used at the SKA radio telescope,which will provide some support for astronomical research.
作者
张强
张一凡
耿旭光
ZHANG Qiang;ZHANG Yifan;GENG Xuguang(The 54th Research Institute of China Electronic Technology Group Corporation,Shijiazhuang,Hebei 050081,China)
出处
《河北科技大学学报》
北大核心
2025年第6期625-631,共7页
Journal of Hebei University of Science and Technology
基金
国家重点研发计划项目(2023YFA1608203)
国家科技部SKA专项(2021SKA0110101)。
关键词
射电天文学
平方公里阵
伺服控制
天线
跟踪
radio astronomy
square kilometer array
servo control
antenna
tracking
