Quasi-real-time evaluation system for the FAST cable network operations
ZHANG Ningyuan1,2, LUO Bin1,2, SHEN Yuzhou1,2, JIANG Peng3,4, LI Hui3,4, LI Qingwei3,4
1. Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 211189, China; 2. National Prestress Engineering Research Center, Southeast University, Nanjing 211189, China; 3. National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China; 4. Key Laboratory of FAST, Chinese Academy of Sciences, Beijing 100101, China
Abstract：The reflecting surface of the five-hundred-meter aperture spherical radio telescope (FAST) is supported on a cable-net structure with the active shape changing of the reflecting surface relying on hydraulic actuators to adjust the tie-down cable lengths. The hydraulic actuator linkage control is then a complex multiple degree-of-freedom coupled system. In this paper, a quasi-real-time evaluation system for the FAST cable-net operation is developed. According to the FAST operating characteristics, the system was developed using MATLAB and ANSYS based on mechanical simulation technology. The system included a model processing module, pre-operation analysis module, and quasi-real-time tracking analysis module, which can calculate the face cable stresses, face cable stress amplitudes, tie-down cable forces, and the nodal radial displacement deviations during the cable network operation. The system can also provide monitoring and early fault warnings. The system effectiveness was verified by installing the system on the FAST facility with tests for actual working conditions. The system simplifies the operations and analyses, improves the analysis efficiency, reduces the safety risk in case of actuator failure, and ensures safe operation of the FAST cable network.
张宁远, 罗斌, 沈宇洲, 姜鹏, 李辉, 李庆伟. FAST索网运行准实时评估系统研究与开发[J]. 清华大学学报（自然科学版）, 2022, 62(11): 1816-1822.
ZHANG Ningyuan, LUO Bin, SHEN Yuzhou, JIANG Peng, LI Hui, LI Qingwei. Quasi-real-time evaluation system for the FAST cable network operations. Journal of Tsinghua University(Science and Technology), 2022, 62(11): 1816-1822.
[1] QIU Y K. A novel design for giant radio telescopes with an active spherical main reflector[J]. Chinese Astronomy and Astrophysics, 1998, 22(3):361-368. [2] NAN R D, REN G X, ZHU W B, et al. Adaptive cable-mesh reflector for the FAST[J]. Acta Astronomica Sinica, 2003, 44(S1):13-18. [3] 姜鹏, 王启明, 赵清. 巨型射电望远镜索网结构的优化分析与设计[J]. 工程力学, 2013, 30(2):400-405. JIANG P, WANG Q M, ZHAO Q. Optimization and analysis on cable net structure supporting the reflector of large radio telescope FAST[J]. Engineering Mechanics, 2013, 30(2):400-405. (in Chinese) [4] NAN R D. Five-hundred-meter aperture spherical radio telescope (FAST)[J]. Science in China Series G:Physics, Mechanics & Astronomy, 2006, 49(2):129-148. [5] NAN R D, LI D, JIN C J, et al. The five-hundred-meter aperture spherical radio telescope (FAST) project[J]. International Journal of Modern Physics D, 2011, 20(6):989-1024. [6] PENG B, JIN C J, WANG Q M, et al. Preparatory study for constructing FAST, the world's largest single dish[J]. Proceedings of the IEEE, 2009, 97(8):1391-1402. [7] JIANG P, YUE Y L, GAN H Q, et al. Commissioning progress of the FAST[J]. Science China Physics, Mechanics & Astronomy, 2019, 62(5):959502. [8] 金晓飞, 范峰, 沈世钊, 等. FAST 30m模型张拉成形健康监测研究和应用[J]. 建筑结构学报, 2008, 29(6):132-137. JIN X F, FAN F, SHEN S Z, et al. Research and application of health monitoring on stretch forming of FAST 30m model[J]. Journal of Building Structures, 2008, 29(6):132-137. (in Chinese) [9] 南仁东, 姜鹏. 500m口径球面射电望远镜(FAST)[J]. 机械工程学报, 2017, 53(17):1-3. NAN R D, JIANG P. Five-hundred-meter aperture spherical radio telescope (FAST)[J]. Journal of Mechanical Engineering, 2017, 53(17):1-3. (in Chinese) [10] 范峰, 金晓飞, 王化杰, 等. 巨型望远镜(FAST)反射面结构健康监测系统[J]. 哈尔滨工业大学学报, 2009, 41(12):1-6. FAN F, JIN X F, WANG H J, et al. Health monitoring system of the structure supporting the reflector of FAST[J]. Journal of Harbin Institute of Technology, 2009, 41(12):1-6. (in Chinese) [11] 范峰, 王化杰, 钱宏亮, 等. FAST健康监测数据采集系统开发研究[J]. 哈尔滨工业大学学报, 2010, 42(8):1177-1182. FAN F, WANG H J, QIAN H L, et al. Exploitation and research of data acquisition system of health monitoring system for FAST[J]. Journal of Harbin Institute of Technology, 2010, 42(8):1177-1182. (in Chinese) [12] 王晓琳, 李东平, 朱明, 等. FAST主动反射面健康监测系统设计与应用研究[J]. 广西科技大学学报, 2018, 29(4):84-91, 98. WANG X L, LI D P, ZHU M, et al. Design and application of health monitoring system of main reflector system for FAST[J]. Journal of Guangxi University of Science and Technology, 2018, 29(4):84-91, 98. (in Chinese) [13] 范峰, 王化杰, 钱宏亮, 等. FAST主动反射面支承结构安全预警系统研究与应用[J]. 建筑结构学报, 2010, 31(12):24-31. FAN F, WANG H J, QIAN H L, et al. Ivestigation and application of early-warning system for safety of support structure for active reflector of FAST[J]. Journal of Building Structures, 2010, 31(12):24-31. (in Chinese) [14] 王清梅, 朱明, 王启明, 等. FAST主动反射面健康监测系统数据处理方法研究及应用[J]. 天文研究与技术, 2017, 14(2):164-171. WANG Q M, ZHU M, WANG Q M, et al. Research and application of data processing method of the health monitoring system for the main active reflector of FAST[J]. Astronomical Research and Technology, 2017, 14(2):164-171. (in Chinese) [15] 陈明. FAST健康监测数据管理及集成系统的研究与开发[D]. 哈尔滨:哈尔滨工业大学, 2008. CHEN M. Research and development on data management and integration system of structural health monitoring for FAST[D]. Harbin:Harbin Institute of Technology, 2008. (in Chinese) [16] 金晓飞, 范峰, 钱宏亮, 等. 巨型射电望远镜(FAST)主动反射面结构故障诊断[J]. 土木工程学报, 2010, 43(6):18-25. JIN X F, FAN F, QIAN H L, et al. Fault diagnosis of cable-net structure supporting active reflector of large radio telescope (FAST)[J]. China Civil Engineering Journal, 2010, 43(6):18-25. (in Chinese) [17] 雷政, 姜鹏, 王启明, 等. FAST促动器群系统可靠性研究[J]. 机械工程学报, 2022, 58(6):289-294. LEI Z, JIANG P, WANG Q M, et al. Study of the reliability of actuator group system for FAST[J]. Journal of Mechanical Engineering, 2022, 58(6):289-294. (in Chinese) [18] 刘航. FAST液压促动器群系统可靠性研究[D]. 秦皇岛:燕山大学, 2020. LIU H. Research on the reliability of FAST hydraulic actuator group system[D]. Qinhuangdao:Yanshan University, 2020. (in Chinese) [19] 钱宏亮. FAST主动反射面支承结构理论与试验研究[D]. 哈尔滨:哈尔滨工业大学, 2007. QIAN H L. Theoretical and experimental research on supporting structure of FAST reflector[D]. Harbin:Harbin Institute of Technology, 2007. (in Chinese) [20] 阎楚良, 卓宁生, 高镇同. 雨流法实时计数模型[J]. 北京航空航天大学学报, 1998, 24(5):623-624. YAN C L, ZHUO N S, GAO Z T. Model of rain-flow real-time counting method[J]. Journal of Beijing University of Aeronautics and Astronautics, 1998, 24(5):623-624. (in Chinese) [21] 胡宗武, 董邦宣. "雨流法"与疲劳寿命估算[J]. 机械强度, 1985(4):53-60. HU Z W, DONG B X. Rain-flow method and fatigue life estimation[J]. Journal of Mechanical Strength, 1985(4):53-60. (in Chinese)
2022, Vol. 62 
