FAST索网运行准实时评估系统研究与开发

张宁远, 罗斌, 沈宇洲, 姜鹏, 李辉, 李庆伟

清华大学学报（自然科学版） ›› 2022, Vol. 62 ›› Issue (11) : 1816-1822.

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清华大学学报（自然科学版） ›› 2022, Vol. 62 ›› Issue (11) : 1816-1822. DOI: 10.16511/j.cnki.qhdxxb.2022.26.023
论文

FAST索网运行准实时评估系统研究与开发

  • 张宁远1,2, 罗斌1,2, 沈宇洲1,2, 姜鹏3,4, 李辉3,4, 李庆伟3,4
作者信息 +

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
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文章历史 +

摘要

500 m口径球面射电望远镜（five-hundred-meter aperture spherical radio telescope，FAST）反射面支承于索网结构上，反射面主动变位依靠促动器调节下拉索长度实现。促动器的协同联动控制是一个多自由度复杂耦合的系统。该文开发了FAST索网运行准实时评估系统，系统根据FAST的工作特点，基于力学仿真技术，采用MATLAB和ANSYS联合开发；包含模型处理模块、预运行分析模块和准实时跟踪分析模块，可对索网运行过程中的面索应力、面索应力幅、下拉索索力和节点径向位移偏差等进行计算分析及监测预警。通过在FAST实际运行工况中的应用，验证了系统的有效性，结果表明：该系统可简化操作分析流程，提高分析效率，降低促动器发生故障时结构的安全风险，确保FAST索网的安全运行。

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.

关键词

FAST / 索网结构 / 力学仿真 / 准实时分析 / 促动器故障

Key words

FAST / cable-net structure / mechanical simulations / quasi-real-time analysis / actuator failure

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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 https://doi.org/10.16511/j.cnki.qhdxxb.2022.26.023
ZHANG Ningyuan, LUO Bin, SHEN Yuzhou, JIANG Peng, LI Hui, LI Qingwei. Quasi-real-time evaluation system for the FAST cable network operations[J]. Journal of Tsinghua University(Science and Technology). 2022, 62(11): 1816-1822 https://doi.org/10.16511/j.cnki.qhdxxb.2022.26.023

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基金

国家自然科学基金面上项目（11973006）；国家自然科学基金资助项目（11673039）

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