FAST望远镜主动反射面促动机构运动学研究

陆震; 杨光; 王启明; 南仁东

FAST望远镜主动反射面促动机构运动学研究

1.
北京航空航天大学自动化科学与电气工程学院, 北京 100083
2. 北京航空航天大学机械工程及自动化学院, 北京 100083
3. 中国科学院国家天文台, 北京 100012

基金项目: 国家自然科学基金资助项目(50375007); 中科院知识创新工程资助项目(FAST-方-A-01)

详细信息

中图分类号: P 161; TH 112
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出版历程
- 收稿日期: 2004-12-09
- 网络出版日期: 2006-02-28

Research on mechanism of actuated active reflectors for FAST

1.
School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
2. School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
3. National Astronomical Observatory, Beijing, 100012, China

摘要

摘要: 针对现有的FAST(Five-hundred-meter Aperture Spherical Telescope)主动反射面调整运动机构和促动器试验方案的不足,提出一种新型机构,能够有效地解决反射面边缘单元侧滑问题,并提高整个系统机械效率、可靠性,降低制造成本和运行维护费用.改进的核心是利用Sarrus机构产生理想的直线运动而没有任何侧滑.通过运动学分析证实了模型样机的可行性,静力分析表明这个系统具有足够的强度和刚度.模型的运行试验和仿真证明,即使在基座倾斜45°的条件下这种新型促动器机构能够可靠地防止反射面单元侧滑.这种改进为实际系统的设计和研制提供了至关重要的理论依据和试验数据.
- 射电天文学 /
- 射电望远镜 /
- 机构(FAST)
Abstract: A new type of actuate mechanism for the active reflector of FAST(five-hundred-meter aperture spherical telescope) radio telescope was proposed so that one can overcome the deficiency of original actuate mechanism. The mechanism was utilized to prevent from the sideslip in the margin cell of the active reflector, and to promote the mechanical efficiency and reliability, and to reduce the cost of manufacture and operate. The core of the improvement is so-called Sarrus linkage that can produce perfect translational motion without any sideslip. The kinematical analysis was made to demonstrate the feasible of the prototype, and the force analysis indicates that the system has sufficient strength and stiffness. The prototype operation and simulation prove that one can prevent any sideslip of the reflector’s units based on the new type actuate mechanism, even in the base slope of 45°. The issuers of being improved point out, which are essential for the design and manufacture of the real system.
- radio astronomy /
- radio telescope /
- mechanism(FAST)

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参考文献(1)

[1] 上海网上天文台 ,http://www.astron.sh.cn,2003/2004 Shanghai Astronomical Observatory Online , http://www. astron.sh.cn, 2003/2004(in Chinese) [2] 程景全. 天文望远镜原理和设计:射电、红外、光学、X射线和γ射线望远镜[M] 北京:中国科学技术出版社,2004 Cheng Jingquan. The theory and design of astronomical telescope:radio, infrared, optical, X ray and gamma ray telescope [M] Beijing:Chinese Science and Technology Press, 2004(in Chinese) [3] 邱育海.具有主动反射面的巨型球面射电望远镜[J] 天体物理学报,1998, 18(2):222~227 Qiu Y H. The novel design for giant spherical radio telescope with active main reflector[J] ACTA Astrophysica Sinica, 1998, 18(2):222~227(in Chinese) [4] Qiu Y. A novel design for a giant Arecibo-type spherical radio telescope with an active main reflector[J] MNRAS, 1998, 3(1) [5] 李国强,沈黎元,罗永峰,等. 大射电望远镜反射面板非线性分析[J] 同济大学学报(自然科学版),2004, 32(2):161~166 Li Guoqiang, Shen Liyuan, Luo Yongfeng, et al. Nonlinear analysis of large radio telescope reflector panel[J] Journal of Tongji University(Natural Science), 2004, 32(2):161~166(in Chinese) [6] 陆震. 高等机械原理[M] 北京:北京航空航天大学出版社,2001 Lu Zhen. Advanced theory on mechanism [M] Beijing:Beijing University of Aeronautics and Astronautics Press, 2001(in Chinese) [7] 张启先. 空间机构的分析与综合.上册 [M] 北京:机械工业出版社,1984 Zhang Qixian. The analysis and synthesis of spatial mechanisms. (First Volume) [M] Beijing:China Machine Press, 1984(in Chinese) [8] 吴盛殷,南仁东. 射电天文中焦面阵或多波束馈源的应用[J] 天文学进展,2001, 19(4):421~435 Wu Shengyin, Nan Rendong. Applications of the focus plane array or the multi-beam feed system in radio astronomy [J] Progress in Astronomy, 2001, 19(4):421~435(in Chinese) [9] Nan R, Peng B. A chinese concept for the 1 km2 radio telescope . Acta Astronautica, 2000, 46(12) [10] 万同山. 空间VLBI研究的现状和未来[J] 天文学进展, 1999, 17(2):136~147 Wan Tongshan. The present and future of space VLBI[J] Progress in Astronomy,1999, 17(2):136~147(in Chinese)

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