射电望远镜主动反射面系统的控制
Control of active reflector system for radio telescope
查看参考文献14篇
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文摘
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针对新疆奇台110m射电望远镜主动反射面控制技术的要求,设计和研制了一种新型的位移促动器和位移控制系统,并采用双频激光干涉仪对多个位移促动器及其控制系统进行了全面检测。位移促动器采用了基于涡轮蜗杆加滚珠丝杆的高精度结构设计方案,控制器系统采用了ARM微处理器。最后选择S曲线加速控制方法,设计了主动反射面控制系统硬件平台和软件算法。基于双频激光干涉仪和光学隔振平台在恒温超洁净条件下进行了系列测试。结果表明:系统实现了行程范围为30mm,控制精度为5μm RMS的快速精密控制;在额定负载300kg,步长2mm,行程30mm范围内,实测结果平均值与理论值偏差为0.04%,标准偏差为3.67μm。最后,采用测量精度为0.25μm的激光传感器对4块四点支撑的四边形子面板进行了验证检测。结果显示:经多次迭代后主动反射面控制闭环系统的控制精度小于5μm RMS,远远优于3mm波段射电望远镜主动反射面控制的技术要求。 |
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其他语种文摘
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According to the control requirements of the active reflector surface in the 110 mradio telescope at QiTai(QTT)Xinjiang,a new displacement actuator and a new displacement control system were designed and manufactured and then their characteristics were tested by a dual-frequency laser interferometer in the micro-displacement laboratory.The displacement actuator was designed by a scheme of high precision worm and roller screw structures,and the displacement control system was based on a ARM micro-processor.Finally,the Scurve acceleration control methods were used to design the hardware platform and software algorithm for the active reflection surface of the control system.The test experiments were performed based on the laser metrology system on an active reflector close-loop antenna prototype for large radio telescope.Experimental results indicate that it achieves a 30 mm working stroke and 5 μm RMS motion resolution.The accuracy (standard deviation)is 3.67μm,and the error between the determined and theoretical values is 0.04% when the rated load is 300kg,the step is 2mm and the stroke is 30mm.Furthermore,the active reflector integrated system was tested by the laser sensors with the accuracy of 0.25μm RMS on 4-panel radio telescope prototype,the measurement results show that the integrated precision of the active reflector closed-loop control system is less than 5μm RMS,and well satisfies the technical requirements of active reflector control system of the QTT radio telescope in 3mm wavelength. |
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来源
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光学精密工程
,2016,24(7):1711-1718 【核心库】
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DOI
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10.3788/ope.20162407.1711
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关键词
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射电望远镜
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主动反射面
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S曲线加速控制算法
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位移促动器
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位移控制系统
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地址
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中国科学院国家天文台南京天文光学技术研究所, 中国科学院天文光学技术重点实验室, 江苏, 南京, 210042
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1004-924X |
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学科
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机械、仪表工业 |
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基金
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国家自然科学基金资助项目
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国家973计划
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文献收藏号
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CSCD:5767610
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参考文献 共
14
共1页
|
|
1.
Jewell P R. The green bank telescope.
Proc.of SPIE,4015,2000:136-147
|
CSCD被引
1
次
|
|
|
|
|
2.
Todd R H. Holographic measurement and improvement of the green bank telescope surface.
Publications of the Astronomical Society of the Pacific,2011,123(907):1087-1099
|
CSCD被引
1
次
|
|
|
|
|
3.
Souccar K. The architecture of the active surface control system of the Large Millimeter Telescope.
Proc.of SPIE,9151,2014:91512J.1-91512J.6
|
CSCD被引
1
次
|
|
|
|
|
4.
沈志强. 上海65米射电望远镜.
科学,2013,65(3):15-20
|
CSCD被引
12
次
|
|
|
|
|
5.
Andrew T S. Finite element analyses of CCAT preliminary design.
Proc.of SPIE,9145,2014:914521.1-914521.17
|
CSCD被引
1
次
|
|
|
|
|
6.
German C M. Active surface segmentation analysis of CCAT.
Proc.of SPIE.,6267,2006:62672X.1-62672X.11
|
CSCD被引
1
次
|
|
|
|
|
7.
王娜. 新疆奇台110米射电望远镜.
中国科学:物理学 力学 天文学,2014,44(8):783-794
|
CSCD被引
66
次
|
|
|
|
|
8.
钱宏亮. 上海65 m射电望远镜非均匀温度场及其效应.
光学精密工程,2014,22(4):970-977
|
CSCD被引
6
次
|
|
|
|
|
9.
弓雷.
ARM嵌入式Linux系统开发详解,2014
|
CSCD被引
2
次
|
|
|
|
|
10.
黄兆斌. 几种步进电机加减速方法的对比研究及其应用.
机电工程,2011,28(8):951-953
|
CSCD被引
7
次
|
|
|
|
|
11.
曾康玲. 步进电机指数型加速曲线优化与实现.
微电机,2014,6:36-40
|
CSCD被引
1
次
|
|
|
|
|
12.
Yang D H. An active surface upgrade for the Delingha 13.7-m Radio Telescope.
Proc.of SPIE,8444,2012:84444B.1-84444B.10
|
CSCD被引
1
次
|
|
|
|
|
13.
许素安. 基于压电陶瓷光电相移驱动的大行程纳米定位系统.
光学精密工程,2014,22(10):2773-2778
|
CSCD被引
3
次
|
|
|
|
|
14.
Zhang Y. An active reflector antenna using a laser angle metrology system.
Research in Astronomy and Astrophysics,2012,12(6):713-722
|
CSCD被引
3
次
|
|
|
|
|
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