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• 长春光学精密机械与物... [3]
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• OAI收割 [5]

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• 会议论文 [4]
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• 2024 [1]
• 2021 [1]
• 2012 [1]
• 2009 [2]

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• 天文学 [1]
• 天文学::天文学其他... [1]
• 机械工程 [1]
• 机械工程::仪器仪表... [1]
• 机械工程::仪器仪表... [1]
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浏览/检索结果: 共5条，第1-5条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Development of the hexapod for the secondary mirror of the YNAO 2-m Ring Solar Telescope 会议论文  OAI收割 Yokohama, JAPAN, 2024-06-16 作者:  Yang, Dehua;  Wu, Changcheng;  Lu, Qishuai;  Wang, You;  Dai YC(戴懿纯)   |  收藏  |  浏览/下载：14/0  |  提交时间：2024/12/02 2-m Ring Solar Telescope  hexapod  actuator  joint  test  resolution  repeatability   Modeling of errors resulting from vehicle motions for CHZII mobile gravimeter and its performance verification during marine surveys 期刊论文  OAI收割 APPLIED GEOPHYSICS, 2021, 页码: 8 作者:  Tu Hai-Bo;  He Jian-Gang;  Hu Ming;  Liang Xing-Hui;  Liu Lei-Jun   |  收藏  |  浏览/下载：39/0  |  提交时间：2021/11/30 CHZII  mobile gravimeter  motion-induced error from a carrier  repeatability test  comparison test  gravity surveys   Design and experimental research of a new type focus mechanism used in space-based telescope (EI CONFERENCE) 会议论文  OAI收割 2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012, August 5, 2012 - August 8, 2012, Chengdu, China 作者:  Wang D. 收藏  |  浏览/下载：37/0  |  提交时间：2013/03/25 The position of focal plane will be changed because of temperature fluctuation and vacuum environment. In order to make the telescope work well  positioning accuracy of the mechanism is 0.008mm. The performance satisfies the need of precision  a focusing mechanism is needed. To majority of large space-based telescopes  and the scheme design is reasonable and practicable. 2012 IEEE.  the general way to do this would be to use a reflector  which was located in the backfocal distance. One of typical schemes of this mechanism was introduced  however  because of the big axial size  the mechanism can't be used when the size of the enclosure was limited. A new type of focusing mechanism was introduced  which has such advantages of small size  high accuracy and low mass. The design and test methods had been discussed. According to the results  the repeatability positioning accuracy is 0.0025mm   Alignment of off-axis asphere and compensator with four poles (EI CONFERENCE) 会议论文  OAI收割 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 19, 2008 - November 21, 2008, Chengdu, China 作者:  Li J.;  Chen Y.;  Li J.;  Li J.;  Wang P. 收藏  |  浏览/下载：59/0  |  提交时间：2013/03/25 Aspheres are utilized widely thanks to the development of optical design  manufacture and testing. Compensators are usually necessary when aspheres are under test. The alignment of aspheres and their compensators is a risk because it's tough to check whether the compensators work in right way. A new method of alignment with four poles is put forward in this paper. Optical interval error can be tight while it is quite important due to direct influence on central curvature  conic constant and high order coefficients of aspherical surface. A modified on-axis Foucault apparatus is set up since it makes the optical axis visible and helps to control the error of off-axis amount. Some small holes are drilled in the metallic cell of the compensator so that the ends of poles can be stably relied on in order to increase operational repeatability. The method has been carried out practically and it matches the measurement result given by a set of theodolites. 2009 SPIE.   The performance test and the application of CCD (EI CONFERENCE) 会议论文  OAI收割 International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications, June 17, 2009 - June 19, 2009, Beijing, China 作者:  Wang S.-R.;  Qu Y.;  Zhang Z.-D.;  Yang X.-H. 收藏  |  浏览/下载：17/0  |  提交时间：2013/03/25 The e2v technologies' CCD sensor CCD57-10  which will be used as a detector in the Limb UV Imaging Spectrometer  is tested at first. Then the spectral responsivity calibration of the whole Imaging Spectrometer simply is described. The error analysis and the correction of the test of CCD's parameters under good repeatability and stability indicate that the properties of the CCD are suitable to the Limb UV Imaging Spectrometer. The spectral responsivity calibration and the theoretical calculation of the whole Imaging Spectrometer are within an acceptable error level. 2009 SPIE.