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Modal simulation and experimental verification of space-borne two dimensional turntable
Zou, Dinghua1,2; Li, Zhiguo(李治国)1; Liu, Zhaohui(刘朝晖)1; Cui, Kai(崔凯)1; Zhang, Yongqiang(张永强)1,2; Zhou, Liang(周亮)1,2
2017
Conference NameApplied Optics and Photonics China: Space Optics and Earth Imaging and Space Navigation, AOPC 2017
Source PublicationAOPC 2017: Space Optics and Earth Imaging and Space Navigation
Volume10463
Conference Date2017-06-04
Conference PlaceBeijing, China
PublisherSPIE
Contribution Rank1
Abstract

In order to avoid the resonance between the two dimensional turntable and the satellite, the modal simulation of the two dimensional turntable is carried out in this paper. And the simulation results are compared with the experimental results, combined with modal experiment, the simulation results before and after optimization are further verified. Firstly, two dimensional turntable as the research object in this paper, and it is modeled with the finite element method, then we use Patran/Nastran to conduct the modal simulation. In the modal simulation process, the bearing can be equivalent to the spring element, and the MPC element is used to instead of the spring element. And we introduce the modeling method of the MPC unit, the fundamental frequency of two dimensional turntable is obtained through modal simulation. At last, the model experiment is verified by hammering method, the frequency response functions in each direction of x, y and z are measured. Simulations and experimental results show: after optimization, the fundamental frequency of the two dimensional turntable is 42 Hz, which is higher than that of the base frequency 25 Hz, illustrating that the optimized structural design of the two dimensional turntable meets the requirements; The natural frequency and the experimental errors of three-dimensional turntable in x, y, z are 5%, which shows that MPC can simulate the bearing accurately, and is suitable for the simulation of two dimensional turntable. © 2017 SPIE.

Department光电测量技术实验室
DOI10.1117/12.2284587
Indexed ByEI ; ISTP
ISBN9781510614079
Language英语
ISSN0277786X
Citation statistics
Document Type会议论文
Identifierhttp://ir.opt.ac.cn/handle/181661/29864
Collection光电测量技术实验室
Affiliation1.Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, No. 17 Information Avenue, Chang'an District, Xi'an; 710119, China
2.University of Chinese, Academy of Sciences, No. 19 Yuquan Road, Shijingshan District, Beijing; 100049, China
Recommended Citation
GB/T 7714
Zou, Dinghua,Li, Zhiguo,Liu, Zhaohui,et al. Modal simulation and experimental verification of space-borne two dimensional turntable[C]:SPIE,2017.
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