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Experiment study on friction drive
Guomin Wang; Lisheng Ma; Zhengqiu Yao; Guoping Li
2004-09-29
Source PublicationAstronomical Structures and Mechanisms Technology
Volume5495
Issue5495
PagesVol.5495 419-428
Conference Date2004-6-21
Conference PlaceGlasgow, Scotland
Funding OrganizationThe International Society for Optical Engineering
PublisherSPIE
Abstract
In the past years, friction drive was developed to overcome the inherent deficiencies in both worm drive and gear drive.No periodical error and free of backlash are the main advantages of friction drive. With the trend towards bigger and bigger aperture of the optical telescopes, there are some reports about friction drive employed to drive the telescopes.However friction drive has its own deficiencies, such as slippage and creepage. This report here describes the study on the friction drive finished in an experiment arranged by LAMOST project. It comprises three main parts. First, it introduces the experiment apparatus and proposes a new kind of measurement and adjustment mechanisms. Secondly,the report gives the analysis of friction drive characteristics theoretically, such as slippage, creepage and gives the results of corresponding experiments. The experiment shows that the lowest stable speed reaches 0.05″/s with precision of 0.009″(RMS), the preload has little influence on the drive precision in the case of constant velocity and the variable velocity when the angle acceleration is less than 5″/s2 with close loop control and the creepage velocity of this experiment system is 1.47″/s. Lastly, the analysis in the second section lists some measures to improve the precision and stability further. These measures have been actually conducted in the testing system and proved to be reliable.
KeywordLarge Telescope Friction Drive Ultra-low Speed Slippage Creepage Critical Speed
Subject Area精密机械及传动 ; 自动控制
Document Type会议论文
Identifierhttp://ir.niaot.ac.cn/handle/114a32/385
Collection中国科学院南京天文光学技术研究所_会议论文
望远镜工程中心_会议论文
Recommended Citation
GB/T 7714
Guomin Wang,Lisheng Ma,Zhengqiu Yao,et al. Experiment study on friction drive[C]:SPIE,2004:Vol.5495 419-428.
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