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Modification of the azimuth control system in the LLMC
Li BH(李彬华); Yang L(杨磊); Chen LF(陈林飞); Mao W(冒蔚); Li, BH
会议录名称Proceedings of SPIE - CURRENT DEVELOPMENTS IN LENS DESIGN AND OPTICAL SYSTEMS ENGINEERING
2000
卷号4093
页码193-203
产权排序第1完成单位
收录类别EI ; CPCI
会议名称Conference on Current Developments in Lens Design and Optical Systems Engineering
会议日期2000-08-02
会议地点SAN DIEGO, CA
关键词Llmc Azimuth Transmission Single Chip Microcontroller Astrometry
摘要A new control system of the azimuth transmission mechanism used in the Lower Latitude Meridian Circle (LLMC) is described in this paper. Because the original azimuth transmission mechanism causes too much vibration during the transposition of the horizontal axis of the instrument, we decided to modify the original system by two ways. One is to modify the lift mechanism and the azimuth transmission mechanism. The other is to replace the original stepper motors with a new type of stepper motor. According to the requirement of the new motor and its sine subdivided microstep driver, the original control system has been modified. The new system has an expansion output board and a new control program compared with the original one. The hardware architecture of the new system is described. The program in the single chip microcontroller is written in ASM, which is composed of 10 subroutines. The program in a host PC is written in C++. The methods using in controlling motors and skills in designing these programs are discussed. Two sketch flow charts of the control program are presented in the paper. Modification of the lift mechanism is also introduced. All this works make the vibration very slight.
语种英语
学科领域Optics
出版者SPIE-INT SOC OPTICAL ENGINEERING
出版地1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
ISBN号0-8194-3738-7
ISSN号0277-786X
URL查看原文
归档日期2001-04-06
文献类型会议论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6733
专题天体测量及应用研究组
通讯作者Li, BH
推荐引用方式
GB/T 7714
Li BH,Yang L,Chen LF,et al. Modification of the azimuth control system in the LLMC[C]. 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA:SPIE-INT SOC OPTICAL ENGINEERING,2000:193-203.
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