NIAOT OpenIR  > 中国科学院南京天文光学技术研究所  > 会议论文
Control and network system of force actuators for deformable mirror active optics in LAMOST
Zhang Shengtao; Zhang Zhenchao; Wang You
2007-11-21
Source PublicationAdvanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Volume6721
Issue6721
Pages0N-1-8
Conference Date2007-7-8
Conference PlaceChengdu, China
Funding OrganizationThe International Society for Optical Engineering
PublisherSPIE
Abstract
The reflecting Schmidt plate MA of LAMOST consists of 24 segmented hexagonal sub-mirrors. Each sub-mirror is 25mm thick and 1.1m in diagonal. There are 34 force actuators on the back of one sub-mirror which need to be controlled to offer precise load to create correct mirror deformation. This paper presents the control method and network
configuration of force actuators for one sub-mirror. Master computer running Windows NT operation system and slave controllers running DOS operation system are connected together via Ethernet local area network (ELAN) by means of TCP/IP protocol. Adopting five slave controllers, 34 force actuators are combined into a distributed system. Master computer controls five slave controllers and five slave controllers operate 34 force actuators. Master computer communicates with slave controllers normally, which receives state of each force actuator from slave controllers and sends instructions to slave controllers via Ethernet LAN. Each slave controller operates 8 force actuators to offer correct load. Axial load capacity of force actuator is ±150N (pull and push) with accuracy RMS≤0.05N. Force sensor is used as close-loop feedback apparatus to detect the micro load of the actuator.
KeywordForce Actuator Distributed Control Ethernet Lan
Subject Area郭守敬望远镜(lamost) ; 主动光学 ; 自动控制 ; 计算机网络
Document Type会议论文
Identifierhttp://ir.niaot.ac.cn/handle/114a32/468
Collection中国科学院南京天文光学技术研究所_会议论文
望远镜新技术研究室_会议论文
Recommended Citation
GB/T 7714
Zhang Shengtao,Zhang Zhenchao,Wang You. Control and network system of force actuators for deformable mirror active optics in LAMOST[C]:SPIE,2007:0N-1-8.
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