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Design and Practice Multi-channel Real Time System on Deformation Control of Optical Plate
ZHENG Yi; Wang Yin-hu; LI Ying; LI Xin-nan
2012-09-24
Source PublicationSoftware and Cyberinfrastructure for Astronomy II
Volume8451
Issue8451
PagesVol.8451 32-1-8
Conference Date2012-7-1
Conference PlaceAmsterdam, Netherlands
Funding OrganizationThe International Society for Optical Engineering
PublisherSPIE
Abstract
Optical plates (OP) play more and more important role in modern ground-based telescopes. They can be as segments composing primary mirror, deformable mirror for correcting air turbulence or active stressed lap used in polishing large aspherical optics. When control the deformation of these plates, we always confronts with common situations: high shape precision requirement, rapid deformation frequency with real time demand, intrinsic multi-channel coupling characteristic. So how to improve OP deformation performance becomes a critical task in practical design. In this paper, the control principle of OP is first introduced. Then a three-layer control architecture is presented. They are application layer, real time control layer and motion execution layer. After that we designed a prototype system following this framework, targeting active stressed polishing lap which has twelve motion channels. Both the hardware and software development are discussed thereafter. OP surface deformation experiments are carried out and surface shape obtained using LVDT array. Results verify the effectiveness of the design. And we are looking forward to use this control design in more channel and time demanding applications.
KeywordOptical Plate Deformation Control Real Time Mimo System
Subject Area天文镜面(材料、加工、检测)
Document Type会议论文
Identifierhttp://ir.niaot.ac.cn/handle/114a32/654
Collection中国科学院南京天文光学技术研究所_会议论文
大口径光学技术研究室_会议论文
Recommended Citation
GB/T 7714
ZHENG Yi,Wang Yin-hu,LI Ying,et al. Design and Practice Multi-channel Real Time System on Deformation Control of Optical Plate[C]:SPIE,2012:Vol.8451 32-1-8.
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