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The pressure control technology of the active stressed lap
Li Ying; Wang Daxing
Source PublicationAdvanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies
PagesVol.7655 1J-1-5
Conference Date2010-4-26
Conference PlaceDalian, China
Funding OrganizationThe International Society for Optical Engineering
The active stressed lap polishing technology is a kind of new polishing technology that can actively deform the lap surface to become an off-axis asphere according to different lap position on mirror surface and different angle of lap. The pressure of the lap on the mirror is an important factor affecting the grinding efficiency of the optics mirror. The active stressed lap technology using dynamic pressure control solution in the process of polishing astronomical Aspheric Mirror with faster asphericity will provide the advantage like high polishing speed and natural smooth, etc. This article puts emphases on the pressure control technology of the active stressed lap technology. It requires that the active stressed lap keeps symmetrical vertical compression on the mirrors in the process of grinding mirrors. With a background of an active stressed lap 450mm in diameter, this article gives an outline of the pressure control organization, analyzes the
principle of pressure control and proposes the limitations of the present pressure control organization and the relevant solutions, designs a digital pressure controller with C32-bit RISC embedded and gives the relevant experimental test result finally.
KeywordActive Stressed Lap Faster Asphericity Polishing Pressure Dynamic Pressure Digital Controller
Subject Area天文镜面(材料、加工、检测)
Document Type会议论文
Recommended Citation
GB/T 7714
Li Ying,Wang Daxing. The pressure control technology of the active stressed lap[C]:SPIE,2010:Vol.7655 1J-1-5.
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