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Large aperture telescope primary mirror side support structure optimization

Author: LiChengMing
Tutor: WangYiFan
School: Graduate Schoo,Chinese Academy of Sciences
Course: Mechanical Manufacturing and Automation
Keywords: Large-diameter telescope Primary mirror Support structure FEM Deform Optimization
CLC: TH751
Type: Master's thesis
Year: 2010
Downloads: 122
Quote: 0
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Abstract


With the continuous progress of science and technology awareness expanding range, photovoltaic systems as an important tool for people to understand the universe, more and more have shown its important role in the optical aperture optical system is a measure of an important indicator of this is because only photoelectric large caliber systems, photovoltaic systems have a greater light gathering ability, the ability to distinguish can be safeguarded in order to get a clearer observation target reflecting telescope, the primary mirror optical system as the primary optical element has a very important position wherein the main mirror surface accuracy on the impact of reflecting telescope surface accuracy is particularly prominent factors that affect very much, mainly processing errors and errors caused by the support structure for the continuous expansion of the optical system and the different caliber elevation observing demand, so the mirror weight the deformation will have a significant impact on the optical system, and will produce weight changing direction, so support system is the optical system is very important part of the primary mirror diameter to reduce the increase brought about by the increase in weight of the primary mirror, and temperature distortion weight deformation and other issues, various solutions have been proposed, such as improved support for the development of new lightweight materials such manner as the continuous development of science and technology, there has been a lot of new technologies, mainly active optical technology and ultra-thin mirror adaptive optics technology and other support these new technology greatly increases the aperture of the optical system and image quality but for less than traditional photovoltaic systems 1m primary mirror support means supporting people still widely used traditional methods, but for more than 500mm primary mirror for light quantization process, in order to reduce the deformation weight paper for more than 500mm, 1m below the primary mirror side support program has done a detailed analysis of this paper, for the side support programs often encounter a number of issues analysis and optimization, such as the location of the side anchor optimized counterweight factors exist primary mirror opposite shaped rock and the acceleration of the first primary mirror under the lower side support is frequently used push pull structure, the paper onto the pull under 6:00 symmetric structure has been optimized to identify the location of the support optimal solution; while taking into account the optimization of the counterweight, weight and location to find the relationship between the comprehensive analysis in order to find the appropriate 6 The optimal solution of the push pull primary mirror shaking followed by analysis of the resulting reasons, the structure has been improved final analysis of the surface shape of the acceleration factors generated by the analysis of the relevant factors, to identify these factors affect the size of the combined deformation finite element software key components of this simulation, the deformation map

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CLC: > Industrial Technology > Machinery and Instrument Industry > Instruments, meters > Astronomical instruments > Telescope
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