| 大口径元件面形对离散支撑的频域响应特性 |
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| 引用本文： | 李士猛, 张蓉竹. 大口径元件面形对离散支撑的频域响应特性[J]. 强激光与粒子束, 2009, 21(01). |
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| 作者姓名： | 李士猛 张蓉竹 |
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| 作者单位： | 1.四川大学 电子信息学院, 成都 61 0064 |
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| 摘 要： | 针对口径为600 mm的薄型镜面在多点支撑情况下，分析了不同支撑方案的元件面形在频率域的响应特性，建立了离散支撑单元的1维梁模型，讨论了峰谷值、均方根值分别作为支撑方案优化目标函数的可行性，计算结果说明峰谷值、均方根值均不能正确评价面形在频率域的响应。分析了支撑单元的间距和大小对频率域的响应特性。根据计算结果，给出了理想支撑方案：中心支撑单元直径10 mm，外侧支撑单元直径10 mm，支撑单元间距125 mm。
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| 关 键 词： | 支撑方案 有限元法 频域响应 功率谱密度 |
Frequency-response characteristics of dispersed support for the surface of large-aperture components |
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| li shimeng, zhang rongzhu. Frequency-response characteristics of dispersed support for the surface of large-aperture components[J]. High Power Laser and Particle Beams, 2009, 21. |
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| Authors: | li shimeng zhang rongzhu |
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| Affiliation: | 1. College of Electronics and Information Engineering,Sichuan University,Chengdu 610064,China |
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| Abstract: | In the case of the multi-point support for a thin mirror with a diameter of 600 mm, the paper studied the frequency-response of components’ surface, which was influenced by different support schemes. A one-dimensional beam model of dispersed support units had been established. The feasibility of the peak-to-valley(P-V), RMS values as support optimization objective functions was discussed. The result is that the values of P-V, RMS can not be the correct evaluation of the surface in the frequency domain response. Then, the frequency-response characteristics influenced by the interval and size of support units were analyzed. According to the results, the ideal support scheme is: the diameters of the center and lateral support units are 10 mm; the support unit interval is 125 mm. |
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| Keywords: | support scheme finite element method frequency-response psd |
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