| Method of Stressed Lap Shape Control for Large Mirror Fabrication | |
Yi Zheng ; Ying Li; Lei Wang; Daxing Wang
| |
| 2006-07-06 | |
| 会议录名称 | Optomechanical Technologies for Astronomy |
| 卷号 | 6273 |
| 期号 | 6273 |
| 页码 | Vol.6273 0D-1-8 |
| 会议日期 | 2006-5-24 |
| 会议地点 | Orlando, FL |
| 会议主办者 | The International Society for Optical Engineering |
| 出版者 | SPIE |
| 摘要 |
NIAOT has made a stressed lap polishing machine and finished aφ 910mm, F/2.0 paraboloid. In the process we found shape control strategy is an important technology for stressed lap polishing tool and this kind of content has not been discussed systematically before. So this paper mainly dedicates to the method of lap shape control. Firstly a mathematical model of stressed lap is introduced. Then three shape control methods are put forward one by one concerning aspects as shape accuracy and deformation hysteresis. The fundamental method is least square algorithm. On the base of it we put forward its reformation form: least square algorithm with damping factor. To get more satisfied performance a new algorithm using optimization under constrains of linear inequalities is proposed. Through theoretical analysis and computer simulation some comparisons are made among three methods. Finally we have done experiments
using stressed lap polishing machine in NIAOT and the results obtained substantiate the feasibility and efficiency of our method. |
| 关键词 | Optical Fabrication Stressed Lap Linear Inequalities Aspheric |
| 学科领域 | 天文镜面（材料、加工、检测） |
| 文献类型 | 会议论文 |
| 条目标识符 | http://ir.niaot.ac.cn/handle/114a32/445 |
| 专题 | 会议论文 |
| 推荐引用方式 GB/T 7714 | Yi Zheng,Ying Li,Lei Wang,et al. Method of Stressed Lap Shape Control for Large Mirror Fabrication[C]:SPIE,2006:Vol.6273 0D-1-8. |
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| Method of Stressed L（441KB） | 开放获取 | CC BY-NC-ND | 浏览 下载 | |||
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