长春理工大学学报(自然科学版)
長春理工大學學報(自然科學版)
장춘리공대학학보(자연과학판)
JOURNAL OF CHANGCHUN UNIVERSITY OF SCIENCE AND TECHNOLOGY(NATURAL SCIENCE EDITION)
2014年
3期
27-31
,共5页
于夫男%王刚%许博谦%王磊
于伕男%王剛%許博謙%王磊
우부남%왕강%허박겸%왕뢰
五自由度%二自由度调节平台%三自由度倾斜调节平台%柔性平台
五自由度%二自由度調節平檯%三自由度傾斜調節平檯%柔性平檯
오자유도%이자유도조절평태%삼자유도경사조절평태%유성평태
five DOF%two DOF adjusting platform%three DOF adjusting mechanism%flexible platform
次镜作为展开式望远镜系统的重要光学组成部分,其位置姿态精度直接影响着成像质量的优劣;针对展开式望远镜系统次镜的五自由度位姿调整性能及精度要求,设计了一套由二自由度调节平台与三自由度倾斜调节机构组成的五自由度调整机构,将压电驱动下的柔性微动机构应用于对次镜XY向的精密调节之中;利用理论建模与有限元工程分析相结合的研究方法对压电精密驱动柔性平台动态驱动特性、承载性能进行分析;结果表明,所设计的五自由度调整平台能够满足次镜所需调节精度要求,具有实际意义。
次鏡作為展開式望遠鏡繫統的重要光學組成部分,其位置姿態精度直接影響著成像質量的優劣;針對展開式望遠鏡繫統次鏡的五自由度位姿調整性能及精度要求,設計瞭一套由二自由度調節平檯與三自由度傾斜調節機構組成的五自由度調整機構,將壓電驅動下的柔性微動機構應用于對次鏡XY嚮的精密調節之中;利用理論建模與有限元工程分析相結閤的研究方法對壓電精密驅動柔性平檯動態驅動特性、承載性能進行分析;結果錶明,所設計的五自由度調整平檯能夠滿足次鏡所需調節精度要求,具有實際意義。
차경작위전개식망원경계통적중요광학조성부분,기위치자태정도직접영향착성상질량적우렬;침대전개식망원경계통차경적오자유도위자조정성능급정도요구,설계료일투유이자유도조절평태여삼자유도경사조절궤구조성적오자유도조정궤구,장압전구동하적유성미동궤구응용우대차경XY향적정밀조절지중;이용이론건모여유한원공정분석상결합적연구방법대압전정밀구동유성평태동태구동특성、승재성능진행분석;결과표명,소설계적오자유도조정평태능구만족차경소수조절정도요구,구유실제의의。
The secondary mirror is one of the most important part of deployable telescope,It’s position precision direct-ly affects the image quality,according to the requirement of performance and precision of five DOF adjustment mecha-nism of secondary mirror of telescope system.In this paper, five-degree of freedom adjustment mechanism is designed consisting of two degree of freedom adjusting platform and three degree of freedom mechanism which is used to adjust tilt.Fine flexible platform being driven by PZT is used to XY precision adjustment of secondary mirror,dynamic char-acteristics and bearing characteristics of flexible platform being driven by PZT is analyzed according to using research method of combination of theory modeling and finite element analysis.The results showed that the designed adjustment mechanism can meet the adjustment precision requirement of secondary mirror and have practical significance.