周扫式激光通信光端机遮光罩优化设计
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摘要
小卫星激光通信用周扫式光端机安装在卫星外部,光端机在卫星发射过程中会受到巨大的冲击,该机构的遮光罩与锁紧系统相连是光端机锁紧的关键部件,其结构刚度和强度的大小直接影响整机的可靠性。根据周扫式光端机的特点,对遮光罩外部约束条件进行分析与计算,在保证力学要求的前提下,利用拓扑优化与自由尺寸优化相结合的方法对遮光罩进行优化设计,降低遮光罩的重量。分析表明采用优化设计后的遮光罩,其质量下降了17.08%,最大应力与最大位移降低了45.45%和54.93%,前三阶模态也有显著提升,提高了遮光罩的可用性及整机的可靠性。
The circumferential scanning and tracking system used for small satellite laser communication is installed outside the satellite, and it is subjected to huge impact load during the process of satellite launching and rising. The hood connected with the locking mechanism is a key component of optical locking, the stiffness and strength of the structure directly affects the reliability of the whole machine.This paper is based on the characteristics of the circumferential laser communication system. First, the external constraints of the hood were analyzed and calculated. Under the premise of ensuring the mechanical requirements, we optimized the design of the hood by combining topology optimization and free size optimization, so as to reduce the weight of the hood. The analysis shows that the quality of the hood is reduced by 17.08%, the maximum stress and the maximum strain are reduced by 45.45% and 54.93%, respectively, and the first three order modes are also significantly improved, which improves the usability of the hood and the reliability of the whole machine.
The circumferential scanning and tracking system used for small satellite laser communication is installed outside the satellite, and it is subjected to huge impact load during the process of satellite launching and rising. The hood connected with the locking mechanism is a key component of optical locking, the stiffness and strength of the structure directly affects the reliability of the whole machine.This paper is based on the characteristics of the circumferential laser communication system. First, the external constraints of the hood were analyzed and calculated. Under the premise of ensuring the mechanical requirements, we optimized the design of the hood by combining topology optimization and free size optimization, so as to reduce the weight of the hood. The analysis shows that the quality of the hood is reduced by 17.08%, the maximum stress and the maximum strain are reduced by 45.45% and 54.93%, respectively, and the first three order modes are also significantly improved, which improves the usability of the hood and the reliability of the whole machine.
引文
[1]姜会林,佟首峰.空间激光通信技术与系统[M].北京:高等教育出版社,2010.
[2]MILLER E D,DESPENZA M,GAVIRLYUK I,et al.Aprototype coarse pointing mechanism for laser communication[C]//Free-Spacel Laser Communication and Atmospheric Propagation XXIX.Washington:International Society for Optics and Photonics,2017.
[3]SZKELY G.A coarse pointing assembly for optical communication[C]//Proceedings of the 40th Aerospace Mechanisms Symposium.Washington D.C.:NASA,2010.
[4]谭立英,吴世臣,韩琦琦,等.潜望镜式卫星光通信终端的CCD粗跟踪[J].光学精密工程,2012,20(2):270-227.TAN Liying,WU Shichen,HAN Qiqi,et al.CCD coarse tracking of periscope satellite optical communicationterminal[J].Optics and Precision Engineering,2012,20(2):270-227.
[5]宋飞,肖方明.汽车发动机用AZ91D合金的表面改性设计与性能研究[J].热加工工艺,2017,46(22):184-188.SONG Fei,XIAO Fangming.Surface modification design and performance study of AZ91D alloy for automotive engine[J].Hot Working Technology,2017,46(22):184-188.
[6]张钰笔,李德江,胡斌,等.真空度对压铸AZ91D镁合金组织和力学性能的影响[J].特种铸造及有色合金,2016,36(1):52-55.ZHANG Yubi,LI Dejiang,HU Bin,et al.Effect of vacuum degree on microstructure and mechanical properties of AZ91Dmagnesium alloy[J].Special Casting&Nonferrous Alloys,2016,36(1):52-55.
[7]吴国华,陈玉狮,丁文江.镁合金在航空航天领域研究应用现状与展望[J].载人航天,2016,22(3):281-292.WU Guohua,CHEN Yushi,DING Wenjiang.Application status and prospect of magnesium alloy in aerospace field[J].Human Spaceflight,2016,22(3):281-292.
[8]洪清泉,赵康,张攀.Opti Struct&Hyperstudy理论基础与工程应用[M].北京:机械工业出版社,2012.
[9]张雷,柯善良,李林,等.Ф210 mm超薄超轻Si C反射镜多目标集成优化设计[J].光子学报,2017,46(12):89-97.ZHANG Lei,KE Shanliang,LI Lin,et al.Ф210 mm ultrathin super light Si C reflector multi-objective integrated optimization design[J].Acta Photonica Sinica,2017,46(12):89-97.
[10]李雄,吴斌,李昌冉.基于拓扑优化的高空作业吊篮悬吊平台有限元分析及改进设计[J].建设机械技术与管理,2017,30(11):64-67.LI Xiong,WU Bin,LI Changran.The finite element analysis and improvement design of high-altitude operation suspension platform based on topological optimization[J].Construction Machinery Technology&Management,2017,30(11):64-67.
[11]施素烨.地铁车辆下吊设备吊挂梁结构优化设计[J].机电一体化,2017,23(4):45-49.SHI Suhua.Optimization design of hanging beam structure of hanging equipment under subway vehicles[J].Mechatronics,2017,23(4):45-49.
[12]朱路明.复合材料机翼结构拓扑-尺寸联合优化设计[D].杭州:浙江大学,2017.
[13]兰斌,杨洪波,吴小霞,等.Ф620 mm口径地基反射镜组件优化设计[J].红外与激光工程,2017,46(1):198-206.LAN Bin,YANG Hongbo,WU Xiaoxia,et al.Optimized design of mirror component ofФ620 mm aperture foundation[J].Infrared&Laser Engineering,2017,46(1):198-206.
[14]刘伟达,孟立新,张树仁,等.GEO激光通信系统主镜组件优化设计[J].红外与激光工程,2016,45(12):354-360.LIU Weida,MENG Lixin,ZHANG Shuren,et al.Optimization design of main mirror component of GEO laser communication system[J].Infrared&Laser Engineering,2016,45(12):354-360.
[15]李宗轩.主反射镜组件柔性环节随机振动响应分与试验[J].红外与激光工程,2014,43(Sup1):101-107.LI Zongxuan.Analysis and experiment of random vibration response of main mirror component flexible link[J].Infrared&Laser Engineering,2014,43(增刊1):101-107.
[16]朱能兵.轻量化反射镜支撑结构设计研究[D].北京:中国科学院大学,2017.
[2]MILLER E D,DESPENZA M,GAVIRLYUK I,et al.Aprototype coarse pointing mechanism for laser communication[C]//Free-Spacel Laser Communication and Atmospheric Propagation XXIX.Washington:International Society for Optics and Photonics,2017.
[3]SZKELY G.A coarse pointing assembly for optical communication[C]//Proceedings of the 40th Aerospace Mechanisms Symposium.Washington D.C.:NASA,2010.
[4]谭立英,吴世臣,韩琦琦,等.潜望镜式卫星光通信终端的CCD粗跟踪[J].光学精密工程,2012,20(2):270-227.TAN Liying,WU Shichen,HAN Qiqi,et al.CCD coarse tracking of periscope satellite optical communicationterminal[J].Optics and Precision Engineering,2012,20(2):270-227.
[5]宋飞,肖方明.汽车发动机用AZ91D合金的表面改性设计与性能研究[J].热加工工艺,2017,46(22):184-188.SONG Fei,XIAO Fangming.Surface modification design and performance study of AZ91D alloy for automotive engine[J].Hot Working Technology,2017,46(22):184-188.
[6]张钰笔,李德江,胡斌,等.真空度对压铸AZ91D镁合金组织和力学性能的影响[J].特种铸造及有色合金,2016,36(1):52-55.ZHANG Yubi,LI Dejiang,HU Bin,et al.Effect of vacuum degree on microstructure and mechanical properties of AZ91Dmagnesium alloy[J].Special Casting&Nonferrous Alloys,2016,36(1):52-55.
[7]吴国华,陈玉狮,丁文江.镁合金在航空航天领域研究应用现状与展望[J].载人航天,2016,22(3):281-292.WU Guohua,CHEN Yushi,DING Wenjiang.Application status and prospect of magnesium alloy in aerospace field[J].Human Spaceflight,2016,22(3):281-292.
[8]洪清泉,赵康,张攀.Opti Struct&Hyperstudy理论基础与工程应用[M].北京:机械工业出版社,2012.
[9]张雷,柯善良,李林,等.Ф210 mm超薄超轻Si C反射镜多目标集成优化设计[J].光子学报,2017,46(12):89-97.ZHANG Lei,KE Shanliang,LI Lin,et al.Ф210 mm ultrathin super light Si C reflector multi-objective integrated optimization design[J].Acta Photonica Sinica,2017,46(12):89-97.
[10]李雄,吴斌,李昌冉.基于拓扑优化的高空作业吊篮悬吊平台有限元分析及改进设计[J].建设机械技术与管理,2017,30(11):64-67.LI Xiong,WU Bin,LI Changran.The finite element analysis and improvement design of high-altitude operation suspension platform based on topological optimization[J].Construction Machinery Technology&Management,2017,30(11):64-67.
[11]施素烨.地铁车辆下吊设备吊挂梁结构优化设计[J].机电一体化,2017,23(4):45-49.SHI Suhua.Optimization design of hanging beam structure of hanging equipment under subway vehicles[J].Mechatronics,2017,23(4):45-49.
[12]朱路明.复合材料机翼结构拓扑-尺寸联合优化设计[D].杭州:浙江大学,2017.
[13]兰斌,杨洪波,吴小霞,等.Ф620 mm口径地基反射镜组件优化设计[J].红外与激光工程,2017,46(1):198-206.LAN Bin,YANG Hongbo,WU Xiaoxia,et al.Optimized design of mirror component ofФ620 mm aperture foundation[J].Infrared&Laser Engineering,2017,46(1):198-206.
[14]刘伟达,孟立新,张树仁,等.GEO激光通信系统主镜组件优化设计[J].红外与激光工程,2016,45(12):354-360.LIU Weida,MENG Lixin,ZHANG Shuren,et al.Optimization design of main mirror component of GEO laser communication system[J].Infrared&Laser Engineering,2016,45(12):354-360.
[15]李宗轩.主反射镜组件柔性环节随机振动响应分与试验[J].红外与激光工程,2014,43(Sup1):101-107.LI Zongxuan.Analysis and experiment of random vibration response of main mirror component flexible link[J].Infrared&Laser Engineering,2014,43(增刊1):101-107.
[16]朱能兵.轻量化反射镜支撑结构设计研究[D].北京:中国科学院大学,2017.