采用改进编码遗传算法的空间桁架阻尼杆配置优化  

Optimization of Damping Rod Configuration in Space Truss Using an Improved Encoding Genetic Algorithm

作　　者：董治成 苗雪阳 张梅升 姜东[4] 张大海 费庆国[1,2,3] DONG Zhicheng;MIAO Xueyang;ZHANG Meisheng;JIANG Dong;ZHANG Dahai;FEI Qingguo(School of Mechanical Engineering,Southeast University,Nanjing 211189,China;Key Laboratory of Structure and Thermal Protection for High-Speed Aircraft,Ministry of Education,Nanjing 211189,China;Jiangsu Engineering Research Center of Aerospace Machinery,Nanjing 211189,China;School of Mechanical Engineering,Nanjing Forestry University,Nanjing 210037,China)

机构地区：[1]东南大学机械工程学院,南京211189 [2]高速飞行器结构与热防护教育部重点实验室,南京211189 [3]江苏省空天机械装备工程研究中心,南京211189 [4]南京林业大学机械电子工程学院,南京210037

出　　处：《宇航学报》2025年第1期181-192,共12页Journal of Astronautics

基　　金：国家自然科学基金(52125209,52472377);江苏省优秀青年科学基金(BK20231542);江苏省科技厅重点研发产业前瞻项目(BE2022158);空天飞行技术全国重点实验室开放基金课题(KFJJ-2024-14)。

摘　　要：为最大化发挥阻尼杆在桁架减振中的作用,提出一种改进编码方式,依据桁架结构中杆的位置编码,改进了基本遗传算法的相关流程。进一步针对某实际空间桁架结构建立隔振器的力学模型,并以此建立安有隔振器的阻尼杆的等效力学模型和安有阻尼杆的空间桁架结构动力学模型。最后针对两种空间桁架模型,以最大化阻尼杆的减振效果为原则,利用仿真模型开展动力学响应求解和基于改进编码遗传算法的阻尼杆配置优化。结果显示,优化后目标位置的振幅均衰减80%以上,好于优化前的结果,并且算法相较于采用二进制编码的基本遗传算法,收敛速度和稳定性均得到提升。This paper introduces an enhanced coding method that refines the relevant processes of the basic genetic algorithm,leveraging the positional coding of the rods within the truss structure.A mechanical model of the isolator and a dynamic model of the space truss structure with the installed damping rod are established.Subsequently,based on the principle of maximizing the vibration reduction effect of the damping rods for two distinct space truss models,the dynamic model solution and damping rod configuration optimization are conducted using an improved coding genetic algorithm within a simulation model.The results indicate that the amplitude at the optimized target position is reduced by over 80%,surpassing the pre-optimization results.Furthermore,in comparison to the basic genetic algorithm utilizing binary coding,the proposed algorithm exhibits improved convergence speed and stability.

关 键 词：空间桁架 阻尼杆 改进编码 遗传算法 配置优化 

分 类 号：V214.4[航空宇航科学与技术—航空宇航推进理论与工程] TH213.3[机械工程—机械制造及自动化]