基于代理模型和敏感度分析的直升机主减速器减振优化  

Vibration reduction optimization for helicopter’s main gearbox based on surrogate model and sensitivity analysis

作　　者：许华超 朱豪杰 韩振华 王勇 秦大同[2] XU Huachao;ZHU Haojie;HAN Zhenhua;WANG Yong;QIN Datong(College of Intelligent Manufacturing and Automotive,Chongqing Polytechnic University of Electronic Technology,Chongqing 401331,China;State Key Laboratory of Mechanical Transmission,Chongqing University,Chongqing 400044,China;Tianjin Aerospace Long March Technical and Equipment Company,Limited,Tianjin 300462,China;College of Mechanical Engineering,Jiangsu University of Technology,Changzhou Jiangsu 213001,China)

机构地区：[1]重庆电子科技职业大学智能制造与汽车学院,重庆401331 [2]重庆大学机械传动国家重点实验室,重庆400044 [3]天津航天长征技术装备有限公司,天津300462 [4]江苏理工学院机械工程学院,江苏常州213001

出　　处：《航空动力学报》2024年第11期395-404,共10页Journal of Aerospace Power

基　　金：国家自然科学基金(52005229);重庆市教委科学技术研究项目(KJQN202203121,KJZD-K202203105);重庆电子工程职业学院校级科研项目(22XJZXYB14);江苏省基础研究计划(BK20201055)。

摘　　要：针对直升机主减速器减振优化存在计算量大、参数多等问题,提出了基于代理模型和全局敏感度分析的直升机主减速器减振优化方法。定义振动性能的评价指标,运用最优拉丁超立方抽样法均匀抽取样本数据,并依次带入直升机主减速器动力学模型求解评价指标样本;采用代理模型构建并替代计算耗时的主减速器动力学模型,以提高优化效率;随后开展参数敏感度分析,确定优化变量,并采用遗传算法在优化参数的取值范围内搜索出最优参数值。结果表明:代理模型能有效替代直升机主减速器动力学模型,啮合刚度是影响系统振动的重要参数,优化后主减速器各测点的振动加速度有效值最大与最小降幅分别为18.01%和4.28%。In view of the problems of large amount of calculation and many parameters in the vibration reduction optimization for helicopter’s main gearbox,an optimal design method for vibration reduction of helicopter’s main gearbox based on surrogate model and global sensitivity analysis was proposed.The evaluation index of the vibration performance was defined.The optimal Latin hypercube sampling method was used to evenly extract the sample data,which were brought into the dynamic model of the helicopter’s main gearbox to obtain the evaluation index samples.The surrogate model was used to construct and replace the time-consuming dynamic model of main gearbox to improve the optimization efficiency.Subsequently,parameter sensitivity analysis was conducted to determine the optimization variables,and genetic algorithms were used to search for the optimal parameter values within the range of optimization parameters.The results showed that the surrogate model can effectively replace the dynamics model of the helicopter’s main gearbox.The meshing stiffness served as an important parameter affecting the system vibration.After optimization,the maximum and minimum reductions in the effective value of vibration acceleration at each measuring point of the main reducer were 18.01%and 4.28%,respectively.

关 键 词：直升机 主减速器 减振 敏感度分析 代理模型 

分 类 号：V275[航空宇航科学与技术—飞行器设计] TH113[机械工程—机械设计及理论]