【摘要】 在舞动监测装置运装机构作业过程中，夹具是实现舞动监测装置稳定夹持的关键部件。夹具轻量化设计可有效减轻无人机负载，而刚度优化则有助于提升结构稳定性与作业精度。为此，提出一种基于响应面法和非支配排序遗传算法Ⅱ(NSGA-Ⅱ)的多目标优化设计方法。首先，对夹具进行参数化建模，在ANSYS Workbench软件静力学分析基础上，得到了夹具实际工况下的整体质量、最大总变形量和最大应力，明确了该部件的优化方向；然后，采用Spearman相关性分析法筛选出对夹具性能影响较大的设计变量，利用最优空间填充(OSF)设计拟合出设计变量与优化目标的Kriging型响应面，结合NSGA-Ⅱ算法获得Pareto最优解集，运用熵权逼近理想解排序(TOPSIS)决策方法进行筛选，从而得到了夹具的最终优化方案；最后，在对优化方案静力学分析后，进一步对其进行模态分析，以确保优化结构不会发生共振。结果表明：优化设计后的夹具质量降低了7.24%,最大总变形量降低了29.54%,最大应力降低了18.46%,且能够有效避免共振现象的产生，验证了所提出的优化设计方法的可行性和有效性。研究结果为相关夹具的优化提供了参考。更多还原

【Abstract】 During the operation of the transportation and installation mechanism of the vibration monitoring device, the fixture is the key component for achieving stable clamping of the vibration monitoring device. The lightweight design of the fixture can effectively reduce the load on the unmanned aerial vehicle, while stiffness optimization helps enhance the structural stability and operational accuracy. Therefore, a multi-objective optimization design method based on the response surface method and non-dominated sorting genetic algorithm Ⅱ(NSGA-Ⅱ) is proposed. Firstly, the fixture is parameterized and modeled. Based on the static analysis in the ANSYS Workbench software, the overall mass, maximum total deformation and maximum stress under the actual working conditions of the fixture are obtained, clarifying the optimization direction of this component. Then, the Spearman correlation analysis method is used to select the design variables with significant impact on the fixture performance. The Kriging-type response surface of the design variables and the optimization objective is fitted using the optimal space filling design(OSF), and the Pareto optimal solution set is obtained by combining the NSGA-Ⅱ algorithm. The technique for order preference by similarity to ideal solution(TOPSIS) decision-making method is used for screening, thereby obtaining the final optimization scheme of the fixture. Finally, after the static analysis of the optimization scheme, modal analysis is further conducted to ensure that the optimized structure does not resonate. The results show that the mass of the optimized fixture has decreased by 7.24%, the maximum total deformation has decreased by 29.54% and the maximum stress has decreased by 18.46%. The optimized design can effectively avoid the occurrence of resonance phenomena, verifying the feasibility and effectiveness of the proposed optimization design method. The research results provide a reference for the optimization of related fixtures.更多还原