基于物理规划的多学科多目标设计优化

Multidisciplinary and multi-objective design optimization method based on physical programming

针对复杂产品多学科多目标设计优化存在的耦合严重、计算效率低、难以获得体现设计者偏好的最优解等问题,提出了基于物理规划和改进的协同优化策略的多学科多目标设计优化方法,阐述了该方法的基本思想并给出了设计优化流程。该方法密切结合实际工程设计经验,将多目标优化问题转换为反映设计者偏好的综合目标优化问题,采用改进的协同优化策略建立多层次的优化模型进行并行优化,得到了反映设计者偏好的最优解。以飞机起落架缓冲器为例,证明了该方法可以较好地求解多目标优化问题的折中非裂解。

To resolve the problems like high coupling,low computation efficiency and hard to obtain the optimal solution features with designers＇preferences,a new approach for multidisciplinary design optimization（MDO）and multi-objective design optimization（MODO）based on physical programming and improved collaborative optimization was proposed.The basic ideas and optimization process were presented.Closely combined with the practical engineering experiences,the MODO problems was transformed to comprehensive objective design optimization problem,featuring with designers＇preferences.Then,multi-level optimization model was constructed by improved collaborative optimization strategy so that the optimal solution featuring with designers＇preference was obtained.Finally,taking the absorber of aircraft landing gear as example,the proposed method was proved to resolve the non-inferior solution of MODO effectively.