基于均匀设计与线性回归的定日镜结构优化设计

Research on the Optimization Design of Heliostat Structure Based on Uniform Design and Linear Regression

为节约材料,对定日镜结构进行了杆件优化设计研究.以定日镜平面和空间桁架的杆件尺寸为设计参数,以位移及应力为约束,采用均匀设计法对某定日镜进行风荷载作用下的近似优化,得到目标(位移、应力及用钢量)与参数之间的近似函数关系,并详细给出了不同条件下优化后推荐使用的杆件规格.结果表明:优化后的用钢量比现有结构节省13.8%.整个优化过程简单易行,优化结果可靠.

The purpose of this study is to save materials by optimizing the related poles.In this study,the plane and space truss＇s rod sizes were taken as the design parameters,displacement and stress as the constraints.Uniform Design Method was adopted to approximately optimize a heliostat under wind load,and then approximation functions between objective（displacement,stress and consumption of steel） and parameters were obtained.Finally,this study gave the rod specifications under different conditions.Compared with the existing structure,the optimized structure saves 13.8% of steel.This whole process is simple and reliable.