基于Kriging近似模型的GCHE曲轴稳健性设计  

Robustness Design of GCHE's Crankshaft Based on Kriging Model

作　　者：付磊 张洪信[1] 赵清海[2] 徐东[1] 王东[1] FU lei;ZHANG Hongxin;ZHAO Qinghai;XU Dong;WANG Dong(Mechanical and Electronic Engineering College,Qingdao University,Qingdao 266071,China;Power Integration and Energy Storage System Engineering Technology Center,Qingdao University,Qingdao 266071,China)

机构地区：[1]青岛大学机电工程学院,山东青岛266071 [2]青岛大学动力集成及储能系统工程技术中心,山东青岛266071

出　　处：《机械制造与自动化》2018年第5期101-105,共5页Machine Building & Automation

基　　金：国家自然科学基金项目(51575286);山东省自然科学基金项目(2014ZRB01503;ZR2016EEB20)

摘　　要：缸间齿轮联动液压发动机是一种综合性能较好的新型液压发动机。曲轴位于发动机一侧,曲轴外形为半拐结构,其具有与传统发动机不同的受力情况与工作状况,因此需要对其进行结构优化设计,以实现最佳的工作状态。针对GCHE曲轴结构优化数学模型,基于Kriging近似模型与最优拉丁超立方试验设计方法,创建面向6σ稳健性优化设计的曲轴结构尺寸优化模型。仿真结果表明,该方法可完成对目标性能的最优寻值,并提高约束条件的可靠性和目标函数的稳健性。通过对比确定性优化,稳健设计可使曲轴体积降低1.61%,质量水平达到99.999%。Gear-linked cylinders hydraulic engine(GCHE)is a kind of hydraulic engine with better comprehensive performance.Its crankshaft is located at one side of the body and its structure is half crank structure.Its loads and working conditions are different from conventional engine.To achieve the best working condition,it is necessary to optimize its structure design.Based on Kriging approximation model and design method of the optimal Latin hypercube,the optimization model of crankshaft structure size for 6σrobust design is created for the optim-ization model of GCHE crankshaft structure.The simulation result shows that this method can be used to achieve the optimal searching for the target and improve the reliability of the constraint condition and the robustness of the objective function.Compared with the deterministic optimization,the robust design not only reduces the volume of the crank-shaft by 1.61%,but also achieves the quality level of 99.999%.

关 键 词：液压发动机 GCHE曲轴 6σ稳健性优化 实验设计 Kriging近似模型 

分 类 号：U464.133[机械工程—车辆工程] TP391.9[交通运输工程—载运工具运用工程]