基于违反程度的协同优化方法研究及应用  

Research and Application of Collaborative Optimization Method Based on Violation Degree

作　　者：王傲 赵晶[1] WANG Ao;ZHAO Jing(School of Mechanical Engineering,Shenyang University of Technology,Shenyang 110870,China)

机构地区：[1]沈阳工业大学机械工程学院,沈阳110870

出　　处：《组合机床与自动化加工技术》2024年第9期25-29,34,共6页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：辽宁省“揭榜挂帅”科技攻关项目(2021JH1/10400084)。

摘　　要：针对多学科协同优化算法计算量大、收敛速度缓慢、动态松弛因子失效问题,提出了基于系统级设计变量违反程度改进的动态松弛因子,使松弛因子里的系统级搜索范围因子不再是定值而是动态变化,并将各子学科原目标函数动态加权一个递减函数,把它们统一加权到子学科现目标函数中,既减小松弛因子失效的可能性,又加深了各子学科之间的独立性。通过算例对改进的算法进行验证,计算结果表明,改进的算法收敛速度快,结果精度也有明显的提高,最后改进的算法应用在轮胎成型鼓上。Aiming at the problems of large computation amount,slow convergence speed and failure of dynamic relaxation factor of multi-disciplinary collaborative optimization algorithm,a dynamic relaxation factor based on the improvement of violation degree of system-level design variables is proposed,so that the system-level search range factor in the relaxation factor is no longer fixed but dynamically changes,and the original objective function of each subdiscipline is dynamically weighted to a decreasing function.By weighting them uniformly into the objective function of subdisciplines,the possibility of relaxation factor failure is reduced,and the independence between subdisciplines is deepened.Examples are given to verify the improved algorithm,and the results show that the improved algorithm converges quickly and the accuracy of the results is obviously improved,Finally,the improved algorithm is applied to the tire forming drum.

关 键 词：多学科协同优化算法 收敛速度 动态松弛因子 违反程度 成型鼓 

分 类 号：TH164[机械工程—机械制造及自动化] TG659[金属学及工艺—金属切削加工及机床]