基于改进PSO的可靠性稳健优化计算方法

基于现代设计方法和可靠性设计理论,建立了多目标约束优化数学模型,根据动态加速常数和速度自适应的改进粒子群算法(PSO),用编写的程序代码实现了数学模型的数值化求解。同时研究了加速常数和粒子速度的变化对优化计算结果的影响规律。算例表明,提出的可靠性稳健优化计算方法与传统方法相比,具有简便易行、能迅速得到结构可靠性稳健优化设计信息的优点,适合工程应用。

A Computational Method on Reliability Robust Optimization Based on Improved PSO

According to the improved PSO with dynamic acceleration constant and speed adaptation,the multi-objective constrained optimization mathematical models were built on the basis of modern design method and robustness design theory,then the numerical solution reached through computational codes.The effect law of accelerating constant and particle velocity on optimization results were obtained through computations.This work puts forward a new computational method on reliability robust optimization.Compared with existing algorithms,it is simple and rapid to obtain the information of the structure reliability robust optimization design.A practical example demonstrates efficiency of the new method in engineering applications.