基于组合优化算法的致动器安装位置与间隙优化设计

Optimal Design of Installation Position and Gap of Actuator Based on Combinatorial Optimization Algorithm

针对小口径火炮连续发射时的射击精度问题,基于使用以超磁致伸缩材料为核心的致动器对身管的振动抑制展开研究。基于最优拉丁超立方设计方法,开展了DOE试验设计,以身管振幅和致动器受力为目标函数,以致动器安装位置和致动器与身管的间隙为设计变量,采用多岛遗传算法与修正可行方向法形成组合优化算法,使用Isight多学科优化软件对近似模型进行了优化计算。优化后致动器受力降低了88%,同时身管振动幅值降低了52.1%。与仅使用全局优化算法相比较,使用组合优化算法得到最优解时迭代次数减少了47.6%,证明了多岛遗传算法与修正可行方向法形成组合优化算法具有较高的优化效率。

Aiming at the firing accuracy of small-caliber gun in continuous firing,the vibration suppression of barrels was studied based on actuators made of giant magnetostrictive material.The DOE design was carried out based on the optimal Latin Hypercube design method.The vibration amplitude of the barrel and the force of the actuator were taken as the objective function.The installation position of the actuator and the gap between barrel and actuator were taken as design variables.An optimization algorithm was proposed based on multi-island genetic algorithm and modified feasible direction method.The approximate model was optimized by Isight multidisciplinary optimization software.After optimization,the force of the actuator is reduced by 88%,and the vibration amplitude of barrels is reduced by 52.1%.Compared with the global optimization algorithm,iteration times of the proposed combinatorial optimization algorithm are reduced by 47.6%.It means that the combinatorial algorithm composed of multi-island genetic algorithm and modified feasible direction method has higher optimization efficiency.