船舶用电机定子减振降噪优化设计

Optimal Design of Ship Motor Stator Vibration and Noise Reduction

本文通过对电机定子结构进行优化,提高电机减振降噪性能。以电机定子的厚度及内槽数量、外槽宽度为设计变量,通过有限元仿真软件ANSYS求解计算了不同参数的设计变量下电机定子的位移、应力、应变云图,固有频率等,并且进行谐响应分析和随机振动分析。通过多元回归分析得到设计参数与分析结果的近似函数方程,根据所得方程求解最优参数。利用NSGA-II遗传算法,将减振降噪优化设计问题转化为在给定约束下求解多目标的全局最优解问题,得到的最终优化方案。

This article optimizes the motor stator structure to improve the motor's vibration and noise reduction performance.Taking the thickness of the motor stator,the number of inner slots,and the width of the outer slots as design variables,the finite element simulation software ANSYS is used to solve and calculate the displacement,stress,strain cloud diagram,natural frequency,etc.of the motor stator under the design variables of different parameters,and perform the harmonic response.Analysis and random vibration analysis.The approximate function equations of the design parameters and the analysis results are obtained through multiple regression analysis,and the optimal parameters are solved according to the obtained equations.Using the NSGA-II genetic algorithm,the optimization design problem of vibration reduction and noise reduction is transformed into a multi-objective global optimal solution problem under given constraints,and the final optimization scheme is obtained.