西南交通大学学报2025，Vol.60Issue(4)：884-892,9.DOI:10.3969/j.issn.0258-2724.20240477
超导电动悬浮非对称系统多目标优化设计
Multi-objective Asymmetric Design for Optimizing Superconducting Electrodynamic Suspension System
摘要
Abstract
In order to improve the performance of superconducting electrodynamic suspension systems,an optimal design method for asymmetric levitation coils was proposed based on global sensitivity analysis and a multi-objective optimization algorithm.First,a mathematical model of the superconducting electrodynamic suspension system was established using the space harmonic method.The magnetic flux intensity of the superconducting magnets and the electromagnetic forces of the levitation coils were then calculated.Next,the model underwent asymmetric optimization.The Sobol'method was used to calculate the sensitivity of each design parameter,with the levitation force and the mass of the levitation coils per kilometer as the objectives.Based on the sensitivity analysis results,the non-dominated sorting genetic algorithmⅡ(NSGA-Ⅱ)was used for optimization.Finally,finite element simulation was carried out to validate the analytical model based on the space harmonic method.The models before and after optimization were compared.The results indicate that the suspension system model established via the space harmonic method was consistent with the finite element model.Compared with the initial system,the optimized asymmetric suspension system shows an 8.3%improvement in levitation force and a 12.9%reduction in the mass of levitation coils per kilometer.When the vertical displacement is 0.02-0.04 m,the levitation force increases from 262.2 kN to 270.2 kN,and the drag force increases from 4.5 kN to 5.4 kN.When the horizontal displacement is 0.17-0.20 m,the levitation force decreases from 306.5 kN to 228.8 kN,and the drag force decreases from 6.2 kN to 4.6 kN.The fluctuations in levitation force and drag force are approximately 6%and 65%,respectively.The variation patterns of levitation and drag forces with respect to displacement directions were revealed,demonstrating the advantages of asymmetric design in enhancing levitation force and achieving lightweight performance.This provides a theoretical reference for the optimal design of superconducting electrodynamic suspension systems.关键词
电动悬浮/灵敏度分析/非支配排序遗传算法Ⅱ/有限元仿真/超导磁体Key words
electrodynamic suspension/sensitivity analysis/non-dominated sorting genetic algorithm Ⅱ(NSGA-Ⅱ)/finite element simulation/superconducting magnets分类
交通工程引用本文复制引用
王津,葛琼璇,赵鲁..超导电动悬浮非对称系统多目标优化设计[J].西南交通大学学报,2025,60(4):884-892,9.基金项目
国家重点研发计划(2023YFB4302501-02) （2023YFB4302501-02）
