华中科技大学学报（自然科学版）2024，Vol.52Issue(7)：37-44,8.DOI:10.13245/j.hust.240842
考虑动态接触电阻的电磁能装备直线推进模型
Linear propulsion of electromagnetic energy equipment considering the dynamic contact resistance
摘要
Abstract
Aiming at the problem of insufficient accuracy of armature speed calculation during the finite element calculation of linear propulsion electromagnetic energy equipment,an improved model of linear propulsion electromagnetic energy equipment considering dynamic contact resistance was proposed to make the calculation results closer to the actual working conditions.First,the control equations under the armature motion conditions of the linear propulsion electromagnetic energy equipment were derived for finite element analysis.Then,considering the influence of dynamic contact resistance on inductance gradient and armature speed,an improved model considering dynamic contact resistance was established on the basis of finite element analysis,and the PSO-GA(particle swarm optimization-genetic algorithm)hybrid algorithm was used to identify the parameters of the established model,so as to obtain the prediction function of inductance gradient and armature speed considering the influence of dynamic contact resistance.Finally,an experimental platform for linear propulsion of electromagnetic energy equipment was built to test the armature speed.By comparing the predicted values of the improved model with the experimental test values,it is found that the improved model can further reduce the computational error,and the prediction results show a better consistency with the actual test situation,which provides a certain theoretical basis for the research of full-fidelity simulation of linear propulsion electromagnetic energy equipment.关键词
直线推进电磁能装备/动态电感梯度/动态接触电阻/数值模拟/参数辨识Key words
linear propulsion electromagnetic energy equipment/dynamic inductive gradient/dynamic contact resistance/numerical simulation/parameter recognition分类
军事科技引用本文复制引用
闫荣格,姜金波,杨庆新..考虑动态接触电阻的电磁能装备直线推进模型[J].华中科技大学学报（自然科学版）,2024,52(7):37-44,8.基金项目
国家自然科学基金重大研究计划重点项目(92066206) （92066206）
河北省省级科技计划资助项目(225676163GH). （225676163GH）
