| 增强型轨道炮电感梯度及其影响因素 |
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| 引用本文： | 刘守豹,阮江军,张亚东,苏毅.增强型轨道炮电感梯度及其影响因素[J].电工电能新技术,2009,28(2). |
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| 作者姓名： | 刘守豹 阮江军 张亚东 苏毅 |
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| 作者单位： | 武汉大学电气工程学院,湖北武汉,430072 |
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| 摘 要： | 电感梯度对轨道炮性能有着重要影响.为了实现对增强型轨道炮电感梯度的数值计算,推导了电枢受力公式,介绍了二维时谐涡流场的控制方程,建立了计算电感梯度的二维有限元模型,对一种典型结构增强型轨道炮的电感梯度进行了精确计算,讨论了电感梯度受时谐分析频率和外轨道尺寸影响的规律,给出了不同影响因素下轨道内部电流密度和空间磁力线的分布图,并据此解释了电感梯度变化的原因.根据分析结果给出了增强型轨道炮的优化设计方案.
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| 关 键 词： | 增强型轨道炮 电感梯度 虚功原理 有限元法 趋肤效应 涡流 |
Augmented rail gun inductance gradient and its affecting factors |
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| LIU Shou-bao,RUAN Jiang-jun,ZHANG Ya-dong,SU Yi.Augmented rail gun inductance gradient and its affecting factors[J].Advanced Technology of Electrical Engineering and Energy,2009,28(2). |
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| Authors: | LIU Shou-bao RUAN Jiang-jun ZHANG Ya-dong SU Yi |
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| Affiliation: | School of Electrical Engineering;Wuhan University;Wuhan 430072;China |
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| Abstract: | Inductance gradient directly relates to the magnetic force applied on armature and has great influence on the performance of a rail gun. Comparing with analytic method and experimental measurement method,numerical method has great advantage in obtaining inductance gradient. In order to realize the numerical computation of inductance gradient of augmented rail gun,this paper deduced the armature's force formulation,illustrated the inductance gradient's physical meaning,explained the simplified treatment of r... |
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| Keywords: | augmented rail gun inductance gradient virtual work principle finite element method skin effect eddy current |
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