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首页> 外文期刊>IEEE Transactions on Industrial Electronics >Interior Ballistic Characteristics of Electromagnetic Rail Launcher Considering the Dynamic Characteristics of Real Launcher
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Interior Ballistic Characteristics of Electromagnetic Rail Launcher Considering the Dynamic Characteristics of Real Launcher

机译：考虑实际发射器动态特性的电磁轨道发射器的内部弹道特性

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摘要

In this article, we have presented a three-dimensional transient electromagnetic (EM) force calculation model of the electromagnetic rail launcher (EMRL), which could quickly calculate the transient EM force of the armature and the rail through combining the finite-element method with experiment and proposed the model of structural stiffness nonlinearity of EMRL. To study the interior ballistic characteristics of the EMRL, through the self-programming and the development of commercial finite-element software for the second time, the article presents the first time that an interior ballistic simulation model (IBSM) of the EMRL with EM and structural coupling considering the structural stiffness nonlinearity of EMRL. The correction function is proposed to improve the prediction accuracy of armature dynamic parameters by IBSM and the calculation errors of displacement of IBSM can be guaranteed not to exceed 1% compared with the test results of magnetic probes array. A strain test platform with a demodulation frequency of 8000 Hz was established to verify the IBSM's ability to calculate dynamic characteristics of the armature and the rail. After considering the structural stiffness nonlinearity of EMRL, the simulation accuracy of IBSM has been greatly improved compared with that of linearity. The experimental test results show that the IBSM is ease of application and, meanwhile, performs satisfactorily in terms of high accuracy and low computation.
机译：在本文中，我们已经介绍了电磁轨道发射器（EMRL）的三维瞬态电磁（EM）力计算模型，通过组合有限元方法，可以快速计算电枢和轨道的瞬态EM力实验并提出了EMRL结构刚度非线性模型。为了研究EMRL的内部弹道特征，通过第二次自我编程和商业有限元软件的开发，该物品首次介绍了EMRL的内部弹道模拟模型（IBSM）和EMRL考虑EMRL结构刚度非线性的结构耦合。提出校正功能以通过IBSM提高电枢动态参数的预测精度，与磁探针阵列的测试结果相比，IBSM的位移的计算误差不能超过1％。建立了具有8000Hz的解调频率的应变测试平台，以验证IBSM计算电枢和轨道的动态特性的能力。在考虑EMRL的结构刚度非线性之后，与线性度相比，IBSM的模拟精度得到了大大提高。实验测试结果表明，IBSM易于应用，同时，在高精度和低计算方面表现令人满意。

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