电磁枪械（磁阻型线圈式）的有关问题研究

【作者】 朱洪强；

【导师】 徐万和；

【作者基本信息】 南京理工大学 ， 机械电子工程， 2007， 硕士

【摘要】 电磁发射技术是近年来提出的新研究方向，该论文是利用电磁发射技术对电磁枪械的有关问题进行探索。论文中概述了电磁发射技术及其在国内外的发展情况介绍了三种不同结构类型的电磁发射器的基本工作原理和应用前景。并选择磁阻式的线圈型电磁发射作为研究方案，利用磁阻式线圈发射器特殊的加速机理，建立计算模型，对研究方案的主要部件进行了设计分析。利用有限元软件对计算模型进行了电磁场域分析，获得了电磁力、磁链、电感与发射体在定子线圈内不同轴向位置时的变化关系，分析了影响电磁力大小的因素，对模型中的线圈和发射体尺寸进行了优选。使用Simulink对研究方案进行了建模与运动仿真，分析了系统的动态特性，揭示了发射体初始位置、电容器充电电压和电容容量与出膛速度的关系。在以上的研究基础上，设计了一种基于单片机控制关断时间的发射电路，构思了电磁枪械试验系统。所讨论的模型可供电磁枪械的后续研究作参考。更多还原

【Abstract】 The electromagnetic launching (EML) technology is the research direction which is proposed newly in the recent years. This paper is about some issues of electromagnetic gun(EMG) for a exploration by using the EML technology.The paper outlines the EML technology and its development in domestic and abroad, introduces three different types of EM launchers and their basic working principle, prospects the application forground of the EML technology. The research choose the coil-type EM launcher as the research plan. By using reluctance coil launcher’ s special acceleration mechanism, computation model is built and the main components of reluctance coil EMG is analyzed. By using finite element software for the research plan’ s electromagnetic field analysis, the relations between the EM force, flux and inductance of the coil with projectile, which is at different axial position, is studied. The factors what affect the generated EM force is analyzed, and the computation model is optimized on its size and structure by using finite element analysis. Research plan’ s modeling and simulation is made on the use of Simulink, analysis of the dynamic characteristics is did to find the relations between projectile’ s initial position, charging voltage and capacity with the speed of the projectile, and the necessary efficiency analysis. According to the above study, a single-chip microcomputer-based launch model circuit on the control of turn-off time is designed in the end, including the charging section, discharging section and measure of variables. The designed EMG model will provide a reference in the future.更多还原