矩形截面轨道发射器电感梯度影响因素研究

摘要

The inductance gradient is one of the important indexes affecting rail launcher performance. For rail launcher inductance gradient many influence factors, carries on the reasonable design can make the railgun performance to achieve optimal results. A rectangular cross-sectional rail launcher model was built based on the Biot-Savart law in this paper. Furthermore, the analytical expression of inductance gradient can be obtained by this model. The single parameter sensitivity analysis method was employed to analyze several factors of the inductance gradient. The result shows that:compared with common methods, this paper performs well in both the height and the space between rails;the reason why it is different in the factor of thickness is shown. The armature position which regarded as one of the factors is introduced in the analytical expression of inductance gradient, and some details are done to explain how does it affects. This can provide reference for future design.%电感梯度是影响轨道发射器性能的重要指标之一，针对轨道发射器电感梯度影响因素众多的问题，对其进行合理的设计能够使轨道炮性能达到优化的效果，从毕奥-萨法尔定律出发，建立了矩形截面轨道发射器模型并求得电感梯度解析表达式；运用单参数灵敏度方法对模型中几种影响因素进行仿真分析并与常见电感梯度计算方法进行对比。结果表明：与常规计算电感梯度方法相比，该模型结果较为理想，验证了准确性；与常规方法的不同点在于引入电枢位置作为电感梯度影响因素之一并说明其影响方式。该研究可为轨道发射器设计提供一定参考。