基于灰色模型的电磁轨道发射实验电枢初速分析

Analysis on Initial Velocity of Armature of Electromagnetic Rail Launching Experiment Based on Grey Model

为了研究电磁轨道发射系统电枢初速影响因素和电枢转捩的辨识方法,在灰关联熵分析的基础上,分别建立了外场试验数据和内弹道理论计算数据的非线性GM(1,N)灰色模型。通过对模型中驱动系数数值和极性的比较,对影响因素的动态协调性进行了定量分析。结果表明:在电磁轨道发射实验中,对电枢初速促进作用最大的是放电电压,其次是电枢直径;测速靶位置对电枢初速的抑制作用最大,电枢质量次之;电枢质量的权重与电枢转捩之间存在某种内在联系。

To research the influencing factors of the armature muzzle velocity and the identification method for armature transition of electromagnetic rail launching systems, nonlinear GM （ 1, N） grey models of interior ballistic theoretical calculation and experimental data are established based on the analysis of grey relations entropy. The coordination of influencing factors is quantitatively analysed through the comparison of the values and polarity of driving coefficients. The results show that：in e- lectromagnetic rail launching experiments, the charge voltage promotes the armature muzzle velocity mostly, and the diameter of the armature takes second place;the position of the measuring velocity target inhibits the armature muzzle velocity mostly, and the mass of the solid armature takes second place;there is a certain inherent positive connection between the weight coefficient of the armature mass and armature transition.