基于非等间隔GM(1,1)模型的固体电枢初速预测

摘要

为研究小口径固体电枢电磁轨道发射过程中固体电枢初速的精度和稳定性,采用数据光滑处理和背景值积分构造相结合的方法对经典非等间隔GM(1,1)模型进行了改进,在对实验数据拟合和预测的基础上实现了固体电枢初速的初步预测分析.分析结果表明,在其它参数不变的条件下,对电枢直径的合理调整可以有效地提高固体电枢初速的一致性,在一定程序上有助于提高电磁轨道发射的稳定性.%To study the precision and stability of solid-armature muzzle velocity of small caliber e-lectromagnetic railgun during launching process, the classical unequal time-interval GM (1, 1) model was improved by combining smooth processing of data and contraction of background grey level. Based on fitting and prediction of experimental data, the prediction of armature muzzle velocity can be analyzed by using the improved grey model. The analysis results indicate that under the condition of other unchanged parameters, it can improve the consistency of muzzle to reasonably adjust the diameter of armature, the stability of electromagnetic raiigun can be improved to a certain extent.