中文摘要：

轨道加速装置利用电能可以将物体加速到超高速,在高速滑动过程中会对轨道装置接触面造成刨削的损伤。刨削的出现会影响发射效果和降低装置寿命。考虑到轨道发射装置具有大电流和超高速度的特性,提出了一种新的刨削预测模型——电枢电动力驱动功率模型,在此主要通过紫铜电枢-紫铜轨道配对的不同电枢加速模式来验证预测模型的准确性,分析试验结果得到电枢电动力驱动功率模型比电枢速度预测刨削更准确,并提出了预防刨削的建议。

英文摘要：

The rail accelerator can accelerate object to ultra high speed by using electrical ener- gy. High-speed sliding may damage the contact surface of the rails by forming gouging. The gouging may affect the launching effect of electromagnetic railgun and reduce the lifespan of the device. Given the characteristics of high current and ultra-high speed of the railgun, a new gou- ging prediction model named armature electrodynamic force drive power model is proposed. The accuracy of the prediction model is verified by means of different armature acceleration modes with red copper armature-red copper rails pairing. The analysis of experimental results shows that armature electrodynamic force drive power model is more accurate than the velocity forecast model and the suggestions are made for the prevention of gouging.