Plasma image processing of high speed arc movement in a rail-gun
Plasma image processing of high speed arc movement in a rail-gun
复制标题
DOI：
10.1109/tps.2005.845292
复制
发表时间：
2005-05
影响因子：
1.5
通讯作者：
T. Iwao;A. Nemoto;M. Yumoto;T. Inaba
中科院分区：
文献类型：
--
作者：
T. Iwao;A. Nemoto;M. Yumoto;T. Inaba
减少电极侵蚀对于维持电弧和降低成本是重要的。通常，使用真空或稀有气体如氩气和氦气来防止电极腐蚀。然而，相关的设备及其布置是昂贵的。如果电弧的阳极附着移动，即使在空气气氛中也可以减少电极腐蚀。本文着重研究了轨道炮中电弧的运动，特别是重燃现象。使用等离子体图像处理对用高速摄像机拍摄的图片测量电弧长度。因此，随着时间的推移确定电弧的长度和位置。阳极的平均速度与阴极的平均速度一样快，即使在重燃模式下也是如此。
Decreased electrode erosion is important to maintain an arc and reduce costs. Normally, a vacuum or rare gases such as argon and helium are used to prevent electrode erosion. However, associated equipment and its arrangement are expensive. If the anode attachment of the arc is moving, electrode erosion can be decreased even in an air atmosphere. This paper specifically addresses arc movement, especially the restrike phenomenon, in a rail-gun. The arc length was measured using a plasma image processing on pictures taken with a high-speed video camera. Thereby, the lengths and positions of the arc are determined over time. The average velocity of the anode is as fast as that of the cathode, even in restrike mode.