弹丸以微小偏移穿过单线圈对测速的影响  

Influence of Projectile Passing Through Single Coil With a Little Deviation From Axes of Coil on Measuring Velocity

作　　者：狄长安[1] 孔德仁[1] 王昌明[1] 朱蕴璞[1] 

机构地区：[1]南京理工大学机械工程学院,南京210094

出　　处：《弹道学报》2008年第3期100-102,共3页Journal of Ballistics

基　　金：国防基础预研基金项目

摘　　要：针对单个感应线圈测速精度较低的问题,介绍了单个线圈靶测量水下枪弹速度的感应电动势模型,分析了弹丸以微小偏移通过单靶线圈靶时偏移量与感应电动势之间的关系模型.利用Matlab进行仿真计算,给出了偏移量与特征半径之间对应的数值关系,结果表明,在水下弹丸偏离靶心不超过10 mm的条件下此项误差影响不超过0.6%,说明单线圈宜用于测量枪口弹丸速度.Aiming at low precision of measuring velocity with single inducted coil, the induced electromotance model of measuring underwater bullet velocity with single coil target was introduced. Relation model between deviation extent and induced electromotance for projectile passing through single coil with a little deviation was analyzed. Simulation calculation was carried out by Matlab, and numerical relation between deviation extent and characteristic radius was provided. The error is less than 0.6% when the deviation is less than 10 mm. The single coil was adapted for measuring the velocity of muzzle projectile.

关 键 词：单线圈 测速 水下弹道 弹丸 

分 类 号：TJ04[兵器科学与技术—兵器发射理论与技术] TM936.2[电气工程—电力电子与电力传动]