单个感应线圈在水下弹丸速度测量中的应用  

Application of Single Induction Coil in Velocity Measurement for Underwater Bullet

作　　者：狄长安[1] 孔德仁[1] 王昌明[1] 

机构地区：[1]南京理工大学机械工程学院,江苏南京210094

出　　处：《南京理工大学学报》2007年第6期727-730,共4页Journal of Nanjing University of Science and Technology

基　　金：国防基础预研项目

摘　　要：为解决单个感应线圈测速目前存在的精度较低的问题,该文在建立水下磁化杆形弹穿过线圈靶的感应信号模型的基础上,通过仿真计算,分析了杆形弹过靶时感应电动势的特点,提出了以特征半径代替线圈靶半径进行计算以及优化线圈匝数使感应线圈靶的工作带宽与感应电动势有效带宽相匹配的方法,使单靶测速精度提高至5%。To solve the low precision of velocity measurement with single induction coil, a model is developed for inductive signal from underwater magnetic rod like bullet crossing induction coil target. By use of simulation calculation, the characteristics of waveform from rod like bullet crossing induction coil target are studied. Methods are presented to increase the precision of velocity measurement by 5%, in which bullet velocity is calculated by replacing radius of coil with characteristic radius and the circles of coils are adjusted to make working bandwidth of the induction coil match the effective bandwidth of the inductive electromotive force.

关 键 词：感应线圈 速度测量 水下弹丸 有效带宽 

分 类 号：TJ04[兵器科学与技术—兵器发射理论与技术] O382.1[理学—流体力学]