弹丸穿越线圈靶偏移对测速精度的影响

Impact Analysis of Projectile with Deviation of Passing Coil Target for Test Velocity Precision

线圈靶是测量弹丸速度的一种区截装置。将磁化弹丸作为点磁偶极子,通过建立物理模型,利用电磁场的理论,建立磁化弹丸沿线圈靶轴线方向和以一定的偏移量穿越线圈靶的数学模型。利用Matlab软件仿真,得出了偏移量与感应电动势的关系曲线。仿真结果表明,偏移量是影响线圈靶测速精度的重要因素。

Coil target is a zone-block device for measuring projectile＇s velocity.The magnetized projectile being as the point magnetic dipole,through the establishment of physical model,using the theory of electromagnetic field knowledge,the paper deduces the mathematic model when the magnetized projectile along the axis with a certain deviation passes the coil target.By means of Matlab software simulation,the relationship curve between the deviation and induced electromotive force shows that the deviation is an important factor of coil target for test velocity precision.