摘  要：当同步感应线圈炮驱动线圈馈入强脉冲电流时，形成变化的磁场，驱动线圈和弹丸线圈之间将产生强大的磁场力，磁场力使弹丸线圈发射出去。而磁场力的大小和方向是由磁场的大小和分布直接决定，因此，非常有必要对同步感应线圈炮的磁场分布进行研究。文章根据同步感应线圈炮的工作原理，建立其磁场计算模型，通过该模型，利用Matlab编制程序对同步感应线圈炮磁场进行仿真分析，得出其磁场的分布规律，为进一步改善同步感应线圈炮的结构和提高其性能提供可靠的参数。
关键词：驱动线圈；电枢；磁场；Matlab 

Abstract: As a kind of coil gun,synchronous induction coil gun includes two parts-drive coil and projectile coil (armature).When impulse current feeds into the drive coil, it will form the varying magnetic field and then generate strong electromagnetic force. At last, the projectile coil is launched by electromagnetic force. But the electromagnetic force is directly decided by the extent and distribution of the magnetic field. Therefore, it is very necessary to study the magnetic field distribution of synchronous induction coil gun. Based on the principle of work of synchronous induction coil gun, the article built the calculation model of magnetic field. Through the model, the article worked out the program for the magnetic field of synchronous induction coil gun by Matlab and it has discovered the distribution law of magnetic field. It will proffer reliable parameter for improving the structure and performance of synchronous induction coil gun.
Key words: drive coil; armature; magnetic field; Matlab