同步感应线圈炮的电枢减速特性  

Speed Reduction of Armatures in Synchronous Induction Coilguns

作　　者：国伟[1] 张涛[1] 苏子舟[1] 曹斌[1] 张洪海[1] 李菊香[1] 

机构地区：[1]西北机电工程研究所,咸阳712099

出　　处：《高电压技术》2014年第4期1173-1179,共7页High Voltage Engineering

基　　金：国家预研项目资助项目~~

摘　　要：为了使同步感应线圈炮获得较大的出口速度和较高的能量转化效率,对同步感应线圈炮固有的电枢减速特性进行了分析研究。从集总参数模型推导并分析了电枢减速特性产生的原因,采用场路耦合的方式进行了定量的仿真计算。根据分析结果,从驱动线圈和电枢线圈之间磁场耦合的角度提出了减小电枢减速特性的方法,并进行了有限元仿真分析。结果表明,改变电源参数如提高电容初始电压或者增加电容值,改变电枢参数如减小电枢质量、采用绕线式电枢,都可有效减小电枢减速特性,提高系统效率。搭建4级线圈炮发射系统进行了实验,对比仿真和实验结果表明,改变电枢参数减小电枢减速特性符合实际需求。结论可供同步感应线圈炮的设计参考。In order to increase the muzzle velocity and energy conversion efficiency of synchronous induction coilgun, we studied the speed reduction, namely, an inherence characteristic of armatures launched by induction coilgun. Through a lumped-element circuit model, firstly, we deduced the reason for armature＇s speed reduction. Then, we carried out quan- titative simulation based on the field-circuit coupled model. According to the simulation and analysis above, we proposed a method to minimize the armature speed reduction from the perspective of magnetic couple between driving coil and ar- mature coil, and then verified the method using finite element simulations. The results show that both adjustment of power supply parameters （for instance, increasing capacitance or initial voltage） and adjustment of armature parameters （for instance, decreasing armature mass or changing armature structure） can effectively reduce the armature speed reduc- tion while increasing launch efficiency. Moreover, the method was tested with a 4-stage induction coilgun. Comparison between the experimental results with the simulation results indicates that adjusting armature parameter to reduce arma- ture speed reduction more meets the requirements of application. The conclusions could be referred by further designs of synchronous induction coilgnns.

关 键 词：电磁发射 同步感应线圈炮 电枢减速特性 电源参数 电枢参数 有限元仿真 

分 类 号：TJ866[兵器科学与技术—武器系统与运用工程]