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为了对电容驱动直线感应电磁发射器的暂态特性进行研究,对由18个驱动线圈组成的两段直线感应电磁发射器进行了数值仿真分析和实验研究。首先利用网孔回路的方法建立了电容驱动的发射器的数学模型,通过MATLAB编写了模拟系统暂态过程的仿真程序;其次运用数值仿真程序对发射器进行了动态过程仿真,分析了抛体初始位置对发射性能的影响,在每段得到了一个最优的抛体初始位置来进行放电;最后对实验装置平台进行了描述,对比分析了仿真和实验的电流波形及每段出口速度。从实验结果可以看出,通过两段的加速能把300 g质量的抛体加速到142 m/s的出口速度,动能转换效率为9.7%。仿真和实验结果有很好的一致性,这说明了所编写的程序的准确性以及电容驱动直线感应电磁器的可行性,为下一步的系统性能优化及高速发射器设计提供了仿真及实验平台。
In order to study the transient characteristics of the capacitive-driven linear induction electromagnetic transmitter, numerical simulation analysis and experimental research on two linear induction electromagnetic transmitters composed of 18 driving coils are carried out. Firstly, the mathematical model of capacitor-driven transmitter was established by using the mesh loop method. The simulation program of transient system simulation was programmed by MATLAB. Secondly, the dynamic simulation of the transmitter was carried out by numerical simulation program. Position on the launch performance, get an optimal initial position of the projectile in each segment to discharge; Finally, the experimental device platform is described, the simulation and experimental current waveform and exit velocity of each section are compared and analyzed. It can be seen from the experimental results that the speed of kinetic energy conversion can reach 9.7% by accelerating the 300 g mass projectile to 142 m / s through the two-stage acceleration. The simulation and experimental results are in good agreement, which shows the accuracy of the program written and the feasibility of capacitance-driven linear induction electromagnetism. It provides a simulation and experimental platform for the next system performance optimization and high-speed transmitter design .