Parameter Optimization And Characteristic Analysis On Multipole Electromagnetic Launch System

Electromagnetic launch a new concept kinetic energy weapon, with export speed, high emission efficiency, the use of low cost. Electromagnetic launcher can be divided into track type, coil type and reconnection of three types, but they have some defects, the presence of electrical contact rail type launcher and the service life, the axial magnetic field coil type emitter to the projectile by radial compression force, reconnection launcher only emission plate armature. The principle of acceleration of the projectile based on radial magnetic field and interaction, the laboratory research group proposed multipole moments of electromagnetic launch configuration, as a novel electromagnetic launch configuration, many mechanisms are needed for further research or analysis. Mutual influence through the simulation analysis of main parameters and the inherent characteristics of emission performance, and experimental study.This paper from the magnetic diffusion, eddy current field and equivalent circuit analysis of electromagnetic characteristics of multipole moment, provides a theoretical basis for the following analysis and simulation. Followed by the uniform design method was established according to the structure parameters of the model, using the finite element simulation software to establish the three-dimensional transient model, the simulation of different structure parameters by regression analysis model, the optimal structure parameters matching. Through the simulation with different electrical parameters of the model were calculated. The simulation results show that the optimal trigger position, armature speed, pulse power of three mutual influence, through the speed and pulse discharge waveform matching to make more efficient. Then based on equivalent circuit analysis of the impact of coupling characteristics between the driving coil and armature discharge vortex intensity, the simulation results show that the coupling characteristics between the secondary drive coil generates a reverse electromotive force and the armature coil into the secondary eddy current direction change, its movement is the impact of the armature armature and drive coil coupling the main reason, the current through the adjacent drive coil current in the opposite direction can increase the value of the drive coil and armature surface vortex strength. Under certain conditions, the ratio of emission efficiency of different numbers of the polar transmitter, obtained six polar moment optimal comprehensive performance conclusion. The optimal trigger position of experiments at different power parameters, the experiment shows, the armature velocity increasing and the capacitor value is more optimal trigger position is in the front of the different drivers of the experiment using two level experiment, the experimental results show that the adjacent drive coil current in the opposite direction when the system is more efficient.