摘要
利用一种小型脉冲功率系统的脉冲形成网络进行波形调制,得到了锯齿、凸顶和平顶脉冲电流波形,利用这三种脉冲电流开展了导轨型电磁驱动系统中的固体电枢滑行实验,通过测量电枢极限出口速度,比较了不同脉冲电流波形对固体电枢滑行性能的影响。结果表明:电流变化急剧的锯齿波形在较低的充放电能量下就会引起固体电枢与导轨界面接触失效,发生烧蚀现象,因而不利于固体电枢的滑行;相同充放电能量条件下,凸顶波形比平顶波形得到的固体电枢出口测速高,即效率更好;平顶波形可使固体电枢承受更高的充放电能量,且平顶波形比凸顶波形的极限出口测速高;三者相比,平顶波形最有利于固体电枢与导轨良好接触,电枢的滑行性能表现得最好。
By the waveform modulation with the pulse form network （PFN） of a small experimental pulsed power system, the saw-tooth waveform, convex-topped waveform and flat-topped waveform are gotten, and the three kinds of pulse current waveforms are used for the sliding experiment of the solid armature of the electromagnetic rail driving system （EMRDS）. By measuring the ultimate muzzle velocity of the experimental armature, the effects of different pulse current waveforms on the slid ing performance of the solid armature are compared. The experimental results show that under low charging and discharging energy the abruptly changed saw^tooth waveform is easy to cause contact fail, and often makes the ablation phenomenon happen, so it is unfavorable to the sliding performance of solid armatures; under the same charging and discharging energy, the measured muz- zle velocity under the convex-topped waveform pulse is higher than that under the flat-topped one, which means the efficiency of the former is higher than that of the latter; the flat-topped waveform can bear higher charging and discharging energy than the convex-topped one, and its ultimate muzzle velocity is also higher; among the three kinds of waveforms, the flat-topped waveform is the most propitious to the sliding performance of solid armatures because it can provide good contact of the solid armature and rail.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2012年第11期2763-2767,共5页
High Power Laser and Particle Beams
关键词
脉冲电流波形
固体电枢
导轨
滑行性能
电磁驱动
pulse current waveform
solid armature
rail
sliding performance
electromagnetic driving
