气体开关抖动对输出峰值功率和前沿的影响

根据已有的实验数据和理论，给出了抖动和延时的数值表示，利用Matlab软件生成随机数组模拟开关延时和抖动。在Simulink环境下建立简化模型仿真多子块并联直线型变压器驱动源（LTD）模块的工作特性。通过M文件控制模块内多个开关的击穿时序仿真开关抖动，分析开关抖动对40个支路并联输出电流1 MA、上升时间100 ns的LTD模块输出功率峰值及前沿的影响。模拟结果表明，在一定范围内，随着抖动增大，LTD模块输出功率峰值减小，脉冲前沿显著增加，系统的稳定性随抖动增加而降低。随着开关抖动增大，输出到负载的峰值功率减小的速率增大，而脉冲前沿近似于线性增加。由于开关抖动将影响负载输出，为满足一定的系统可靠性要求，存在一个抖动阈值，对于40个子块并联的1 MA LTD模块，在系统可靠性要求5%时，其抖动阈值约为17 ns。

Effects of gas switch jitter on output peak power and pulse front

Numerical representations of switch delay and jitter are given according to previous experimental data and theories. Random arrays are created by Matlab to simulate switch delay and jitter. A simplified model is established to calculate the working characteristics of linear transformer driver (LTD) module with multiple bricks in parallel. M-file is used to control the time sequence of the multiple switches in module to simulate switch jitters. Then effects of switch jitters on peak power and pulse front of 40-brick LTD module with 1 MA peak current and 100 ns rise time are studied. The simulation result shows that, in a certain range, with the increase of jitter, the peak power and system stability decrease, and pulse front increases remarkably. The decrease rate of peak power increases with the increase of jitter, and the pulse front increases almost linearly. Since the switch jitter has important influences on system output, there is a jitter threshold to satisfy certain system stability requirement. As for 1 MA LTD module with 40 bricks in parallel, the jitter threshold is about 17 ns when the system stability requirement is ±5%.