| 摘要:用于飞行器姿态控制的脉喷发动机常采用火药包裹的桥丝电点火器进行点火，电点火器需要短时脉冲电流驱动。本文针对微小型桥丝电点火器驱动需求，设计了光耦隔离恒流源方式及电容储能脉冲放电驱动电路，均实现了对阻值波动桥丝电点火器的点火驱动。试验证明，电容储能放电方式效率高、作用迅速，光耦隔离恒流源方式可靠性高，安全稳定。该两种设计方法可为脉喷发动机的工程实践提供参考。 |
| 关键词: 桥丝电火工品 电容放电 恒流源 点火电路设计 |
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| Bridge Wire Electric Ignition Drive Circuits Design |
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| Abstract:Aircraft attitude control pulse jet engines are often ignited by gunpowder wrapped bridge wire electric igniter,the electric igniter needs short-pulse current drive. In this paper, opto-isolated constant current source and capacitor discharge pulse discharge mode driving circuits are designed for the demand of micro-bridge wire electric igniter, Two kinds of detonating circuit designs implemented the ignition drving of brige wire electric igniter wtih resistance fluctuations. The constant current source mode has the advantages of long storage life, compact spatial structure and high safety, and the reservoir capacitor mode is capable of high energy efficiency and fast-acting for quick initiation.Two programs can provide reference designs for the pulse jet engines of different engineering requirements. |
| Key words: Bridge wire electric igniter Constant current source Capacitor discharge Detonating circuit design |