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为了克服交流驱动介质阻挡放电产生连续低温等离子体应用于脉冲爆震发动机点火的困难,通过频率控制,成功设计了按一定频率周期性地产生低温等离子体,放电参数可调,单次放电时间为0.1~1000ms频率为0.1~100Hz。等离子体点火器采用同轴电极结构,单次放电时间0.5ms实现了可燃混气点火,成功触发爆震,这些结果表明采用交流驱动低温等离子体点火触发爆震是可行的。
In order to overcome the difficulty of continuous low-temperature plasma generated by AC-driven dielectric barrier discharge applied to pulse detonation engine ignition, a low-temperature plasma is periodically generated by frequency control through frequency control. The discharge parameters are adjustable and the single discharge time is 0.1 ~ 1000ms frequency of 0.1 ~ 100Hz. The plasma igniter adopts the coaxial electrode structure. The single discharge time of 0.5ms achieves ignition of flammable gas mixture and successfully triggers detonation. These results indicate that it is feasible to use the AC-driven ignition of low-temperature plasma ignition.