There are the application scope limits for single differential-mode current injection test method, so in order to carry out injection susceptibility test for two-pieces equipment interconnected with both ends of a cab...There are the application scope limits for single differential-mode current injection test method, so in order to carry out injection susceptibility test for two-pieces equipment interconnected with both ends of a cable simultaneously, a double differential-mode current in- jection test method (DDMCI) is proposed. The method adopted the equivalence source wave theorem and Baum-Liu-Tesche(BLT) equation as its theory foundation. The equivalent corresponding relation between injection voltage and radiation electric field intensity is derived, and the phase relation between the two injection voltage sources is confirmed. The results indicate that the amplitude and phase of the equivalent injection voltage source is closely related to the S parameter of directional coupling device, the transmission line length, and the source vector in BLT equation, but has nothing to do with the reflection coefficient between the two equipment pieces. Therefore, by choosing the right amplitude and phase of the double injection voltage sources, the DDMCI test is equivalent to the radiation test for two interconnected equipment of a system.展开更多
在飞机级高强辐射场(High-intensity radiated fields,HIRF)试验中,直接电流注入(Direct current injection,DCI)法是一种用于在低频段替代辐射场照射法的试验方法。根据两种试验方法在电缆端口上电流响应结果的等价性,通过传递函数建...在飞机级高强辐射场(High-intensity radiated fields,HIRF)试验中,直接电流注入(Direct current injection,DCI)法是一种用于在低频段替代辐射场照射法的试验方法。根据两种试验方法在电缆端口上电流响应结果的等价性,通过传递函数建立了辐射场场强与直接注入电流间的关系式。在此基础上,采用数值仿真的方法模拟计算了一个机体模型内部各电缆端口上的电流传递函数,并进一步确定了DCI法所需的注入电流值。该方法对于飞机级HIRF试验的开展具有重要的指导意义。展开更多
基金Project supported by Arm Pre-research Program (51333040101), National Defense 973 Program (6131380301 ), National Natural Science Foundation of China (61040003).
文摘There are the application scope limits for single differential-mode current injection test method, so in order to carry out injection susceptibility test for two-pieces equipment interconnected with both ends of a cable simultaneously, a double differential-mode current in- jection test method (DDMCI) is proposed. The method adopted the equivalence source wave theorem and Baum-Liu-Tesche(BLT) equation as its theory foundation. The equivalent corresponding relation between injection voltage and radiation electric field intensity is derived, and the phase relation between the two injection voltage sources is confirmed. The results indicate that the amplitude and phase of the equivalent injection voltage source is closely related to the S parameter of directional coupling device, the transmission line length, and the source vector in BLT equation, but has nothing to do with the reflection coefficient between the two equipment pieces. Therefore, by choosing the right amplitude and phase of the double injection voltage sources, the DDMCI test is equivalent to the radiation test for two interconnected equipment of a system.
文摘在飞机级高强辐射场(High-intensity radiated fields,HIRF)试验中,直接电流注入(Direct current injection,DCI)法是一种用于在低频段替代辐射场照射法的试验方法。根据两种试验方法在电缆端口上电流响应结果的等价性,通过传递函数建立了辐射场场强与直接注入电流间的关系式。在此基础上,采用数值仿真的方法模拟计算了一个机体模型内部各电缆端口上的电流传递函数,并进一步确定了DCI法所需的注入电流值。该方法对于飞机级HIRF试验的开展具有重要的指导意义。