摘要
受航空电源电压波动及自身交流信号残余量的影响,电源电磁兼容的耦合度难以得到有效保障。基于此,文章提出考虑干扰信号的航空电源电磁兼容优化方法研究。将航空电源稳压器的输入和输出分别作为两个独立的信号源,计算纹波比后,滤波器采用压控电压源的方式只允许特定频率范围内的信号通过,抑制其他频率的信号。在测试结果中,设计方法下的耦合度与信噪比之间不存在直接相关关系,对应的测试结果始终稳定在-34.0dB以上,与对照组相比具有明显优势。
Due to the fluctuation of aviation power supply voltage and the residual amount of its own AC signal,the coupling degree of power supply electromagnetic compatibility is difficult to be effectively guaranteed.Therefore,this paper proposes a study on optimization methods for aviation power supply electromagnetic compatibility considering interference signals.The input and output of the aviation power regulator are treated as two independent signal sources,and after calculating the ripple ratio,the filter uses a voltage controlled voltage source to only allow signals within a specific frequency range to pass,suppressing signals of other frequencies.In the test results,there is no direct correlation between the coupling degree and signal-to-noise ratio under the design method,and the corresponding test results are always stable at-34.0dB or above,which has a significant advantage compared to the control group.
作者
常富民
CHANG Fumin(China Aviation Comprehensive Technology Research Institute,Beijing 101300,China)
关键词
干扰信号
航空电源
电磁兼容优化
电源稳压器
信号源
纹波比
滤波器
压控电压源
interference signal
aviation power supply
electromagnetic compatibility optimization
power regulator
signal source
ripple to wave ratio
filter
voltage controlled voltage source
