摘要
在某型飞机的试飞过程中,发现大气数据传感器的输出信号在传输线上,有分布电容对其进行干扰而产生自激,影响了传感器的数据精度。经过分析和对比试验,提出了在成品设备直流输出高、低端各接一级消激电路,来消除分布电容引起的自激干扰,提高成品设备的抗干扰能力。通过机上试验,验证了该方法的有效性。
It is found that the data precision of atmosphere data sensor is affected during the test-fly of a certain plane. The reason for this is that sensor＇s output signal on the transmission cable brings on a self-excitation caused by distributed capacitance. By contrast experiment, a solution is proposed that the self-excitation interference can be eliminated by connecting a eliminate circuit at both direct current high and low carry-out terminal of shelve-off equipment in this paper. The method can improve the antijamming ability of finished product. Finally, its validity is verified by experiments.
出处
《计测技术》
2005年第6期49-50,共2页
Metrology & Measurement Technology
关键词
任务计算机
分布电容
自激干扰
精度
mission computer
distributed capacitance
self-excitation interference
precision
