飞机静电放电刷静电放电特性的试验研究  

Test research on electrostatic discharging characteristic of aircraft static discharger

作　　者：张靖 司晓亮 仇善良 李志宝 段泽民 ZHANG Jing;SI Xiaoliang;QIU Shanliang;LI Zhibao;DUAN Zemin(Department of Integrated Avionics,AVIC The First Aircraft Institute,Shanghai 200000,China;Anhui Provincial Aircraft Lightning Protection Laboratory,Hefei 230031,China;Aviation Key Laboratory of Science and Technology on High Intensity Electromagnetic Environment Protection,Hefei 230031,China;School of Electric Engineering and Automation,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]中航工业第一飞机设计研究院综合航电所,上海200000 [2]安徽省飞机雷电防护省级实验室,安徽合肥230031 [3]强电磁环境防护技术航空科技重点实验室,安徽合肥230031 [4]合肥工业大学电气与自动化工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2018年第1期40-44,70,共6页Journal of Hefei University of Technology：Natural Science

基　　金：中航工业技术创新基金资助项目(2014A00367R)

摘　　要：静电沉积威胁飞机飞行安全,静电放电刷是泄放飞机静电的重要器件。文章设计了飞机静电放电刷静电放电特性试验系统,研究了某型飞机静电放电刷的静电泄放特性。结果表明:静电放电刷的静电泄放存在阈值现象,仅当施加电压高于放电阈值时,才可观测到明显的放电电流,且电压-电流关系可由抛物线曲线描述;对受试放电刷,负极性阈值电压为21.91kV,正极性的阈值电压为25.12kV,并在施加40kV负极性电压下,放电电流达到20.99μA,满足静电泄放对放电电流的要求。此外,通过测量静电放电的噪声电压波形,分析获得了受试静电放电刷的射频噪声特性,发现受试放电刷的放电脉冲间隔为1~2μs,单次脉宽为0.1~0.2μs,噪声频谱主要分布于1 MHz以内,且频谱强度变化减弱较为平稳。研究结果可为飞机静电放电刷设计、试验及鉴定提供有益参考。Electrostatic precipitation is one of the major threats to aircraft flight safety.As an important protective device,static discharger is used to release electrostatic and reduce hazard.The electrostatic discharge testing system of static discharger was designed and established,and the discharging characteristic of an aircraft static discharger was researched.The results indicate that there is threshold effect for the electrostatic release of static discharger,the discharging current is considerable only when the applied voltage is larger than the threshold voltage,and the voltage-current relationship can be described by parabolic function.The negative polarity threshold is 21.91 kV,and the positive threshold is 25.12 kV for the discharger under test.The discharging current is 20.99μA when applying negative polarity voltage of 40 kV,indicating that the discharger under test satisfies the requirement of discharging current.Besides,radio frequency noise characteristic of the discharger under test was also analyzed and obtained by measuring the noise voltage of electrostatic discharge.With the noise voltage measurement,it is found that the pulse separation is about 1-2μs,the pulse width is about 0.1-0.2μs,the noise spectrum spreads mainly below 1 MHz,and the spectrum intensity decreases smoothly.The investigation result can provide useful references for the design,test and qualification of aircraft static discharger.

关 键 词：飞机静电 静电放电刷 电晕放电 射频噪声 静电放电 飞机静电防护 

分 类 号：V216.5[航空宇航科学与技术—航空宇航推进理论与工程] TM863[电气工程—高电压与绝缘技术]