一种风洞天平信号电磁干扰补偿方法  

An EMI Compensation Method for Balance Signal in Wind Tunnel

作　　者：成垒 段丕轩[1] 康洪铭[1] 陈丹 Cheng Lei;Duan Pixuan;Kang Hongming;Chen Dan(Low Speed Aerodynamics Institute,China Aerodynamics Research&Development Center,Mianyang 621000,China)

机构地区：[1]中国空气动力研究与发展中心低速空气动力研究所,四川绵阳621000

出　　处：《兵工自动化》2021年第3期32-35,共4页Ordnance Industry Automation

摘　　要：为解决风洞中的大功率伺服系统在运行时对弱小天平信号产生较强的电磁干扰,严重影响数据的精度和可靠性的问题,提出一种在时域上对信号进行干扰补偿的方法。通过在天平上引入旁路电桥,用于敏感干扰信号,使用减除法补偿天平信号,并模拟风洞试验环境,开展伺服驱动器和大功率电机的干扰补偿实验。结果表明:该方法能显著减弱电磁干扰的影响,达到提高数据精度和可靠性的目的。To solve the problem that the electromagnetic interference(EMI)on balance signal when high power servo system is on work in wind tunnel,which will seriously affect the precision and reliability of the data,an EMI compensation method in time domain was studied.Introduce a by-pass circuit bridge to sense the interference signal,then compensate the balance signal by subtraction method.Simulate wind tunnel test environment,and carry out the inference compensation test for servo driver and high power motor.The results show that the method can reduce the EMI effectively,which can meet the demands of improving the precision and reliability of the data.

关 键 词：风洞 天平 电磁干扰 信号补偿 

分 类 号：TN911.4[电子电信—通信与信息系统]