Vxi Measurement And Control Technology, Strong Electromagnetic Interference Environment

In the experiment of Electrothermal-Chemical Gun (ETC),a large parameters are needed to be measured ,but because of the restriction of traditional instruments ,we can't complete the complicated test mission.The VXIbus is generally accepted as the excellent automatic test system in the 21th century. It has good operability, high data transfers rate and lower price .Comparing with traditional automatic test system ,VXIbus has enormous potential.However, with testing complicating and diversification of the environment, the voltage is high, discharge in the electric current greatly, produce the strong electromagnetic noise.This interfering signal coupling enters the testing circuit whit electric field and magnetic field,causing the instruments can't to control and sample data accurately,so it influence the experiment process seriously.This discourse analyzed the occurred of interference and spread path in experiment of ETC and studied many shielding technique, using to insulate the feasibility of the VXIbus applied in the experiment of Electric. We also attempted to establish a test system baseing on VXIbus.