Low repeatibility investigation of parameters measurement in non-conduct electrostatic discharge

Several factors of gas pressure, electrode velocity to the target, temperature, relative humidity, etc., can be measured based on our new experiment and research system. Analysis and discussion was conducted with our newly invented measurement system on low repeatability in discharge parameters measurement, which is affected strongly by velocity of electrode to the target and gas pressure variation. The range of electrostatic discharge generator displace is 10cm-40cm. Electrode velocity moving to the target of Δν=14cm/s result in peak current change of ΔI≈0.5A. Gas pressure variation of Δp=0.06 atm create current peak value variation of ΔI≈0.5A, shown drastic change of discharge current peak value and discharge waveform. Initial validation was given on strong impact of electrode velocity to the target and air pressure on discharge parameters. A brief analysis was provided for possible effect mechanism of electrode velocity and air pressure on discharge parameters in short gap electrostatic discharge.