Study On Time-frequency Characteristics And Immunity Test Method Of Air-ESD

For air-type electrostatic discharge,the discharge results are mainly dependent on the external ionization conditions,electrode material,gap length,and discharge voltage,but the discharge process is obviously subject to atmospheric pressure conditions(air temperature,pressure,pressure).These factors are uncontrollable under natural conditions,and the key point in the actual experimental process is to control and master their repetitive characteristics.The distribution of radiation field produced by electrostatic discharge is still in its infancy at home and abroad,especially the air-type electrostatic discharge,therefore the process is more complicated.At present,there is no uniform standard for detecting the radiation field.The team uses a new ESD test system to test the discharge current waveform under different external conditions.It is found that these factors have a great influence on the experimental results of discharge current.According to the formation mechanism of these factors,the analysis and study are carried out,the experimental test method is improved.In this paper,we use circuit model and microelectronics to analyze the formation mechanism of electrostatic discharge and the relationship between various physical factors in the process of electrostatic discharge.The circuit model can be used to analyze the relationship between voltage and current produced by electrostatic discharge,but it is only an idealized model.The actual electrostatic discharge process,especially the air-type electrostatic discharge,is also affected by many factors,so it is necessary to consider the generation process of the discharge current during the electrostatic discharge process,which can be explained by using the theory of retention and the theory of retention.The S-domain model based on human-body metal model is used to simulate and analyze the radiation field produced by electrostatic discharge,and its general energy distribution characteristics are obtained.Finally,a new improved math model is proposed,which can be used as a reference for the effect of electrode moving velocity.