空气式静电放电规律研究和理论建模

空气静电放电(ESD)是一种复杂的气体放电过程并受到很多因素的影响,其中放电电压的大小、极性、电极接近速度和环境湿度都是影响放电的主要因素.利用本课题研制的新型静电放电实验装置,在不同的放电电压、不同极性、不同电极接近速度和不同环境湿度条件下研究了空气ESD的放电特性,重点分析了放电电流峰值与这些因素的关系.建立了能够估算放电参数和被试设备接收的耦合电压之间定量关系的数学模型,可为ESD抗扰度实验的定量分析提供参考.

A Study on the Laws and Theoretical Modeling of Air ESD

The air electrostatic discharge(ESD),which influenced by many factors such as the level and polarity of the discharge voltage,the approaching velocity of the electrode,and the relativity humidity of the air,etc.,is a complicated gas discharge process.Using a new ESD experimental set-up,the characteristics of the air ESD have been investigated at different discharge levels,different polarities,different approaching velocities,and different relativity humidity.The correlations between the factors forenamed and the peak currents have been analyzed.The mathematical models which can describe the current injection and the induced voltages of ESD are obtained by regression method using the peak currents and peak-peak voltages induced on the loop.