通过实验对电火花加工中方波脉冲电源放电时,间隙电压、电流随时间的发展过程及其伏安特性进行了研究,并用非线性电路分析方法解释了产生火花放电间隙维持电压的原因及条件。 Through the experiment, the development process and the volt-ampere characteristics of the gap voltage and current with time were studied by using the square wave pulse power discharge in EDM. The causes and conditions for the generation of the spark gap voltage were explained by nonlinear circuit analysis .