The simulation analysis of response about electronic module caused by Electromagnetic Pulse disturbance

To study the effects of a typical circuit under Electromagnetic Pulse (EMP) interference and research the methods of susceptibility forecasting with system identification theory. A base unit circuit is chose to simulation with circuit simulation software PSPICE. The input interference changed, the output pulse response is also different. According to system identification theory, a set of energy coupling circuit model established by input and output data. By changing the parameters of interference voltage, compare the fitting of model output and output of simulation experiments. The applicability of the model is tested by arbitrary interference. The results show that the peak and the trend of model output waveform can approximate the actual output; the larger magnitude of the parameters changes, the lower the fit. To a certain extent, this approach reflect the sensitivity of the circuit to the pulse interference, which lay the foundation to explore new method for predicting sensitivity of the circuit electromagnetic pulse effect.