Noise Characterization and Treatment of Non-Gaussian Noise in Transient Waveform Analysis 860542

Automotive design engineers involved in reducing the susceptibility of their designs to electrical transients and suppressing any transients conducted due to switching processes in the device find their job made difficult by the lack of any specification or uniform test methods for characterizing transient waveforms. Transient waveforms obtained from the same source vary randomly, possibly due to differences in the operating and actuating conditions. Instrumentation error can also be modeled as an additive noise in the observed signal. A technique is presented in this paper to obtain a time domain difference equation model for the transients when the additive noise present in the acquired waveforms can be modeled as a non-Gaussian process.