EVALUATION OF TRANSIENTS IN AUTOMOTIVE ELECTRONIC SYSTEMS

The article deals with transients, or, a pulse type interference, because essentially the authors are dealing with transient phenomena (broad band) which may also have a temporal repetition frequency. Of this interference, the sources generating it inside the vehicle are analyzed, classifying them on the basis of their electrical characteristics, amplitude and wave form as a function of time. Therefore, the methods are described which are used at international standard level and, in particular, by FIAT Auto, to measure this interference and to reproduce it in a standard, repeatable manner for the purpose of evaluating the sensitivity of the various electronic systems to it. Finally, the instuments used by FIAT Auto to carry out these tests are described, explaining the principal considerations which have emerged from the test experience gained up to now.