FIELD: diagnostic technique.
SUBSTANCE: invention relates to diagnostic technology and can be used to diagnose the technical condition of automotive generators. The invention is a method for diagnosing automotive generators by the output voltage spectrum, consisting in obtaining and analyzing output voltage waveforms using an oscilloscope, characterized in that the voltage waveform taken from the power output of the generator is decomposed using a fast Fourier transform into harmonic components, and when analyzing the output voltage spectrum, a database is used in which a correspondence is established between the presence and number of fractional harmonics of the output voltage and a specific malfunction of the automotive generator.
EFFECT: possibility of recognizing specific malfunctions of automotive generators directly on the car based on spectral analysis of the output voltage.
1 cl, 14 dwg
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