FFT and Frequency Analysis
About These Articles
Signal-processing foundations for diagnostics, including time waveforms, frequency components, modulation and resolution.
Most articles below are in Japanese. Japanese-language articles link directly to their Japanese pages.
The Motor as a Sensor: Principles of Electrical Signature Analysis (Japanese)
June 7, 2026
How motor air-gap interactions, amplitude modulation and FFT analysis help reveal changes in equipment condition.