What are the characteristics of dynamic signals and static signals?

Dynamic signals refer to rapidly changing signals, such as shaft vibration and tile vibration. A rapidly changing signal refers to a signal that shows a sudden or drastic change in time domain (or spatial domain), corresponding to high-frequency information in frequency domain.

Features: amplitude and even direction change with time, signal changes dramatically, and information is high frequency.

A signal that does not change with time is called a static signal.

Features: stable, amplitude and direction generally do not change with time.