Vibration means the state of an object moving repetitively back/forward, right/ left or up/down and is generally expressed by Frequency, Displacement, Velocity, and Acceleration. These 4 elements are generally denoted as F, Ｄ,Ｖ,Ａ. This is illustrated simply as a spring and mass. When the mass is pulled down from the start position and released, the mass moves just like the vibration waveform shown in the graph on the right.
- Frequency means the number of times that vibrating object generates a repetitive motion in 1 second.
- Displacement means the amplitude (distance) between the peaks of vibration.
- Unit：μm, mm
- Velocity means the changing rate of displacement (D) to time
- Unit：mm/s, cm/s
- Acceleration means the changing rate of velocity(V) to time
- Unit：m/s2, g
- Effective function to detect abnormal bearing noise. 2kHz～15kHz ﬁltering to acceleration waveform can remove noise for waveform analysis.