Calculate one m amplitude by measur

Calculate one m amplitude by measuring two adjacent maximum and two-stage maximum vibration values in one oscillation period :1 and 2 m =(1) 2)(4) the measurements were repeated three times and the mean value was taken as the measurement of the amplitude vibration signal. It is worth noting that if the amplitude of several oscillation periods is measured continuously and varies according to certain laws, it can generally be changed by (2) The periodic interference signal of the oscillation period is calculated and the true oscillation frequency should be calculated by formula (4) of the frequency of the amplitude envelope. Of course, there is also the possibility that the oscillation period calculation equation (2) is correct, but it adjusts the low frequency weak interference signal or the actual vibration signal is a combination of the two and so on. But in this case, multiple vibration sensors of the same type can be installed in different positions of the equipment under test, and can be judged correctly by using sensor signal fusion technology.