METHOD FOR MULTIFUNCTIONAL DIAGNOSTICS OF BEARING ASSEMBLIES AND DEVICE FOR ITS IMPLEMENTATION IN INTEGRAL VERSION Russian patent published in 2020 - IPC G01M13/04 

FIELD: metrology.

SUBSTANCE: proposed device enables to measure vibration parameters – vibration speed, vibration acceleration, in two frequency bands, perform digital vibration signal processing using Fast Fourier Transform (FFT) and Goertzel algorithms, calculate the root-mean-square value (RMS) of the vibration signal, analyze the vibration signal in the frequency domain, measure the angular velocity and angular position of the rotating object, measure the heating temperature of the bearing, detect defects at the nucleation stage, perform RMS vibration signal comparison with threshold values of accident and accident, perform temperature comparison of rotating bearing with threshold values of traps and accident, monitor RMS signal on selected harmonics, determine values of modulus of spectral components, calculate ratio of maximum value of HF signal to root-mean-square value, determining frequency of fundamental harmonic FFT with subsequent calculation of spectral density according to Goertzel algorithm at previously determined frequency, signaling current technical condition of bearing.

EFFECT: improving accuracy, compactness of diagnostic device of bearing assemblies in integral design, enlarging functional capabilities of the method determining bearing defects, including arising defects, during operation.

2 cl, 1 dwg