FIELD: testing engineering.
SUBSTANCE: method comprises exciting free decaying vibration in the system, recording the response of the system, plotting amplitude-time characteristic of the system response , determining the natural frequency of the system from the amplitude-time characteristic, and extracting frequency components with a given cutoff frequencies by means of a band filter. The frequency components are used for determining the logarithmic vibration decrements. The natural frequencies of the system are determined from the peaks of the Fourier amplitude spectrum of the system response. The cutoff frequencies are assumed to be frequencies nearest to the natural frequencies of the system from the right and the left at which the Fourier amplitude spectrum takes a minimum.
EFFECT: enhanced precision.
6 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF SPECTRAL ANALYSIS OF SIGNALS | 1993 |
|
RU2127888C1 |
| METHOD OF CALIBRATING A DIAGNOSTIC SYSTEM FOR ASSESSING TECHNICAL CONDITION OF ROLLING STOCK | 2019 |
|
RU2716374C1 |
| METHOD DETERMINING CONTACT ANGLE IN BALL BEARING AND DEVICE FOR ITS REALIZATION | 1996 |
|
RU2112950C1 |
| DYNAMIC MONITORING OF MOBILE NONLINEAR TECHNICAL SYSTEMS | 2020 |
|
RU2745984C1 |
| METHOD OF DETERMINING ELASTIC-DISSIPATIVE CHARACTERISTICS OF WOOD | 2019 |
|
RU2715222C1 |
| MECHANICAL FILTER FOR PIEZOACCELEROMETRE | 2009 |
|
RU2410704C2 |
| METHOD OF COMPLEX VIBRATION DIAGNOSIS OF ANTIFRICTION BEARINGS AND DEVICE INTENDED FOR ITS REALIZATION | 1996 |
|
RU2104510C1 |
| METHOD FOR DETERMINING OSCILLATION FREQUENCIES OF A MECHANICAL SYSTEM BY USING A ROTATING PENDULUM | 2015 |
|
RU2647513C2 |
| METHOD OF ESTIMATING THE WEAR VALUE OF PLAIN BEARING SLEEVE MADE FROM WOOD | 2019 |
|
RU2738600C1 |
| METHOD TO DETERMINE LOGARITHMIC DECREMENTS OF OSCILLATIONS BY WIDTH OF SYMMETRICAL DETUNE OF RESONANCE | 2013 |
|
RU2531844C1 |
