System and method for vibration severity assessment independently of vibration frequency

摘要

The method includes receiving a real-time signal containing information pertaining to amplitude and frequency of vibrations of a machine component over a frequency spectrum including a first analysis bandwidth and a second analysis bandwidth, and using the real-time signal to determine values indicative of the severity of vibrations occurring at frequencies in the first analysis bandwidth in a first unit of one of displacement, velocity, and acceleration, and determine values indicative of the severity of vibrations occurring at frequencies in the second analysis bandwidth in a second unit of one of displacement, velocity and acceleration, the second unit being different from the first unit; and associating the determined values in a common unit representing comparable severity of vibrations in the first analysis bandwidth and the second analysis bandwidth.

主权项

1. A system for providing a vibration severity indication of a machine component, the system comprising:
a vibration sensor positioned to sense the vibration of the machine component, providing a real-time signal containing information pertaining to amplitude and frequency of vibrations of the component over a spectrum including at least a first analysis bandwidth and a second analysis bandwidth during use, and an electronic circuit connectable to receive the real-time signal from the vibration sensor, the electronic circuit being configured to perform each one of
a function to determine
values indicative of the severity of vibrations occurring at frequencies in the first analysis bandwidth in a first unit of one of displacement, velocity, and acceleration, andvalues indicative of the severity of vibrations occurring at frequencies in the second analysis bandwidth in a second unit of one of displacement, velocity and acceleration, the second unit being different from the first unit;a function to associate the values of both the first analysis bandwidth and the second analysis bandwidth to values in a synthetic unit representing comparable severity of vibrations in the first analysis bandwidth and the second analysis bandwidth, anda function to generate a signal indicative of a given level of the severity of vibrations being reached based on the association.