A kind of multi-sensor fusion dynamic balance analysis method, system, equipment, medium

Abstract

The invention belongs to the technical field of signal processing, and discloses a multi-sensor fusion dynamic balance analysis method, system, equipment, and medium. The multi-sensor fusion dynamic balance analysis method includes: collecting original vibrations including horizontal and vertical directions from industrial sites signal; determine the signal source to be analyzed through the amplitude and similarity information; decompose the original signal with the help of target empirical mode decomposition; determine the signal to be analyzed by blind source separation according to the similarity between the decomposed result and the original signal; use the target blind source The separation method realizes the decomposition of the signal; combines the results of blind source analysis to identify dynamic balance components; calculates the one-octave frequency amplitude and phase information of the blind source separation signal where the dynamic balance component is located through Fourier transform; uses the influence coefficient method to carry out dynamic balance weighting Calculate and obtain the dynamic balance calculation result. The invention can effectively remove the interference of other fault information mixed in the dynamic balance analysis frequency, essentially realize the dynamic balance of the equipment, and prolong the service time of the equipment after the dynamic balance.

Description

technical field [0001] The invention belongs to the technical field of signal processing, and in particular relates to a multi-sensor fusion dynamic balance analysis method, system, equipment and medium. Background technique [0002] In recent years, large-scale rotating machinery and equipment are developing rapidly in the direction of high efficiency, high power, high precision and automation. As a key component of rotating equipment, the operating state of the rotor is directly related to the system performance and service life of the rotating equipment. Poor assembly, the influence of alternating loads, thermal deformation and other factors make the rotor inevitably produce various faults during long-term operation, which in turn causes mechanical equipment vibration, noise, and even mechanism damage. Unbalance, misalignment, oil film whirling, etc. are common failure forms of rotating machinery. Among them, the inertial force and moment caused by the unbalance of the ...

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Problems solved by technology

[0006] (1) In practical applications, not only unbalance faults are related to the fundamental frequency component, mechanical looseness, friction, oil film whirl, pipeline excitation, etc. all affect the fundamental frequency, and blind dynamic balance analysis cannot fundamentally solve the problem of rotor failure. System vibration problems, further causing compound faults such as rotor rubbing and foundation loosening

[0007] (2) In the on-site dynamic balance technology, although the dynamic balance reduces the vibration of the system, the vibration will still increase after a short period of operation because the root cause of the vibration has not been found.

[0010] (2) The response results of signal sources to rotor faults are not the same. A single signal source and underdetermined analysis methods cannot comprehensively cover all fault information. It has always been an important research direction to realize the separation of coupling faults by underdetermined signal sources.

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