Multi-sensor fusion dynamic balance analysis method, system, equipment and 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 comprises the steps of collecting original vibration signals in horizontal and vertical directions from an industrial field; determining a to-be-analyzed signal source through the amplitude and similarity information; decomposing the original signals by means of target empirical mode decomposition; determining a blind source separation signal to be analyzed according to the similarity between the decomposed results and the original signals; carrying out signal decomposition by adopting a target blind source separation method; identifying dynamic balance components in combination with a blind source analysis result; calculating a frequency multiplication amplitude and phase information of the blind source separation signal where the dynamic balance component is located through Fourier transform; and carrying out dynamic balance weight calculation by adopting an influence coefficient method to obtain a dynamic balance calculation result. According to the method, other fault information interference doped in the dynamic balance analysis frequency can be effectively removed, the dynamic balance of the equipment is essentially realized, and the service time of the equipment after dynamic balance is prolonged.

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 mechanical equipment is 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 the long-term operation process, which in turn causes mechanical equipment vibration, noise, and even mechanism damage. Unbalance, misalignment, oil film whirl, etc. are common fault forms of rotating machinery. Among them, the inertial force and moment produced by the unbalanced r...

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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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