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Modal analysis method and device of driving belt

A modal analysis and transmission belt technology, which is applied in the field of transmission belt analysis, can solve the problems of unfavorable transmission belt modal analysis, failure to measure transmission belt vibration shape and damping ratio, and inability to obtain transmission belt modal parameters, so as to achieve accurate modal analysis.

Inactive Publication Date: 2018-03-09
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Problems solved by technology

[0005] The invention provides a modal analysis method and device of a transmission belt, which solves the problem that the peak detection method cannot measure the vibration shape and damping ratio of each mode of the transmission belt, so that the complete modal parameters of the transmission belt cannot be obtained, which is not conducive to the transmission belt Technical Issues of Modal Analysis

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  • Modal analysis method and device of driving belt
  • Modal analysis method and device of driving belt
  • Modal analysis method and device of driving belt

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Embodiment Construction

[0040] The embodiment of the present invention provides a modal analysis method and device for a transmission belt, which is used to solve the problem that the vibration shape and damping ratio of each mode of the transmission belt cannot be measured by the peak detection method, so that the complete modal parameters of the transmission belt cannot be obtained. Technical issues that are not conducive to the modal analysis of transmission belts.

[0041] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordina...

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Abstract

The invention discloses a modal analysis method and device of a driving belt. The modal analysis method and device are used for solving the technical problem that according to a peak value detection method, the vibration types and the damping ratios of all modals of the driving belt cannot be measured, and therefore complete modal parameters of the driving belt cannot be obtained, which is not beneficial to modal analysis of the driving belt. By ceaselessly obtaining acceleration signals of the driving belt in the vibration direction, characteristics when the driving belt is vibrated can be obtained, a power spectrum density matrix is constructed through the acceleration signals, according to a singular value decomposition method, the power spectrum density matrix is decomposed into a series of power spectrum density functions of a single-degree-of-freedom system, the modal parameters of the vibration types, the damping ratios and the like of the driving belt can be obtained so that the modal analysis of the driving belt can be more accurate, which is beneficial to dynamic structural design of the driving belt and fault diagnosis in the running process.

Description

technical field [0001] The invention relates to the technical field of transmission belt analysis, in particular to a modal analysis method and device for a transmission belt. Background technique [0002] Belt drives are the most commonly used transmissions in mechanical engineering. It is widely used in locomotive engines, fans, water pumps, etc. Compared with chain drive, gear drive, worm drive and other transmission forms, belt drive has its unique advantages. As a kind of flexible component transmission, it has the characteristics of simple structure, stable transmission, no noise, and the ability to buffer and absorb vibration. It can transmit high power over a long distance with the fewest components, and has the advantages of low cost, no lubrication, easy replacement and maintenance, etc. . However, the drive belt also produces elastic slip and vibration during transmission. During the operation of the conveyor belt, many factors will cause the transmission belt...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 杨路
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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