System and method for realizing order analysis of a rotating shaft by adopting visual composite position sensing stripes

An order analysis, rotating shaft technology, applied in the direction of using optical devices, mechanical bearing testing, mechanical component testing, etc., can solve problems such as difficult to obtain signals, three-dimensional vibration signals cannot be directly obtained, etc., to achieve high measurement efficiency and low cost. , cost saving effect
CN113758695AActive Publication Date: 2021-12-07FUZHOU UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
FUZHOU UNIV
Publication Date
2021-12-07

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Abstract

Provided are a system and a method for realizing order analysis of a rotating shaft by adopting visual composite position sensing stripes. Artificial composite position sensing stripes are used as a three-dimensional vibration sensor and a rotating angular displacement sensor, and can be printed by a common printer and adhered to the periphery of the surface of the shaft. A high-speed camera is adopted as a detector, an image sequence of the composite position sensing stripes is obtained, and time-domain three-dimensional vibration and rotation angular displacement signals can be obtained at the same time through a proposed image processing algorithm. Therefore, simultaneous measurement of the three-dimensional displacement and the rotation angle is realized, and the system and the method are suitable for order analysis. Compared with a traditional system based on three eddy current sensors and one rotation angle sensor, the system has the advantage that the efficiency and robustness of the system are improved. Therefore, the provided composite position sensing stripe and vision-based system can be used for rotating shaft state monitoring and fault detection in practical engineering application.
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Description

technical field

[0001] The invention belongs to the technical fields of machine vision and vibration measurement, and in particular relates to a system and method for state monitoring and fault diagnosis of rotating machinery by using visual composite position sense fringes to realize rotation axis order analysis. Background technique

[0002] The speed up and down of the rotating shaft leads to obvious non-stationary changes in the speed and vibration signals, which brings great difficulties to the fault diagnosis of rotating machinery. Shaft vibration signals contain important information for condition monitoring and fault diagnosis of rotating machinery. However, rotating machinery always operates at variable speeds, which brings great difficulties to signal analysis using stationary signal analysis methods. In response to this problem, researchers developed order analysis, which has become one of the effective methods for fault diagnosis of bearings, gearboxes, and shaf...

Claims

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