Strain real-time monitoring method under optimized layout of measuring points in key parts of mechanical parts
A technology for mechanical parts and key parts, which is applied in the field of real-time monitoring of the surface strain of mechanical parts and can solve problems such as the fact that the actual strain of mechanical parts cannot be accurately reflected.
Active Publication Date: 2021-05-11
DALIAN UNIV OF TECH
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[0002] At present, the real-time monitoring scheme for the strain of key parts of mechanical parts is usually to install strain sensors directly at the position to be measured, and then monitor the strain status of key parts in real time during the working process of mechanical parts; for the prediction of strain at positions where strain sensors cannot be directly installed , when the measuring points are arranged, most of them adopt the scheme of equidistant arrangement, which cannot accurately reflect the actual strain of mechanical parts
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[0045] The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings and technical solutions.
[0046] figure 1 Optimize layout model for surface survey points
[0047] Strain monitoring method for key parts of mechanical parts, by arranging strain sensors on the surface of mechanical parts to obtain real-time strain data at each measuring point, receiving strain data through a wireless gateway and transmitting it to the computer, realizing real-time strain monitoring of key parts of mechanical parts Monitoring; specifically including the optimal layout model of surface measuring points, the distance distribution model of measuring points and the indirect prediction model of equivalent principal strain;
[0048] Ⅰ. Optimal layout model of surface measuring points
[0049] For the strain prediction of key parts of mechanical parts, it is impossible to measure all parts due to the working conditions ...
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The invention provides a strain real-time monitoring method under the optimized layout of measuring points at key parts of mechanical parts, and belongs to the technical field of strain monitoring on the surface of mechanical parts. The strain sensor arranged on the surface of the mechanical part monitors its strain state during the working process, and at the same time predicts the strain state of the position to be predicted based on the strain data of each measuring point obtained by the sensor, so as to realize the real-time monitoring of the strain of the key parts of the mechanical part. Prevent fatigue damage at key weak points of mechanical parts and ensure safe and reliable operation of mechanical equipment.
Description
technical field [0001] The invention relates to a method for real-time monitoring of strain in key parts of mechanical parts, belonging to the technical field of real-time monitoring of surface strain of mechanical parts. Background technique [0002] At present, the real-time monitoring scheme for the strain of key parts of mechanical parts is usually to install strain sensors directly at the position to be measured, and then monitor the strain status of key parts in real time during the working process of mechanical parts; for the prediction of strain at positions where strain sensors cannot be directly installed , When the measuring points are arranged, most of them adopt the scheme of equidistant arrangement, which cannot accurately reflect the actual strain of mechanical parts. [0003] Based on the above situation, the present invention designs a star-shaped measuring point optimization layout model, which can save the number of strain sensors and at the same time moni...
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IPC IPC(8): G06F30/20G06F30/17G01B21/32
CPCG01B21/32G06F30/17G06F30/20
Inventor 霍军周张伟徐兆辉孟智超
Owner DALIAN UNIV OF TECH