Magnetic flux leakage testing defect reconstruction method based on improved particle swarm optimization algorithm

A particle swarm optimization and magnetic flux leakage detection technology, applied in neural learning methods, material magnetic variables, biological neural network models, etc., can solve problems such as inability to accurately reconstruct the true contour of defects and trapping in local optimum.
CN104897769AActive Publication Date: 2015-09-09SHANGHAI UNIVERSITY OF ELECTRIC POWER
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI UNIVERSITY OF ELECTRIC POWER
Publication Date
2015-09-09

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Abstract

The invention relates to a magnetic flux leakage testing defect reconstruction method based on an improved particle swarm optimization algorithm. According to the method, self-adaption mutagenic factors are introduced into a particle swarm EPUS-PSO algorithm based on an effective population utilization strategy, thus obtaining the IEPUS-PSO algorithm, and then the IEPUS-PSO algorithm is applied to defect reconstruction in magnetic flux leakage testing. With the improved algorithm, the reconstruction accuracy is improved, the computation time is reduced, and the defect outline can be reconstructed by magnetic flux leakage signals for defects of different sizes.
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Description

technical field

[0001] The present invention relates to a magnetic flux leakage detection technology, in particular to a defect reconstruction method for magnetic flux leakage detection based on an improved efficient population utilization strategy particle swarm optimization (Improved Efficient Population Utilization Strategy for Particle Swarm Optimization, IEPUS-PSO) algorithm. Background technique

[0002] In recent years, with the continuous development of my country's economy and the continuous expansion of industrial scale, electric power production has become a pillar industry of our country. Therefore, the application of non-destructive testing technology in the production and maintenance of power equipment has attracted more and more attention. As the most commonly used detection method in non-destructive testing, magnetic flux leakage testing is widely used in steel, petroleum, petrochemical and other fields. It mainly detects defects such as corrosion, cracks, po...

Claims

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