Structural damage identification method based on ridge estimation and L curve method
A technology for structural damage and identification methods, applied in computing, instrumentation, electrical and digital data processing, etc.
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[0057] The purpose of the present invention is to propose a new method for solving the strain energy sensitivity damage equation, and provide an improved strategy to improve the accuracy of damage identification. This method can not only deal with the ill-conditioned problem of the damage equation, but also improve the accuracy of damage identification through the correction strategy for the deviation of the estimated value. Since the Ridge Estimation (RE) method can better deal with ill-conditioned problems, and the L-curve method can better deal with the selection of optimization parameters, the present invention uses a combination of Ridge Estimation and L-curve method to solve the ill-conditioned problem of the damage equation and The selection of optimization parameters. For specific implementation ideas, please refer to figure 1 ,From figure 1It can be seen that this method mainly uses the modal strain energy sensitivity damage equation and the ridge estimation method ...
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