Abstract
Moving force identification (MFI) is an important inverse problem in the field of structural health monitoring (SHM). However, reasonable signal features of moving forces are rarely considered in the existing MFI methods. Based on the redundant concatenated dictionary and weighted-norm regularization method, a hybrid method is proposed for MFI in this study. The redundant dictionary consists of both trigonometric functions and rectangular functions used for matching the harmonic and impact signal features of unknown moving forces. The weighted-norm regularization method is introduced for formulation of MFI equation, so that the signal features of moving forces can be accurately extracted. In order to assess the accuracy and the feasibility of the proposed method, an experiment based on Ship-to-Shore (STS) crane has been made and the results were discussed.
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