Multi-level Parameter Identification Approach

In the practical forging system, many unknown parameters differ greatly in magnitude and have different influences on the dynamic response when the system runs under different working conditions, rendering parameter identification difficult. This chapter develops a multi-level identification method for alleviating this difficulty. It divides the complex forging process into many sub-processes according to the process knowledge. Since each sub-process has simpler dynamic behavior and less unknown parameters than the original process, this renders parameter identification in each sub-process easier than that in the whole process. Both simulations and experiments demonstrate and test the effectiveness of the presented method.

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