Research Article
Evaluating the Effect of Modelling Errors in Load Identification Using Classical Identification Methods
Table 2
Error standard deviation for different levels of uncertainty and for three selected points in time. All are based on the force estimate in DOF 5.
| | Uncertainties introduced | Method 1 | Method 2 | | Error std (%) | Error std (%) | | a | b | c | a | b | c |
| | Natural frequencies | 3.19 | 2.99 | 2.80 | 5.79 | 4.16 | 3.74 | | Natural frequencies and damping ratios | 4.08 | 3.01 | 2.79 | 7.44 | 4.22 | 3.74 | | Natural frequencies, damping ratios, and mode shapes | 75.7 | 66.2 | 52.8 | 7.71 | 4.70 | 4.13 |
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