pyOMA.core.PostProcessingTools.compare_modes

pyOMA.core.PostProcessingTools.compare_modes(f_a, d_a, phi_a, f_b, d_b, phi_b, **kwargs)

Compares two sets of modes (set a and set b) by first pairing them and then displaying statistics on the identified pairs and a full MAC matrix for manual assessment.

Parameters:

• f_a (np.ndarray) – Arrays holding the natural frequencies of both sets of modes. The dimension (number of modes) of both sets can be different.

• f_b (np.ndarray) – Arrays holding the natural frequencies of both sets of modes. The dimension (number of modes) of both sets can be different.

• d_a (np.ndarray) – Arrays holding the damping ratios in percent of both sets of modes. The dimension (number of modes) of both sets can be different.

• d_b (np.ndarray) – Arrays holding the damping ratios in percent of both sets of modes. The dimension (number of modes) of both sets can be different.

• phi_a (np.ndarray) – Arrays holding the mode shapes of both sets of modes. The first dimension is the number of channels, that must match in both arrays.

• phi_b (np.ndarray) – Arrays holding the mode shapes of both sets of modes. The first dimension is the number of channels, that must match in both arrays.

• kwargs – Additional kwargs are passed to pair_modes

Returns:

• inds_a, inds_b (np.ndarray) – Arrays holding the indices of paired modes

• unp_a, unp_b (np.ndarray) – Arrays holding the indices of modes that could not be paired