714 実稼働TPAにおける寄与分離精度評価指標について

概要

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In this study, an accuracy evaluation index for running transfer path analysis (TPA) employing principal component regression method was considered and the reliability was verified. To evaluate the TPA accuracy, the consistency of response signals in which the calculated response signal by the TPA was compared with the measured response signal was used frequently until now. Also, the condition number that indicates the inverse matrix condition applied in the principal regression analysis was employed in some cases. In addition to these accuracy evaluation methods for running TPA, correlated principal component number (CPCN), that indicates the number of vibration mode correlating with the response signal generated at the running test, was proposed. The reliabilities of these accuracy evaluation methods were verified through simulations. As results, the conventional two methods (consistency method and condition number) could not evaluate the accuracy well. However, CPCN index could indicate the frequency bands where the TPA accuracy was high or low. Consequently, the new index was found to be a suitable index for accuracy evaluation of running TPA.
一般社団法人日本機械学会の論文
2011-09-05