抄録
In order to measure the vibration characteristic of a product, the experiment modal analysis is used well. However, in the method of moving a measuring point, sensor weight affects the frequency response function (FRF) to measure. Therefore, by the conventional method, it was not in agreement by the place which natural frequency measures, and there was a problem that it was difficult to extract mode shape correctly. In this paper, we propose the method of eliminate the influence of sensor mass from the measured FRF for the experiment modal analysis of light weight products, and extracting more exact mode shape. Improvement in a MAC value has been checked because it is adapted in the proposed method. So, the usefulness of the proposed method was shown.
