Multithread Active Vision-based Modal Analysis Using Multiple Vibration Distribution Synthesis method

Previously, we proposed a multithread active vision system that can virtually realize multiple pan-tilt tracking cameras by rapidly switching the viewpoints for the vibration measurement. However, the measurement rate of observation points is low and the time density of measurement data is not always sufficient. In this study, we propose a multiple vibration distribution synthesis method for vibration analysis that increases the sampling rate of each observation point in the multithread active vision system. The proposed method is verified through a high-order modal analysis for a 4-m long truss-structure bridge model, which was impossible to perform in the previous method.