Selection of sensor location for structural system identification using degree of freedom-based reduction method *

Structural system identification method matches numerical model and real model with experimental sensor data. In this study, measured modal data is applied for finite element mode-based system identification. Due to lack of number of sensors, degree of freedom-reduction method is used to revise full model. When revising finite element model by restored responses, selection of sensor location is important. Method for selection of sensor location will be introduced and verified. Numerical examples demonstrate that the proposed method improves the accuracy and efficiency when solving structural system identification problems.