Abstract
This study investigates an identification method for physical parameters and vibration modes of beams. A robot arm is used to swing the beam, and input-output data of swinging trials are measured. In this method, physical parameters of the beams are identified by least-square method, and vibration modes are derived by finite element method (FEM), iteratively. Vibration modes of the beam are necessary to estimate actual physical parameters such as stiffness, El, and density, pA, of the beam. Temporary physical parameters are applied to assume temporary vibration modes for the initial condition of iterative calculation. Reliability of proposed identification method is confirmed by numerical simulations.
