抄録
This study investigate an identification method for physical parameters of golf clubs by golf swing robot by using data of deformation of the club-shaft and input torque in swinging trials. In this method, parameters of the golf club are identified by least-square method. Vibration modes of the club-shaft are necessary to estimate actual physical parameters such as stiffness, El, of the shaft and density of the shaft, pA. However, these vibration modes are not available at the beginning of identification, because these physical parameters, which have not been determined, are required to derive vibration modes. Therefore, temporary vibration modes are assumed for the initial condition of proposed method, and the physical parameters are estimated by iterative calculation between the estimation of physical parameters by using assumed/estimated vibration modes and the estimation of the vibration modes by using estimated physical parameters. Proposed identification method is confirmed by numerical simulation.
