Development of a swing estimation method using dynamic model and vibration analysis of torque during swing

Abstract

In the sport of golf, the use of an appropriate club is of paramount importance. Hence, we developed a method to determine the optimal weight of a suitable club for an individual golfer. The ultimate goal of this method is to estimate changes in the swing when the club characteristics are changed and to fit the club to the golfer’s needs. To this end, it is first necessary to study the swing behavior of clubs of different types, based on standard club parameters. This report focuses on the measurement and estimation of the swing behavior of clubs of different weights. The first step of this study was to measure the swing of clubs of different weights and calculate the torque exerted during the swing. Then, power spectral density (PSD) values were obtained by performing fast Fourier transformations (FFT) on the obtained torque data. The PSD values for the different club weights were compared, and based on this comparison, the PSD values were corrected by applying an amplification function. The inverse Fourier transformation was then applied to the corrected PSD values to obtain estimated torque data. Finally, using the estimated torque data and performing forward dynamics calculations, the change in swing behavior was analyzed.