Abstract
Measurement of floor reaction force is effective method in sports engineering and biomechanics. However force plate has some problem, such as large scale, and it can't continuous measurement and disturbs natural gait. In this research, we use 3-axis sensor to solve these problems and consider the measurement method of three directional components of floor reaction force. It is necessary to determine the identification coefficient because 3 -axis sensor can't determine directly floor reaction force. So we determine the identification coefficient using multiple regression analysis. As the result, the coefficient that was determined by identification experimentation is good precise. In walking experiment, there was an error between waveform of force plate and waveform of 3-axis sensor, but the characteristic of waveform is appeared.
