小型・軽量なIMUを用いた歩行時膝関節角度推定の精度検証

抄録

This study aimed to verify the accuracy of knee joint angle estimation using a small and lightweight IMU. We calculated the root mean squared error and the correlation coefficient at the knee joint angle around each axis of the knee joint angle estimated by the IMU and the complementary filter and the knee joint angle estimated by the point cluster technique. As a result, a high correlation (>0.95) was found only in the flexion and extension angles. It was shown that the coarse movement in the flexion and extension direction can be measured even if the IMU is not fixed properly.