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Award ID contains: 1805896

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  1. Inertial measurement units (IMUs) are an alternative to traditional optical motion capture systems that allow for data collection outside the lab and continuous monitoring for daily activities. In this study, a non-linear least squares optimization was used to convert IMU measurements into joint kinematics. The optimization calculates joint angles simultaneously over all time frames by optimizing B-spline nodes, without integrating any IMU measurements. This approach enables an accurate solution that works well with noisy experimental IMU data since integration errors are eliminated. 
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  2. Inertial measurement units (IMUs) could provide an attractive alternative to video motion capture systems for measuring walking in a non-laboratory setting. This study applied an optimization method to an 18-DOF lower body model to convert synthetic IMU data into corresponding joint angles. 
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