UTILIZATION OF INERTIAL MEASUREMENT UNIT SENSORS AND OPENSIM FOR RECONSTRUCTING WALKING MOTION

• Main Author: Falih, Muhammad
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/86478
• Institution: Institut Teknologi Bandung

Continuous human motion analysis allows for the detection of diseases and their complications, aiding in treatment decision-making. One tool in the field of biomechanics that can be used is the Inertial Measurement Unit (IMU). IMUs can measure rotational angles, angular velocity, linear acceleration, temperature, and, in some cases, magnetic fields, which provide information for human motion analysis. This study aims to reconstruct walking motion in the OpenSim software using three IMU sensors. The study involved 5 subjects aged 18-59 years who were not injured and had no foot abnormalities. The subjects performed walking movements on a treadmill. Markers were placed on the subjects using a 19-marker Helen Hayes Lower configuration. The study used 8 Optitrack PrimeX 13 cameras and 3 IMU sensors. This study takes data from only one subject which will be processed and analyzed using OpenSim software. Data processing and RMSE calculations were performed in this study. The RMSE value between the knee joint angles from the IMU sensor and OptiTrack was 4.56°. Three IMU sensors were not sufficient to reconstruct walking motion in the OpenSim software. The results obtained in OpenSim also did not accurately represent walking motion and walking kinematic parameters.