A Portable System for In-Situ Re-Calibration of Force Platforms: Experimental Validation (original) (raw)

A portable system has been developed to enable in-situ re-calibration of force platforms (FPs) aimed at improving measurement accuracy for ground-reaction force (GRF) and center of pressure (COP) in movement analysis. This system includes a calibration device, a data-acquisition procedure, and a refined algorithm, which estimates the six-by-six calibration matrix to compensate for systematic errors due to changes in FP sensitivity over time. Experimental validation demonstrates that the new system significantly enhances accuracy, addressing common errors in kinetic and energetic variable calculations.