Monitoring workers’ status is crucial to prevent work-related musculoskeletal disorders and to enable a safe human-robot interaction. This is typically achieved relying on muscle activation recordings, commonly performed via wearable electromyographic EMG sensors. However, to properly acquire whole-body muscular status, a large number of sensors is needed. This represents a limitation for a real deployment of wearable acquisition systems, due to cost and wearability constraints. To overcome this problem, we propose a solution to provide a reliable muscles estimation from a limited number of EMG recordings. Our method exploits the covariation patterns between muscles activation to complement the recordings coming from a reduced set of optimally placed sensors, minimizing the estimation uncertainty. Using a dataset of EMG data recorded from 10 subjects, we demonstrate that it is possible to reconstruct the temporal evolution of 10 whole-body muscles with a maximum normalized estimation error of 13%, using only 7 EMG sensors.
Estimation of Whole-Body Muscular Activation from an Optimal Set of Scarce Electromyographic Recordings
Springer Proceedings in Advanced Robotics
International Workshop on Human-Friendly Robotics ; 2022 ; Delft, The Netherlands September 22, 2022 - September 23, 2022
2023-01-02
11 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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