Fabien Clanché

Guillaume Mornieux

Karine Duclos

Michel Pascual

Guillaume Burgat

Design of experiments for the evaluation of the human exoskeleton interaction in the context of small data collections

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Design of experiments for the evaluation of the human -exoskeleton interaction in the context of small data collections

A multimodal measurement protocol:

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Context and General Objectives:

ThyssenKrupp company which manufactures steering columns have undertaken a systemic approach including managers and operators in order to better support the transformations of the work to respond to the health and safety issues facing these new practices. In this subsidiary, experiments are in progress on load-bearing exoskeleton devices designed to relieve operators of some of the most difficult tasks.

A scientific study, jointly conducted with the University of Lorraine, on workstations located at the end of the production line should make it possible to identify the effects of such assistance systems on the biomechanical and psychological risk factors of the operators. Coût cardiaque moyen (% augmentation vs. FCrepos)

Data process workflow:

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  Comparison of subjective survey of perceived exertion (with/without exoskeleton -CR10, echelle de Borg) • Evaluation of the upper and the lower body activity with Electromyographic system (Delsys) • Kinematic measures with Motion Capture system (Optitrack) • Posture analysis with force plate (AMTI) • Heart rate during the exertion (Garmin) The mock-up of the workstation in a laboratory context: Reproduction of the 1086 line • Simulation of production rate • The level of noise and temperature • Personal protective equipment Design of experiments: • Six real operators (N=6) • 3 females and 3 males that represents different somatotypes and heights • 8 experiments with and without exoskeleton • 1/2 day of measurements per voluntary • Evaluation of the manipulation of steering depending the height of the rack • Evaluation of a co-manipulation of the racks F. Clanché 1 , G. Mornieux 1 , K. Duclos 1 , G. Gauchard 1 , M. Pascual 2 , G. Burgat 2 1 Université de Lorraine / EA 3450 DevAH « Développement, Adaptation et Handicap » 2 Thyssenkrupp Presta France SAS

  extraction of biomarkers during 2 phases pick and place of the steering columns extraction of biomarkers during 2 phases pick and place of the racks • Signals synchronization and data transformation • Biomarkers of biomechanics : angle, speed, stability and precision of upper body segments (quaternions data process on Matlab) • Biomarkers of neuromuscular : EMG signal processing (RMS value of each phase) • Biomarkers of human postural control (statokinesigram and center of pressure analysis) • Mapping of the different conditions of work tasks depending of the place of steering column in the rack d'exposition posturale par partie du corps vs. criticité ergonomique rouge & jaune