Human postural strategies in balance maintenance are the results of the complex control action played by the Central Nervous System (CNS). Literature underlined that such strategies become more evident when external perturbations challenge the stance. In this study, a new model of balance maintenance under support base movement perturbation is formulated. A sliding mode approach is employed to simulate the aforementioned strategies in stabilizing a double inverted pendulum, used to describe the mechanics of the bipedal human stance. Control parameters are then optimized in order to reproduce the measured center of mass (COM) displacement in the anterior-posterior direction. Such parameters seem to be useful to distinguish different postural strategies employed by different subjects. Moreover, electromyographic data are employed to effectively support the goodness of the model.
Description of Postural Strategies through a Variable Structure Control / Tigrini, A.; Mengarelli, A.; Cardarelli, S.; Strazza, A.; Di Nardo, F.; Fioretti, S.; Verdini, F.. - STAMPA. - 2019:(2019), pp. 4113-4116. (Intervento presentato al convegno 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2019 tenutosi a deu nel 2019) [10.1109/EMBC.2019.8857461].
Description of Postural Strategies through a Variable Structure Control
Tigrini A.
Writing – Review & Editing
;Mengarelli A.Investigation
;Cardarelli S.Conceptualization
;Strazza A.Membro del Collaboration Group
;Di Nardo F.Membro del Collaboration Group
;Fioretti S.Supervision
;Verdini F.Conceptualization
2019-01-01
Abstract
Human postural strategies in balance maintenance are the results of the complex control action played by the Central Nervous System (CNS). Literature underlined that such strategies become more evident when external perturbations challenge the stance. In this study, a new model of balance maintenance under support base movement perturbation is formulated. A sliding mode approach is employed to simulate the aforementioned strategies in stabilizing a double inverted pendulum, used to describe the mechanics of the bipedal human stance. Control parameters are then optimized in order to reproduce the measured center of mass (COM) displacement in the anterior-posterior direction. Such parameters seem to be useful to distinguish different postural strategies employed by different subjects. Moreover, electromyographic data are employed to effectively support the goodness of the model.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
