Model Predictive Control for Human-Centred Lower Limb Robotic Assistance

نویسندگان

چکیده

Loss of mobility and/or balance resulting from neural trauma is a critical public health issue. Robotic exoskeletons hold great potential for rehabilitation and assisted movement. However, the synergy robot operation with human effort remains problem. In particular, optimal assist-as-needed (AAN) control unresolved given pathological variance among patients. We introduce model predictive (MPC) architecture lower limb that achieves on-the-fly transitions between modes assistance. The implements fuzzy logic algorithm (FLA) to map key assistance based on involvement. Three are utilised: passive, relaxed dominant; active-assist, cooperation task; safety, in case resistance robot. Electromyography (EMG) signals further employed predict torque. EMG output used by MPC trajectory following FLA decision making. Experimental validation using 1-DOF knee exoskeleton demonstrates controller tracking sinusoidal relaxed, assistive, resistive operational modes. Results demonstrate rapid appropriate transfers modes, satisfactory AAN performance each case, offering new level human-robot assist rehabilitation.

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ژورنال

عنوان ژورنال: IEEE transactions on medical robotics and bionics

سال: 2021

ISSN: ['2576-3202']

DOI: https://doi.org/10.1109/tmrb.2021.3105141