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Design of a control system for a knee rehabilitation orthosis using a recovery status

A design of a proposed control system for a knee rehabilitation orthosis is shown in this work. The system is being designed for the first stages of rehabilitation. It comprehends two steps: a recovery evaluation and a regular session. Using the sensors integrated on device, the proposed control system could estimate patient position and force status. Additionally, as the regular rehabilitation session is performed, pain estimation is also measured as safety condition based on variations of the skin conductance. The control strategy based on tacit learning scheme generates set points increments accordingly to patients' progress. Further experimentation with the proposed device is needed to prove the efficiency of this and other strategies.