Adaptive Control of Foot Orthosis
Major problems of the Foot Drop treatment are expensive and complex solutions. This work
presents the performance of a new inexpensive method named as Semi-Active Ankle Foot
Orthosis (SAAFO). The concept of this approach is to use inexpensive sensors to detect foot step
movement. The signals from the sensors afterwards will be fed to a control system of SAAFO in
runtime for a smooth foot movement of a drop foot patient while walking. Different sensors have
been studied in detail along with comparison to the proposed sensor system and mechanical
design. The signals from the sensors are used to detect different phases of human walking. These
sensors are placed at different positions on an orthosis and their signals are studied in detail.
Experiments have been done in different conditions to get a realistic picture either this assembly
can be implemented commercially. Signals are plotted and discussed yielding that the human
walking phases can be easily and accurately detected using inexpensive sensor assembly.
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