Fuzzy logic control for active ankle foot orthosis

This paper presents the control design of an ankle foot orthosis for the drop foot gait. In this project a fuzzy controller is developed to control the symmetry in gait. The gait patterns are monitored through National Instrument´s data acquisition system which is interfaced with a gyro sensor. A self-adaptive fuzzy logic controller along with a fuzzy rule base is developed to provide corrective actuation to the defective foot. The sensor data is then fed as an input to the fuzzy logic controller which generates the control signal for the actuator in real time.