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Current energy storage and return prosthetic feet only marginally reduce the cost of amputee locomotion compared with basic solid ankle cushioned heel feet, possibly due to their lack of push-off at the end of stance. To the best of our knowledge, a prosthetic ankle that utilizes a hydraulic variable displacement actuator (VDA) to improve push-off performance has not previously been proposed. Therefore,...
Intelligent assistive devices using powered actuators are used to restore the gait patterns of amputees or patients with lower limb pathologies. These devices use feedback systems to drive actuators accurately at the right instances during gait. As such, information about gait phases in real-time is necessary to diagnose and/or to provide feedback to assistive devices. This paper presents a method...
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