CONTROL METHOD FOR A POWERED KNEE ANKLE FOOT ORTHOSIS

A powered KAFO device includes an electronic control system that provides an enhanced operation to better approximate a human gait cycle for enhanced mobility assistance. Multiple gait cycles of stance substate control and swing substate control are implemented to perform walking. During stance cont...

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Bibliographische Detailangaben
Hauptverfasser:	MURRAY, Spencer A, FARRIS, Ryan J, DALLEY, Skyler A
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BANDAGES, DRESSINGS OR ABSORBENT PADS CHAMBERS PROVIDED WITH MANIPULATION DEVICES DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HAND TOOLS HUMAN NECESSITIES HYGIENE MANIPULATORS MEDICAL OR VETERINARY SCIENCE ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PERFORMING OPERATIONS PORTABLE POWER-DRIVEN TOOLS PROSTHESES TRANSPORTING TREATMENT OR PROTECTION OF EYES OR EARS
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Beschreibung
Zusammenfassung:	A powered KAFO device includes an electronic control system that provides an enhanced operation to better approximate a human gait cycle for enhanced mobility assistance. Multiple gait cycles of stance substate control and swing substate control are implemented to perform walking. During stance control, the control system measures an error between a desired and an actual knee joint component angle, and operates the actuator assembly of the powered mobility assistance device to control the knee joint component to stabilize the knee joint component. During swing control, the electronic control system measures an error between a desired and an actual knee swing trajectory, and operates the actuator assembly to control the knee joint component to adjust toward the desired swing knee trajectory. The gait cycle further may include a neutral substate that transitions from the stance substate to the swing substate, in which actuator assembly releases the knee joint component.