Virtual prototyping of a semi-active transfemoral prosthetic leg
نویسندگان
چکیده
منابع مشابه
Virtual prototyping of a semi-active transfemoral prosthetic leg.
This article presents a virtual prototyping study of a semi-active lower limb prosthesis to improve the functionality of an amputee during prosthesis-environment interaction for level ground walking. Articulated ankle-foot prosthesis and a single-axis semi-active prosthetic knee with active and passive operating modes were considered. Data for level ground walking were collected using a photogr...
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Powered prosthetic legs could significantly improve mobility for lower-limb amputees, but the performance and clinical viability of these devices are currently limited by complex control systems that independently control different joints and time periods of the gait cycle. Recent efforts have been made to address these challenges with a unifying control model used by recent bipedal robots, in ...
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Polycentric knees are frequently used in transfemoral prostheses because they provide added stability in stance phase and relative ankle dorsiflexion in swing phase. Despite this relative ankle dorsiflexion, patients still complain of inadequate toe clearance even with polycentric knees. We hypothesize that active ankle dorsiflexion via a knee-ankle coupling provides more toe clearance than pro...
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The C-Leg (Otto Bock, Duderstadt, Germany) is a microprocessor-controlled prosthetic knee that may enhance amputee gait. This intrasubject randomized study compared the gait biomechanics of transfemoral amputees wearing the C-Leg with those wearing a common noncomputerized prosthesis, the Mauch SNS (Ossur, Reykjavik, Iceland). After subjects had a 3-month acclimation period with each prosthetic...
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We discuss open loop control development and simulation results for a semiactive above-knee prosthesis. The control signal consists of two hydraulic valve settings. These valves control a rotary actuator that provides torque to the prosthetic knee. We develop open loop control using biogeography-based optimization (BBO), which is a recently developed evolutionary algorithm, and gradient descent...
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ژورنال
عنوان ژورنال: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine
سال: 2015
ISSN: 0954-4119,2041-3033
DOI: 10.1177/0954411915581653