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Active Above Knee Prosthesis

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Active Above Knee Prosthesis

Active Above Knee Prosthesis Book
Author : Zlata Jelacic,Remzo Dedic,Haris Dindo
Publisher : Academic Press
Release : 2020-06-16
ISBN : 0128186844
Language : En, Es, Fr & De

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Book Description :

Active Above-Knee Prosthesis: A Guide to a Smart Prosthetic Leg presents original research and development results, providing a firsthand overview of idea generation and prototype production. The book gives insights into the problem of stair ascent for people with above-knee amputation and offers a solution in the form of a physical prototype of an active above-knee prosthesis with an actuated ankle. The book's authors have developed and tested a physical prototype of an active above-knee prosthesis, giving anyone who is researching and designing prosthetic devices firsthand knowledge on how to build on, and continue with, work that has already been done. Presents state-of-the-art technology in powered prosthetics Helps readers evaluate design options and create new developments Provides guidance on the evolution of advanced prosthetic design

Design and Evaluation of a Biomimetic Agonist antagonist Active Knee Prosthesis

Design and Evaluation of a Biomimetic Agonist antagonist Active Knee Prosthesis Book
Author : Ernesto Carlos Martinez Villalpando,Massachusetts Institute of Technology. Department of Architecture. Program in Media Arts and Sciences
Publisher : Unknown
Release : 2012
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

The loss of a limb is extremely debilitating. Unfortunately, today's assistive technologies are still far from providing fully functional artificial limb replacements. Although lower extremity prostheses are currently better able to give assistance than their upper-extremity counterparts, important locomotion problems still remain for leg amputees. Instability, gait asymmetry, decreased walking speeds and high metabolic energy costs are some of the main challenges requiring the development of a new kind of prosthetic device. These challenges point to the need for highly versatile, fully integrated lower-extremity powered prostheses that can replicate the biological behavior of the intact human leg. This thesis presents the design and evaluation of a novel biomimetic active knee prosthesis capable of emulating intact knee biomechanics during level-ground walking. The knee design is motivated by a mono-articular prosthetic knee model comprised of a variable damper and two series elastic clutch units spanning the knee joint. The powered knee system is comprised of two series-elastic actuators positioned in parallel in an agonist-antagonist configuration. This investigation hypothesizes that the biomimetic active-knee prosthesis, with a variable impedance control, can improve unilateral transfemoral amputee locomotion in level-ground walking, reducing the metabolic cost of walking at selfselected speeds. To evaluate this hypothesis, a preliminary study investigated the clinical impact of the active knee prosthesis on the metabolic cost of walking of four unilateral above-knee amputees. This preliminary study compared the antagonistic active knee prosthesis with subjects' prescribed knee prostheses. The subjects' prescribed prostheses encompass four of the leading prosthetic knee technologies commercially available, including passive and electronically controlled variable-damping prosthetic systems. Use of the novel biomimetic active knee prosthesis resulted in a metabolic cost reduction for all four subjects by an average of 5.8%. Kinematic and kinetic analyses indicate that the active knee can increase self-selected walking speed in addition to reducing upper body vertical displacement during walking by an average of 16%. The results of this investigation report for the first time a metabolic cost reduction when walking with a prosthetic system comprised of an electrically powered active knee and passive foot-ankle prostheses, as compared to walking with a conventional transfemoral prosthesis. With this work I aim to advance the field of biomechatronics, contributing to the development of integral assistive technologies that adapt to the needs of the physically challenged.

Intelligent Controls for a Semi active Hydraulic Prosthetic Knee

Intelligent Controls for a Semi active Hydraulic Prosthetic Knee Book
Author : Timothy Allen Wilmot
Publisher : Unknown
Release : 2011
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

We discuss open loop control development and simulation results for a semi-active 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. We use gradient descent to show that the control generated by BBO is locally optimal. This research contributes to the field of evolutionary algorithms by demonstrating that BBO is successful at finding optimal solutions to complex, real-world, nonlinear, time varying control problems. The research contributes to the field of prosthetics by showing that it is possible to find effective open loop control signals for a newly proposed semi-active hydraulic knee prosthesis. The control algorithm provides knee angle tracking with an RMS error of 7.9 degrees, and thigh angle tracking with an RMS error of 4.7 degrees. Robustness tests show that the BBO control solution is affected very little by disturbances added during the simulation. However, the open loop control is very sensitive to the initial conditions. So a closed loop control is needed to mitigate the effects of varying initial conditions. We implement a proportional, integral, derivative (PID) controller for the prosthesis and show that it is not a sufficient form of closed loop control. Instead, we implement artificial neural networks (ANNs) as the mechanism for closed loop control. We show that ANNs can greatly improve performance when noise and disturbance cause high tracking errors, thus reducing the risk of stumbles and falls. We also show that ANNs are able to improve average performance by as much as 8% over open loop control. We also discuss embedded system implementation with a microcontroller and associated hardware and software.

An Active Multi mode Above Knee Prosthesis Controller

An Active Multi mode Above Knee Prosthesis Controller Book
Author : Donald Lee Grimes
Publisher : Unknown
Release : 1979
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download An Active Multi mode Above Knee Prosthesis Controller book written by Donald Lee Grimes, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Orthotics Prosthetics Mobility Aids

Orthotics  Prosthetics    Mobility Aids Book
Author : Ronald L. Gordner
Publisher : Unknown
Release : 1993
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Orthotics Prosthetics Mobility Aids book written by Ronald L. Gordner, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Energy Regeneration and Its Application to Active Above knee Prostheses

Energy Regeneration and Its Application to Active Above knee Prostheses Book
Author : Bhartendu Seth
Publisher : Unknown
Release : 1987
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Energy Regeneration and Its Application to Active Above knee Prostheses book written by Bhartendu Seth, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Design of a hybrid passive active prosthesis for above knee amputees

Design of a hybrid passive active prosthesis for above knee amputees Book
Author : Bram Gilbert Antoon Lambrecht
Publisher : Unknown
Release : 2008
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Design of a hybrid passive active prosthesis for above knee amputees book written by Bram Gilbert Antoon Lambrecht, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

An Evaluation of an Above knee Prosthesis to Facilitate Rapid Gait

An Evaluation of an Above knee Prosthesis to Facilitate Rapid Gait Book
Author : Kimberly Ann Lovasik
Publisher : Unknown
Release : 1993
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download An Evaluation of an Above knee Prosthesis to Facilitate Rapid Gait book written by Kimberly Ann Lovasik, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Design of Test Bench Apparatus and Preliminary Weight Reduction Strategy for an Active Knee Prosthesis

Design of Test Bench Apparatus and Preliminary Weight Reduction Strategy for an Active Knee Prosthesis Book
Author : Jacky Homing Lau,Massachusetts Institute of Technology. Department of Mechanical Engineering
Publisher : Unknown
Release : 2011
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

This thesis presents the design and structural analyses of an experimental test bench for the characterization of an active biomimetic knee prosthesis currently being developed by the Biomechatronics research group at MIT Media Laboratory. Finite element analysis (FEA) is conducted to determine the maximum stress and material deflections of three principle components of the test bench and to verify their structural integrity. In addition, FEA is performed on the chassis of the active knee prosthesis when subjected to the expected loads associated with walking. The simulation results verify that the active prosthetic do not expect structural failure during level ground walking trials with above knee amputee participants. Finally, an empirical weight reduction strategy for the active knee is proposed and analyzed. This strategy aims to reduce distal leg mass which contributes to the overall energetic demands of amputee walking. FEA on the modified active knee prosthesis chassis validate the strategy modifications while maintaining the original design feature constraints.

Lower Extremity Amputations for Arterial Insufficiency

Lower Extremity Amputations for Arterial Insufficiency Book
Author : Richard Warren,Eugene E. Record
Publisher : Unknown
Release : 1967
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Lower Extremity Amputations for Arterial Insufficiency book written by Richard Warren,Eugene E. Record, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Smart Structures and Materials 2004

Smart Structures and Materials 2004 Book
Author : Yoseph Bar-Cohen
Publisher : Society of Photo Optical
Release : 2004
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Proceedings of SPIE present the original research papers presented at SPIE conferences and other high-quality conferences in the broad-ranging fields of optics and photonics. These books provide prompt access to the latest innovations in research and technology in their respective fields. Proceedings of SPIE are among the most cited references in patent literature.

Immediate Postsurgical Prosthetics in the Management of Lower Extremity Amputees

Immediate Postsurgical Prosthetics in the Management of Lower Extremity Amputees Book
Author : Ernest M. Burgess,Joseph E. Traub,A. Bennett Wilson
Publisher : Unknown
Release : 1967
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Immediate Postsurgical Prosthetics in the Management of Lower Extremity Amputees book written by Ernest M. Burgess,Joseph E. Traub,A. Bennett Wilson, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Control Aspects of Biomedical Engineering

Control Aspects of Biomedical Engineering Book
Author : Maciej Nałęcz
Publisher : Pergamon
Release : 1987
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

A collection of papers giving up-to-date accounts of modern developments in the control aspects of all branches of biomedical engineering. Produced under the auspices of IFAC, the volume is a balanced and detailed work, and is compulsive reading for anyone involved in the research, development and application of biomedical engineering.

Annual Northeast Bioengineering Conference

Annual Northeast Bioengineering Conference Book
Author : Anonim
Publisher : Unknown
Release : 1980
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Annual Northeast Bioengineering Conference book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Excerpta Medica

Excerpta Medica Book
Author : Anonim
Publisher : Unknown
Release : 1991
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Monthly. References and abstracts to international journal literature covering the field of pure biophysics and bioengineering, including model theory, physical analysis, and the application of physical laws to the living organism. Classified arrangement of entries. Occasional diagrams. Subject, author indexes.

Orthopaedic Appliances Atlas Artificial limbs

Orthopaedic Appliances Atlas  Artificial limbs Book
Author : Anonim
Publisher : Unknown
Release : 1952
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Orthopaedic Appliances Atlas Artificial limbs book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Proceedings

Proceedings Book
Author : Anonim
Publisher : Unknown
Release : 1975
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Proceedings book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.