Impedance Control Strategies for Enhancing Sloped and Level Walking Capabilities for Individuals with Transfemoral Amputation Using a Powered Multi-Joint Prosthesis.
Introduction: Powered prostheses are a promising new technology that may help people with lower-limb loss improve their ability to perform locomotion tasks. Developing active prostheses requires robust design methodologies and intelligent controllers to appropriately provide assistance to the user f...
| Published in: | Military Medicine Vol. 185; pp. 490 - 500 |
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| Main Authors: | , , , , |
| Format: | equations & formulas pictorial research tables/charts Journal Article |
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Oxford University Press / USA
2020 Supplement
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=141923064&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 141923064 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00264075 4DV jtl: Military Medicine issn: 00264075 maglogo: N pubinfo: dt: 2020 Supplement vid: 185 pid: 622 pub: Oxford University Press / USA artinfo: ui: 141923064 141923064 NLM32074296 141923064 10.1093/milmed/usz229 NLM32074296 141923064 ppf: 490 ppct: 10 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Impedance Control Strategies for Enhancing Sloped and Level Walking Capabilities for Individuals with Transfemoral Amputation Using a Powered Multi-Joint Prosthesis. aug: au: Bhakta, Krishan Camargo, Jonathan Kunapuli, Pratik Childers, Lee Young, Aaron affil: Woodruff School of Mechanical Engineering, College of Engineering, Georgia Institute of Technology, Atlanta, GA USA sug: subj: Walking Physiology Amputation Psychosocial Factors Joint Prosthesis Standards Amputees Psychosocial Factors Electric Impedance Therapeutic Use Prosthesis Design Standards Kinematics Amputees Amputation Adverse Effects Human Validation Studies Comparative Studies Evaluation Research Multicenter Studies ab: Introduction: Powered prostheses are a promising new technology that may help people with lower-limb loss improve their ability to perform locomotion tasks. Developing active prostheses requires robust design methodologies and intelligent controllers to appropriately provide assistance to the user for varied tasks in different environments. The purpose of this study was to validate an impedance control strategy for a powered knee and ankle prosthesis using an embedded sensor suite of encoders and a six-axis load cell that would aid an individual in performing common locomotion tasks, such as level walking and ascending/descending slopes.Materials and Methods: Three amputees walked on a treadmill and four amputees walked on a ramp circuit to test whether a dual powered knee and ankle prosthesis could generate appropriate device joint kinematics across users.Results: Investigators found that tuning 2-3 subject-specific parameters per ambulation mode was necessary to render individualized assistance. Furthermore, the kinematic profiles demonstrate invariance to walking speeds ranging from 0.63 to 1.07 m/s and incline/decline angles ranging from 7.8° to 14°.Conclusion: This work presents a strategy that requires minimal tuning for a powered knee & ankle prosthesis that scales across a nominal range of both walking speeds and ramp slopes. pubtype: Academic Journal doctype: equations & formulas pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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