Hybrid orthosis system with a variable hip coupling mechanism
Existing reciprocating gait orthoses, to help restore gait to individuals with paraplegia, have a fixed 1:1 hip flexion/extension coupling ratios (FECR), limiting stride length and gait speed. The purpose of this study was to develop a hip reciprocating mechanism for the hybrid orthosis system that...
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| Veröffentlicht in: | 2006 International Conference of the IEEE Engineering in Medicine and Biology Society 2006, Vol.2006, p.2928-2931 |
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| container_title | 2006 International Conference of the IEEE Engineering in Medicine and Biology Society |
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| creator | To, C.S. Kobetic, R. Triolo, R.J. |
| description | Existing reciprocating gait orthoses, to help restore gait to individuals with paraplegia, have a fixed 1:1 hip flexion/extension coupling ratios (FECR), limiting stride length and gait speed. The purpose of this study was to develop a hip reciprocating mechanism for the hybrid orthosis system that is capable of variable hip FECR. The design of the new variable hip reciprocating mechanism incorporates a hydraulic system which utilizes solenoid valves to control coupling between cylinders linked to each hip joint of the orthosis. A specific set of valves are pulsed to achieve continual variable hip coupling. It was shown that piston velocity was inversely proportional to pulse width and also dependent on pulsing frequency. Internal losses in the hydraulic hip reciprocating mechanism occur primarily in the cylinders. Feedback control will be achieved with a dual layer gait event detector consisting of a fuzzy inference system and a set of supervisory rules |
| doi_str_mv | 10.1109/IEMBS.2006.259631 |
| format | Article |
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The purpose of this study was to develop a hip reciprocating mechanism for the hybrid orthosis system that is capable of variable hip FECR. The design of the new variable hip reciprocating mechanism incorporates a hydraulic system which utilizes solenoid valves to control coupling between cylinders linked to each hip joint of the orthosis. A specific set of valves are pulsed to achieve continual variable hip coupling. It was shown that piston velocity was inversely proportional to pulse width and also dependent on pulsing frequency. Internal losses in the hydraulic hip reciprocating mechanism occur primarily in the cylinders. Feedback control will be achieved with a dual layer gait event detector consisting of a fuzzy inference system and a set of supervisory rules</description><identifier>ISSN: 1557-170X</identifier><identifier>ISBN: 9781424400324</identifier><identifier>ISBN: 1424400325</identifier><identifier>DOI: 10.1109/IEMBS.2006.259631</identifier><identifier>PMID: 17946991</identifier><language>eng</language><publisher>United States: IEEE</publisher><subject>Biomechanical Phenomena ; Biomedical Engineering ; Braces ; Control systems ; Equipment Design ; Feedback ; Feedback control ; Frequency ; Gait - physiology ; Hip ; Hip Joint - physiopathology ; hip reciprocating mechanism ; Humans ; Hybrid orthosis system ; Hydraulic systems ; Orthotic Devices ; Orthotics ; Paraplegia - physiopathology ; Paraplegia - rehabilitation ; Paraplegia - therapy ; Pistons ; reciprocating gait orthosis ; Solenoids ; Space vector pulse width modulation ; Valves</subject><ispartof>2006 International Conference of the IEEE Engineering in Medicine and Biology Society, 2006, Vol.2006, p.2928-2931</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/4462410$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>309,310,776,780,785,786,2052,4036,4037,27902,54895</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/4462410$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/17946991$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>To, C.S.</creatorcontrib><creatorcontrib>Kobetic, R.</creatorcontrib><creatorcontrib>Triolo, R.J.</creatorcontrib><title>Hybrid orthosis system with a variable hip coupling mechanism</title><title>2006 International Conference of the IEEE Engineering in Medicine and Biology Society</title><addtitle>IEMBS</addtitle><addtitle>Conf Proc IEEE Eng Med Biol Soc</addtitle><description>Existing reciprocating gait orthoses, to help restore gait to individuals with paraplegia, have a fixed 1:1 hip flexion/extension coupling ratios (FECR), limiting stride length and gait speed. The purpose of this study was to develop a hip reciprocating mechanism for the hybrid orthosis system that is capable of variable hip FECR. The design of the new variable hip reciprocating mechanism incorporates a hydraulic system which utilizes solenoid valves to control coupling between cylinders linked to each hip joint of the orthosis. A specific set of valves are pulsed to achieve continual variable hip coupling. It was shown that piston velocity was inversely proportional to pulse width and also dependent on pulsing frequency. Internal losses in the hydraulic hip reciprocating mechanism occur primarily in the cylinders. Feedback control will be achieved with a dual layer gait event detector consisting of a fuzzy inference system and a set of supervisory rules</description><subject>Biomechanical Phenomena</subject><subject>Biomedical Engineering</subject><subject>Braces</subject><subject>Control systems</subject><subject>Equipment Design</subject><subject>Feedback</subject><subject>Feedback control</subject><subject>Frequency</subject><subject>Gait - physiology</subject><subject>Hip</subject><subject>Hip Joint - physiopathology</subject><subject>hip reciprocating mechanism</subject><subject>Humans</subject><subject>Hybrid orthosis system</subject><subject>Hydraulic systems</subject><subject>Orthotic Devices</subject><subject>Orthotics</subject><subject>Paraplegia - physiopathology</subject><subject>Paraplegia - rehabilitation</subject><subject>Paraplegia - therapy</subject><subject>Pistons</subject><subject>reciprocating gait orthosis</subject><subject>Solenoids</subject><subject>Space vector pulse width modulation</subject><subject>Valves</subject><issn>1557-170X</issn><isbn>9781424400324</isbn><isbn>1424400325</isbn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><sourceid>EIF</sourceid><recordid>eNo9j0FLwzAYhgMqTuZ-gAiSk7fOfOmXpDl40DHdYOJBBW8lyTIbadfatMr-vYVN38t7eB5eeAm5ADYFYPpmOX-6f5lyxuSUCy1TOCITrTJAjshYyvGYnIEQKgHF3kdkEuMnG5LqAfNTMgKlUWoNZ-R2sbNtWNO67Yo6hkjjLna-oj-hK6ih36YNxpaeFqGhru6bMmw_aOVdYbYhVufkZGPK6CeHHpO3h_nrbJGsnh-Xs7tVEjhglzjBndQGNCi0GTfcO8EYplZ4dC7LuEYrnUfBN0KgAOkk40oqBUbAxpp0TK73u01bf_U-dnkVovNlaba-7mMus1RzKcUgXh3E3lZ-nTdtqEy7y_8OD8LlXgje-3-MKDkCS38Bt4phjA</recordid><startdate>2006</startdate><enddate>2006</enddate><creator>To, C.S.</creator><creator>Kobetic, R.</creator><creator>Triolo, R.J.</creator><general>IEEE</general><scope>6IE</scope><scope>6IH</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIO</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>7X8</scope></search><sort><creationdate>2006</creationdate><title>Hybrid orthosis system with a variable hip coupling mechanism</title><author>To, C.S. ; Kobetic, R. ; Triolo, R.J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i214t-c52c69a19174b82a2ec50043b5e4cc88294b6ce452f554516c60276771a51fba3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2006</creationdate><topic>Biomechanical Phenomena</topic><topic>Biomedical Engineering</topic><topic>Braces</topic><topic>Control systems</topic><topic>Equipment Design</topic><topic>Feedback</topic><topic>Feedback control</topic><topic>Frequency</topic><topic>Gait - physiology</topic><topic>Hip</topic><topic>Hip Joint - physiopathology</topic><topic>hip reciprocating mechanism</topic><topic>Humans</topic><topic>Hybrid orthosis system</topic><topic>Hydraulic systems</topic><topic>Orthotic Devices</topic><topic>Orthotics</topic><topic>Paraplegia - physiopathology</topic><topic>Paraplegia - rehabilitation</topic><topic>Paraplegia - therapy</topic><topic>Pistons</topic><topic>reciprocating gait orthosis</topic><topic>Solenoids</topic><topic>Space vector pulse width modulation</topic><topic>Valves</topic><toplevel>online_resources</toplevel><creatorcontrib>To, C.S.</creatorcontrib><creatorcontrib>Kobetic, R.</creatorcontrib><creatorcontrib>Triolo, R.J.</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan (POP) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP) 1998-present</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>MEDLINE - Academic</collection><jtitle>2006 International Conference of the IEEE Engineering in Medicine and Biology Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>To, C.S.</au><au>Kobetic, R.</au><au>Triolo, R.J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Hybrid orthosis system with a variable hip coupling mechanism</atitle><jtitle>2006 International Conference of the IEEE Engineering in Medicine and Biology Society</jtitle><stitle>IEMBS</stitle><addtitle>Conf Proc IEEE Eng Med Biol Soc</addtitle><date>2006</date><risdate>2006</risdate><volume>2006</volume><spage>2928</spage><epage>2931</epage><pages>2928-2931</pages><issn>1557-170X</issn><isbn>9781424400324</isbn><isbn>1424400325</isbn><abstract>Existing reciprocating gait orthoses, to help restore gait to individuals with paraplegia, have a fixed 1:1 hip flexion/extension coupling ratios (FECR), limiting stride length and gait speed. The purpose of this study was to develop a hip reciprocating mechanism for the hybrid orthosis system that is capable of variable hip FECR. The design of the new variable hip reciprocating mechanism incorporates a hydraulic system which utilizes solenoid valves to control coupling between cylinders linked to each hip joint of the orthosis. A specific set of valves are pulsed to achieve continual variable hip coupling. It was shown that piston velocity was inversely proportional to pulse width and also dependent on pulsing frequency. Internal losses in the hydraulic hip reciprocating mechanism occur primarily in the cylinders. Feedback control will be achieved with a dual layer gait event detector consisting of a fuzzy inference system and a set of supervisory rules</abstract><cop>United States</cop><pub>IEEE</pub><pmid>17946991</pmid><doi>10.1109/IEMBS.2006.259631</doi><tpages>4</tpages></addata></record> |
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| ispartof | 2006 International Conference of the IEEE Engineering in Medicine and Biology Society, 2006, Vol.2006, p.2928-2931 |
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| language | eng |
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| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Biomechanical Phenomena Biomedical Engineering Braces Control systems Equipment Design Feedback Feedback control Frequency Gait - physiology Hip Hip Joint - physiopathology hip reciprocating mechanism Humans Hybrid orthosis system Hydraulic systems Orthotic Devices Orthotics Paraplegia - physiopathology Paraplegia - rehabilitation Paraplegia - therapy Pistons reciprocating gait orthosis Solenoids Space vector pulse width modulation Valves |
| title | Hybrid orthosis system with a variable hip coupling mechanism |
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