Control reference parameter for stance assistance using a passive controlled ankle foot Orthosis - a preliminary study
This paper aims to present a preliminary study of control reference parameters for stance assistance among different subjects and walking speeds using a passive-controlled ankle foot orthosis. Four young male able-bodied subjects with varying body mass indexes (23.842 ± 4.827) walked in three walkin...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2019
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| Online Access: | http://eprints.utm.my/87954/1/DimasAdiputra2019_ControlReferenceParameterforStanceAssistance.pdf |
| _version_ | 1796864544272809984 |
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| author | Adiputra, Dimas Abdul Rahman, Mohd. Azizi Ubaidillah, Ubaidillah Mazlan, Saiful Amri Nazmi, Nurhazimah Shabdin, Muhammad Kashfi Kobayashi, Jun Mohammed Ariff, Mohd. Hatta |
| author_facet | Adiputra, Dimas Abdul Rahman, Mohd. Azizi Ubaidillah, Ubaidillah Mazlan, Saiful Amri Nazmi, Nurhazimah Shabdin, Muhammad Kashfi Kobayashi, Jun Mohammed Ariff, Mohd. Hatta |
| author_sort | Adiputra, Dimas |
| collection | ePrints |
| description | This paper aims to present a preliminary study of control reference parameters for stance assistance among different subjects and walking speeds using a passive-controlled ankle foot orthosis. Four young male able-bodied subjects with varying body mass indexes (23.842 ± 4.827) walked in three walking speeds of 1, 3, and 5 km/h. Two control references, average ankle torque (aMa), and ankle angular velocity (aω), which can be implemented using a magnetorheological brake, were measured. Regression analysis was conducted to identify suitable control references in the three different phases of the stance. The results showed that aω has greater correlation (p) with body mass index and walking speed compared to aMa in the whole stance phase (p1(aω) = 0.666 > p1(aMa) = 0.560, p2(aω) = 0.837 > p2(aMa) = 0.277, and p3(aω) = 0.839 > p3(aMa) = 0.369). The estimation standard error (Se) of the aMa was found to be generally higher than of aω (Se1(aMa) = 2.251 > Se1(aω) = 0.786, Se2(aMa) = 1.236 > Se2(aω) = 0.231, Se3(aMa) = 0.696 < Se3(aω) = 0.755). Future studies should perform aω estimation based on body mass index and walking speed, as suggested by the higher correlation and lower standard error as compared to aMa. The number of subjects and walking speed scenarios should also be increased to reduce the standard error of control reference parameters estimation. |
| first_indexed | 2024-03-05T20:43:29Z |
| format | Article |
| id | utm.eprints-87954 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T20:43:29Z |
| publishDate | 2019 |
| publisher | MDPI AG |
| record_format | dspace |
| spelling | utm.eprints-879542020-11-30T13:37:39Z http://eprints.utm.my/87954/ Control reference parameter for stance assistance using a passive controlled ankle foot Orthosis - a preliminary study Adiputra, Dimas Abdul Rahman, Mohd. Azizi Ubaidillah, Ubaidillah Mazlan, Saiful Amri Nazmi, Nurhazimah Shabdin, Muhammad Kashfi Kobayashi, Jun Mohammed Ariff, Mohd. Hatta TA Engineering (General). Civil engineering (General) This paper aims to present a preliminary study of control reference parameters for stance assistance among different subjects and walking speeds using a passive-controlled ankle foot orthosis. Four young male able-bodied subjects with varying body mass indexes (23.842 ± 4.827) walked in three walking speeds of 1, 3, and 5 km/h. Two control references, average ankle torque (aMa), and ankle angular velocity (aω), which can be implemented using a magnetorheological brake, were measured. Regression analysis was conducted to identify suitable control references in the three different phases of the stance. The results showed that aω has greater correlation (p) with body mass index and walking speed compared to aMa in the whole stance phase (p1(aω) = 0.666 > p1(aMa) = 0.560, p2(aω) = 0.837 > p2(aMa) = 0.277, and p3(aω) = 0.839 > p3(aMa) = 0.369). The estimation standard error (Se) of the aMa was found to be generally higher than of aω (Se1(aMa) = 2.251 > Se1(aω) = 0.786, Se2(aMa) = 1.236 > Se2(aω) = 0.231, Se3(aMa) = 0.696 < Se3(aω) = 0.755). Future studies should perform aω estimation based on body mass index and walking speed, as suggested by the higher correlation and lower standard error as compared to aMa. The number of subjects and walking speed scenarios should also be increased to reduce the standard error of control reference parameters estimation. MDPI AG 2019-10-01 Article PeerReviewed application/pdf en http://eprints.utm.my/87954/1/DimasAdiputra2019_ControlReferenceParameterforStanceAssistance.pdf Adiputra, Dimas and Abdul Rahman, Mohd. Azizi and Ubaidillah, Ubaidillah and Mazlan, Saiful Amri and Nazmi, Nurhazimah and Shabdin, Muhammad Kashfi and Kobayashi, Jun and Mohammed Ariff, Mohd. Hatta (2019) Control reference parameter for stance assistance using a passive controlled ankle foot Orthosis - a preliminary study. Applied Sciences (Switzerland), 9 (20). pp. 1-13. ISSN 2076-3417 http://dx.doi.org/10.3390/app9204416 DOI:10.3390/app9204416 |
| spellingShingle | TA Engineering (General). Civil engineering (General) Adiputra, Dimas Abdul Rahman, Mohd. Azizi Ubaidillah, Ubaidillah Mazlan, Saiful Amri Nazmi, Nurhazimah Shabdin, Muhammad Kashfi Kobayashi, Jun Mohammed Ariff, Mohd. Hatta Control reference parameter for stance assistance using a passive controlled ankle foot Orthosis - a preliminary study |
| title | Control reference parameter for stance assistance using a passive controlled ankle foot Orthosis - a preliminary study |
| title_full | Control reference parameter for stance assistance using a passive controlled ankle foot Orthosis - a preliminary study |
| title_fullStr | Control reference parameter for stance assistance using a passive controlled ankle foot Orthosis - a preliminary study |
| title_full_unstemmed | Control reference parameter for stance assistance using a passive controlled ankle foot Orthosis - a preliminary study |
| title_short | Control reference parameter for stance assistance using a passive controlled ankle foot Orthosis - a preliminary study |
| title_sort | control reference parameter for stance assistance using a passive controlled ankle foot orthosis a preliminary study |
| topic | TA Engineering (General). Civil engineering (General) |
| url | http://eprints.utm.my/87954/1/DimasAdiputra2019_ControlReferenceParameterforStanceAssistance.pdf |
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