Human Gait Recognition Using Hip, Knee and Ankle Joint Ratios - 26/05/20
pages | 8 |
Iconographies | 10 |
Vidéos | 0 |
Autres | 0 |
Graphical abstract |
Highlights |
• | The human gait was analyzed for healthy and afflicted subjects on level ground. |
• | The ideal human locomotion was attained while integrating the joint angle ratios. |
• | The estimation of joint angle ratios improved the accuracy of the driving system. |
• | Statistical analyses were conducted to determine the significance in joint ratios. |
• | The joint ratios provided the best assistance by compensating the disability. |
Abstract |
The estimation of joint angle ratios for healthy and afflicted subjects in characterizing the human gait has great significance in the development of limb prosthetics. The two dimensional analysis of human gait was performed and the ratio of hip to knee, knee to ankle, hip to ankle as well as the time taken for achieving a gait were determined. The percentage of affliction was computed based on the joint angle ratios and comparison was made with healthy gait. The joint ratios were fed as input to the driving system which comprises of six DC motors for the positioning of knee, hip and ankle during gait. Then different control strategies like P, PI and PID were tested. The t-test and ANOVA analysis were conducted between healthy, afflicted and PID controller to determine the significant difference between their joint angle ratios. The estimation of joint angle ratio improved the accuracy of the control system drive (desired position of knee, hip and ankle motors). The presence of oscillations in the output response was reduced for P and PI controllers. The implementation of PID controller eliminated the presence of peak overshoot and more settling time. Thus the joint angle ratio provides the best possible assistance to the disabled persons by appropriately compensating the affliction.
Le texte complet de cet article est disponible en PDF.Keywords : Gait, Joint angle ratio, PID controller, t-test, ANOVA
Plan
Vol 41 - N° 3
P. 133-140 - juin 2020 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
L’accès au texte intégral de cet article nécessite un abonnement.
Bienvenue sur EM-consulte, la référence des professionnels de santé.
L’achat d’article à l’unité est indisponible à l’heure actuelle.
Déjà abonné à cette revue ?