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Wyszukujesz frazę "gait simulation" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Artificial neural network simulation of lower limb joint angles in normal and impaired human gait
Autorzy:
Błażkiewicz, M.
Wit, A.
Powiązania:
https://bibliotekanauki.pl/articles/306964.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
sztuczna sieć neuronowa
chód człowieka
symulacja chodu
artificial neural network
joint angle
gait simulation
Opis:
Simulating the complexities of lower limb motion can be useful for orthosis or rehabilitation planning. The aim of this study was to develop an artificial neural network (ANN) able to accurately simulate the changes in the angle of the ankle, knee and hip joints during the gait cycle, then to use it to simulate the impact of a restricted range of ankle and hip joint angle changes on the progression of the knee joint angle. Methods: Thirty four young healthy students participated in the study. Gait kinematics data were collected using the Vicon system, then analyzed with an ANN. Results: We developed an ANN able to accurately simulate the progression of joint angles of lower-limb motion; its simulation of the impact of restricted ankle and hip joint angular ranges in the on the knee joint indicate that the braking phase is critical. Conclusions: ANNs offer a useful research method in clinical biomechanics. Further research in this vein should expand our understanding of compensatory functions in the lower limbs.
Źródło:
Acta of Bioengineering and Biomechanics; 2018, 20, 3; 43-49
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamical approach to the diagonal gait synthesis: theory and experiments
Autorzy:
Zielińska, T.
Trojnacki, M.
Powiązania:
https://bibliotekanauki.pl/articles/385059.pdf
Data publikacji:
2009
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
quadruped robot
diagonal gait
postural equilibrium
force distribution
computer simulation
Opis:
The method of two-legged diagonal gait synthesis for the quadruped robot is introduced. The problem of dynamic postural equilibration taking into account the role of compliant feet is solved. The equilibrium conditions are split to the feet attachments points and the points within the feet-end area. In simulation example the slip avoidance condition is tested. Presented method has the meaning for motion synthesis taking into account the robot parameters and - for the design of the feet considering the dynamically stable gaits. The method was proved by using simulations and experiments.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2009, 3, 2; 3-7
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biomechanical characterization of slope walking using musculoskeletal model simulation
Autorzy:
Masayuki, K.
Hata, K.
Kiyama, R.
Maeda, T.
Yone, K.
Powiązania:
https://bibliotekanauki.pl/articles/307044.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
analiza lokomocji
chód
choroba zwyrodnieniowa stawów
układ mięśniowo-szkieletowy
gait analysis
slope walking
osteoarthrosis
joint force
musculoskeletal model simulation
Opis:
Upslope and downslope walking are basic activities necessary for normal daily living in community, and they impose greater joint load on the lower extremities than during level walking. Thus, the purpose of this study was to quantify the resultant and shear forces in the hip and knee joints during slope walking. Methods: Twelve healthy volunteers were evaluated when walking under level and 10° up- and downslope conditions. Three-dimensional gait analysis was conducted using a 7-camera optoelectronic motion analysis system combined with a force plate to measure ground reactive force. Joint forces in the hip and knee joints were estimated using musculoskeletal model simulation. Results: Results showed that the resultant hip force was increased significantly to 117.2% and 126.9%, and the resultant knee force was increased to 133.5% and 144.5% in up- and downslope walking, respectively, compared to that of level walking. Furthermore, increased shear force in the hip and knee joints was noted during both slope walking conditions. Conclusions: This information may be beneficial for therapists advising elderly people or patients with osteoarthrosis on an appropriate gait pattern, gait assistive devices, or orthoses according to their living environment.
Źródło:
Acta of Bioengineering and Biomechanics; 2018, 20, 1; 117-125
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An object-oriented approach to simulating human gait motion based on motion tracking
Autorzy:
Tändl, M.
Stark, T.
Erol, N. E.
Löer, F.
Kecskeméthy, A.
Powiązania:
https://bibliotekanauki.pl/articles/930125.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
analiza ruchu
system mięśniowo-szkieletowy
symulacja wieloczłonowa
promieniowanie rentgenowskie
gait/motion analysis
muskuloskeletal system
multibody simulation
MRI
X-ray
motion tracking
Opis:
Accurate bone motion reconstruction from marker tracking is still an open and challenging issue in biomechanics. Presented in this paper is a novel approach to gait motion reconstruction based on kinematical loops and functional skeleton features extracted from segmented Magnetic Resonance Imaging (MRI) data. The method uses an alternative path for concatenating relative motion starting at the feet and closing at the hip joints. From the evaluation of discrepancies between predicted and geometrically identified functional data, such as hip joint centers, a cost function is generated with which the prediction model can be optimized. The method is based on the object-oriented multibody library [...], which has already been successfully applied to the development of industrial virtual design environments. The approach has been implemented in a general gait visualization environment termed Mobile Body.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2009, 19, 3; 469-483
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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