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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Towards a Shape Memory Alloy Based Variable Stiffness Ankle Foot Orthosis

Bhadane-Deshpande, Minal 26 June 2012 (has links)
No description available.
2

Toward Creating Normal Ankle Joint Behavior for Drop Foot Patients Using an Ankle Foot Orthosis (AFO) with Superplastic NiTi Springs

Zamanian, Hashem January 2017 (has links)
No description available.
3

Evaluation of conventional and dynamic ankle foot: orthosis in cerebral palsy subjects using gaitanalysis

Lam, W. K., 林永佳. January 2003 (has links)
published_or_final_version / abstract / toc / Orthopaedics and Traumatology / Master / Master of Philosophy
4

Vliv funkční elektrické stimulace aplikované pomocí neurostimulátoru WalkAide na rovnováhu a chůzi nemocných s roztroušenou sklerózou mozkomíšní / The Effect of Functional Electrical Stimulation Applied by the WalkAide Neurostimulator on Balance and Gait in Patients with Multiple Sclerosis

Maršíčková, Veronika January 2019 (has links)
Author: Bc. Veronika Maršíčková Title: The Effect of Functional Electrical Stimulation Applied by the WalkAide Neurostimulator on Balance and Gait in Patients with Multiple Sclerosis. Objectives: The main aim of this diploma thesis is an assessment of therapeutic effect of functional electrical stimulation applied with using of the neurostimulator WalkAide on balance and gait of people with multiple sclerosis against standard outpatient physiotherapy. Partial aims are comparisons the immediate and persistent therapeutic effect of functional electrical stimulation. Methods: The thesis is a randomized controlled trial. For its realization it was necessary to create an intervention and a control group of probands. Both groups received 2 different rehabilitation programs. The intervention group received the WalkAide neurostimulator (for 2 months) for home use. The control group underwent a standard outpatient physiotherapeutic program with application of 20 therapies (at least) lasting 60 minutes (i.e. 2-3 times a week for 2 months). Data collection was performed by validated motor tests and questionnaires, which were focussed on endurance, speed and skilfulness of gait, static and dynamic balance and subjective perception of balance, overal mobility and pathological fatigue. These tests and...
5

Implementing a Control Strategy for a Cable-­driven Ankle Exoskeleton / Implementering av en kontrollstrategi för ett kabeldrivet ankel exoskelett

Zhu, Yu January 2021 (has links)
Ankle exoskeletons are designed to help people with movement weakness to restore the walking ability . However, people with gait pathology, for instance, drop foot, usually have difficulties in lifting the front part of foot during gait. Thus, different from health subjects, both plantarflexion and dorsiflexion assistance are needed for them to walk better. The purpose of this thesis is to implement an EMG-­driven control strategy for a cable­driven ankle exoskeleton while exploring the use of reinforcement learning in exoskeleton control. The work uses an EMG­-driven musculoskeletal model to predict ankle joint torque. The model uses EMG signals from 4 lower­-limb muscles related to plantarflexion and dorsiflexion to obtain ankle torque and stiffness. The dynamic model for an ankle exoskeleton is built for simulation. The reinforcement learning controller is designed for the ankle exoskeleton tracking the desired ankle joint torques. Based on simulation results, two main conclusions can be drawn, one is that the proposed control strategy can provide precise torque assistance; the other is that using reinforcement learning to track the desired assistive trajectories is effective. / Ankel exoskeletons är utformade för att hjälpa människor med rörelsessvaghet att återställa gångförmågan. Men personer med gångpatologi, till exempel faller fot, har vanligtvis svårt att lyfta den främre delen av foten under gång. Således, annorlunda än hälsoämnen, behövs både plantarflexion- och dorsiflexionshjälp för att de ska kunna gå bättre. Syftet med denna avhandling är att implementera en EMG­-driven kontrollstrategi för ett kabeldrivet vristexoskelet samtidigt som man utforskar användningen av förstärkningsinlärning vid exoskeletskontroll. Arbetet använder en EMG­-driven muskuloskeletal modell för att förutsäga fotledets vridmoment. Modellen använder EMG-­signaler från 4 nedre extremiteter muskler relaterade till plantarflexion och dorsiflexion för att uppnå vridmoment och styvhet. Den dynamiska modellen för ett fotoskeleton är byggd för simulering. Förstärkningsinlärningskontrollern är utformad för fotledets exoskelett som spårar önskade vridmoment i fotleden. Baserat på simuleringsresultat kan två huvudsakliga slutsatser dras, en är att den föreslagna kontrollstrategin kan ge exakt momenthjälp; den andra är att det är effektivt att använda förstärkningslärande för att spåra de önskade hjälpbanorna.

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