Browsing by Author "Wijayasingha, LNS"

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    item: Conference-Abstract
    A 3DOF transtibial robotic prosthetic limb
    Madusanka, DGK; Wijayasingha, LNS; Sanjeevan, K; Ahamed, MAR; Edirisooriya, JCW; Gopura, RARC
    A robotic prosthesis is a device which is used to replace a missing body part. These devices are intended to return the amputees to their pre-amputation functional status. Below knee (Transtibial) amputation is the most common amputation occurred in the lower limb. That is caused by reasons such as diseases, injury due to explosions of anti-personnel land mines and accidents. The existing prostheses for transtibial amputees have yet to be improved to reinstate the biomechanical functions normally provided by the ankle joint. Therefore, the purpose of this research is to develop a transtibial robotic prosthesis which would provide functions usually provided by the ankle. The proposed design consists of 3 Degrees of Freedom (DOF) to generate similar biomechanical motions at the ankle joint. Further it includes a passive regenerative system to reduce motor power requirement of dorsiflexion/plantarflexion. Experiments are carried out to verify the effectiveness of the proposed prosthetic limb and to verify the possibility of using electromyographic (EMG) signal based control of the prosthesis.
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    item: Conference-Abstract
    A Review on hybrid myoelectric control systems for upper limb prosthesis
    Madusanka, DGK; Wijayasingha, LNS; Gopura, RARC; Amarasinghe, YWR; Mann, GKI;
    Prosthesis is a device extension which is used to replace a missing body part. Amputees who lost all or part of the upper limb may use a prosthesis depending on their requirement. Externally powered prosthesis holds an importance since it is capable of imitating natural limb motions. However, the way they are controlled stand way back from the natural limb. Myoelectric control systems which uses electromyographic signals holds an important role in controlling prosthesis. This paper reviews the myoelectric control systems for upper limb prosthesis. At first control methods based only on myoelectric signals are briefly reviewed. The main focus is given to review hybrid myoelectric control systems. Hybrid myoelectric control methods are categorized and each category is compared and reviewed. Finally feasibility of using vision as an added sensor was discussed with examples from literature.
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    item: Conference-Full-text
    A Review on Hybrid Myoelectric Control Systems for Upper Limb Prosthesis
    (2015-08-03) Madusanka, DGK; Wijayasingha, LNS; Gopura, RARC; Amarasinghe, YWR; Mann, GKI
    Prosthesis is a device extension which is used to replace a missing body part. Amputees who lost all or part of the upper limb may use a prosthesis depending on their requirement. Externally powered prosthesis holds an importance since it is capable of imitating natural limb motions. However, the way they are controlled stand way back from the natural limb. Myoelectric control systems which uses electromyographic signals holds an important role in controlling prosthesis. This paper reviews the myoelectric control systems for upper limb prosthesis. At first control methods based only on myoelectric signals are briefly reviewed. The main focus is given to review hybrid myoelectric control systems. Hybrid myoelectric control methods are categorized and each category is compared and reviewed. Finally feasibility of using vision as an added sensor was discussed with examples from literature.