Yazar "Ege, Mucahit" seçeneğine göre listele

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    Design and Dynamic Model of A Novel Powered Above Knee Prosthesis
    (IEEE, 2019) Ege, Mucahit; Kucuk, Serdar
    Nowadays, fully active lower limb prostheses are very important for amputees to have comfort, aesthetic mobility and the ideal adaptation to daily life. However, active joint control is very difficult because of changing floor conditions, and it is essential to obtain a dynamic model of prostheses for system control. In this study, the design and dynamic model of a new above-knee prosthesis are presented. Firstly, the model design of the prosthesis was proposed by using Solidworks software environment and then kinematic and dynamic model was obtained as mathematical by using both Lagrange-Euler and also Newton-Euler method. The accuracy of the results has been proved with the same results obtained by both methods. MATLAB and Scientific Notebook software were used for those calculations. The torque equations required were obtained to perform joint movements with the dynamic model calculations and a simulation was performed to demonstrate the torques required for a gait cycle. Torque equations obtained were used for system control, motors selection and optimization in other studies.
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    DESIGNING OF A MODEL OF ELECTRICAL CONTROLLED ABOVE KNEE PROTHESIS
    (IEEE, 2015) Ege, Mucahit; Kucuk, Serdar
    In this study, a mechanical model of electrically controlled above knee prosthesis was designed. Since the parameters such as ergonomic structure, height, weight, energy consumption, velocity, torque and electromechanical control are very important for prosthesis, the new prosthesis was designed considering these parameters. In literature, studies are mostly performed in flat surfaces because of straight forwardly designing and manufacturing above knee prosthesis. However in this study, a universal joint that provides foot inversion and eversion was added to the ankle in order to make the prosthesis to walk different surface conditions. Likewise a toe joint was also mounted for achieving walking convenience and aesthetics. Finally, forward kinematics model was derived and position and orientation data was obtained during the walking.
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    Development And Biomechanical Validation Of Medical Insoles To Prevent Foot Ulcers On Diabetic Patients By Means Of Thermoplastic Elastomers And Additive Manufacturing Technologies
    (IEEE, 2019) Aydin, Levent; Kucuk, Serdar; Cetinarslan, Berrin; Canturk, Zeynep; Peker, Ayfer; Ege, Mucahit; Yalcin, Fatih
    Traditional insole manufacturing, also known as customized medical equipment production, is a laborious work that requires specific skills. Current manufacturing approach contains harmful material particles such as plaster and carbon that may cause respiratory failure. Besides, manufactured insoles may not be suitable for any mass-produced footwear in all cases. Therefore, patients require to get insole-specific footwears. In this study, a diabetic insole was manufactured using a thermoplastic elastomer on an FDM based system. Biomechanical functionality was achieved by means of the performed polymer analysis. Finally, desired biomechanical properties were determined by performed finite element analysis. Both additive and traditional manufactured insoles were also compared according to the cost and function.
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    Energy Minimization of New Robotic-Type Above-Knee Prosthesis for Higher Battery Lifetime
    (Mdpi, 2023) Ege, Mucahit; Kucuk, Serdar
    In this paper, an optimization problem for the energy minimization of a new robotic-type three-axes above-knee prosthesis is carried out based on the actuator power consumption. The optimization problem aims to find the optimal link masses with which to minimize the electrical energy drawn from the battery of the new prosthesis, subject to the kinematic and dynamic constraints. Particle swarm optimization (PSO) is used as the optimization algorithm. A discrete-time PID controller is used to represent the saved energy by means of mass optimization. Optimization illustrated that energy consumption in the batteries can be reduced 51% and provides 1.89 h of additional battery lifetime, according to the literature, by optimizing prosthetic link masses while providing acceptable prosthesis stiffness.
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    Surgical Planning and Optimization of A Full Spine Surgery
    (IEEE, 2019) Ege, Mucahit; Kucuk, Serdar; Cakir, Ozgur; Aydin, Levent; Dilek, Riza; Ege, Gozde Konuk
    3D scanning technologies have become widely used for medical needs such as anatomical models, biocompatible implants and orthotic / prosthetic models. However, the use of 3D visuals of the scanned tissues using two-dimensional computer screens cannot give the desired effect. Although surgical planning with virtual reality technology provides more accurate results, it cannot be performed in every hospital due to high costs of the system. In this study, the operation of an advanced scoliosis patient was planned in advance. An ideal protocol to be used especially in complex spine operations was determined and its suitability to the target anatomical tissue structure was analyzed. At the same time, a surgical planning system based on layered manufacturing technologies to realize the production of the mentioned anatomical model is introduced.