Browsing by Author "Ünal, Ramazan"
Now showing items 1-19 of 19
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Conceptual design of a fully passive transfemoral prosthesis to facilitate energy-efficient gait
Ünal, Ramazan; Behrens, S.; Carloni, R.; Hekman, E.; Stramigioli, S.; Koopman, B. (IEEE, 2018-12)In this paper, we present the working principle and conceptual design toward the realization of a fully-passive transfemoral prosthesis that mimics the energetics of the natural human gait. The fundamental property of the ... -
A custom brace design to connect a user limb to an exoskeleton link with minimal discomfort
Çevik, Süleyman Can; Derman, Mustafa; Ünal, Ramazan; Uğurlu, Regaip Barkan; Bebek, Özkan (IEEE, 2021)Exoskeletons are increasingly helping people with different applications. Regardless of what they were built for, exoskeletons have a common discomfort problem from the misalignment of robot and human joints. In this paper, ... -
Design and characterization of continuous glucose monitoring sensor
The main objective of this thesis is the development and the elaboration of a low cost continuous glucose monitor. This thesis describes the design of miniaturized continuous glucose monitoring sensor based on two needles. ... -
Design of bio-joint shaped knee exoskeleton assisting for walking and sit-to-stance
Kapci, M. F.; Ünal, Ramazan (Springer Nature, 2019)In this study, a bio-joint shaped knee joint exoskeleton is presented. This design is meant for avoiding misalignment of the exoskeleton joint with the biological knee joint. For this purpose a cam mechanism has been ... -
Design, development, and real-life implementation of a high power quadruped robot
This thesis presents the design, development, and experimental test of a quadruped with high power-to-weight ratio. In this thesis, three design processes are studied, namely, actuator design, leg mechanism design and torso ... -
Development and control of a parallel endoscopic surgical robot platform for beating heart procedures
Ersoy, Onur (2021-06-16)Minimally Invasive Robotic Surgery focuses on performing surgeries using advanced robotic tools through small incisions. Taking advantage of these advanced tools and control methods, challenging surgeries such as ... -
Development of a torque-controllable lower extremity exoskeleton for crutch-free 3D walking support
Yıldırım, Mehmet Can (2018-12-24)Spinal cord paralysis is a condition, which is formed due to full or partial loss of sensorimotor and autonomous functionalities of the spinal cord. Paraplegia is a type of spinal cord injury which causes functionality ... -
Discussing modernizing engineering education through the Erasmus + Project Titled "Open Educational Resources on Enabling Technologies in Wearable and Collaborative Robotics (WeCoRD)
Kılıç-Bebek, Ebru; Nizamis, K.; Karapars, Gülhis Zeynep; Gökkurt, Muharrem Ali; Ünal, Ramazan; Bebek, Özkan; Vlutters, M.; Vander Poorten, E.; Borghesan, G.; Decré, W.; Aertbelien, E.; Borisova, O.; Borisov, I.; Kolyubin, S.; Kodal, M. I.; Uğurlu, Regaip BarkanThe Erasmus + project titled “Open Educational Resources on Enabling Technologies in Wearable and Collaborative Robotics (WeCoRD)", can serve as a model to establish strategic international and multidisciplinary partnerships ... -
Durability testing and vibration characterization of an electric vehicle battery
Although the electrical system is important in the development of electric vehicles, the durability of the battery against mechanical loads and the performance of the battery against shock reactions are just as important. ... -
Dynamic characterization and optimization of additively manufactured TPMS lattice structures
Şimşek, Uğur (2021-08-19)Additive manufacturing (AM) has opened new avenues for the manufacturing of structures to achieve challenging engineering tasks. Triply periodic minimal surface (TPMS) lattices, a unique example of such structures, exhibits ... -
An experimental and numerical investigation of immersion cooled blue led combined with yag:ce phosphor for thermal, electrical and optical performance
At the new age of illumination, light emitting diodes (LEDs) have been proven to be the most efficient alternative to conventional light sources. Yet, in comparison to the other lighting systems, LEDs can withstand a lower ... -
HandMECH—Mechanical hand prosthesis: Conceptual design of a two degrees-of-freedom compliant wrist
Elsayed, Ahmed Abdelrahman Ibrahim; Ünal, Ramazan (Springer, 2022)A compliant wrist joint is important for positioning the hand in different positions to perform various daily tasks. It is also important that the wrist is able to achieve sufficient range of motion (RoM). The RoM is ... -
HandMECH—Mechanical hand prosthesis: Conceptual design of the hand compartment
Baysal, Barış; Ünal, Ramazan (Springer, 2022)In this study, conceptual design of the hand compartment of a body-powered hand prosthesis, HandMECH, is presented. HandMECH is a body-powered prosthesis and the hand compartment is designed according to human finger size ... -
Investigation of corrosion in oil pipelines through surface nano-treatment
Ahmed, Mohammed Salih (2020-01)Corrosion is the unintentional and degradation of a material caused by the reaction of that material with its environment and a natural possible hazard correlated with gas and oil generation and transportation facilities. ... -
Robust whole-body control for legged robots
This thesis aims to propose a robust whole-body locomotion controller for legged robots. To this end, it offers the centroidal momentum observer control algorithm, which could be a very useful tool for providing robust ... -
Simulation-based design and locomotion control implementation for a lower body exoskeleton
Derman, Mustafa; Soliman, Ahmed Fahmy; Kuru, Alihan; Çevik, Süleyman Can; Ünal, Ramazan; Bebek, Özkan; Uğurlu, Regaip Barkan (IEEE, 2022)This paper proposes a simulation-based design and locomotion control methodology for an exoskeleton that is aimed at providing assistance to users with ambulatory difficulties. To increase the power-to-weight ratio while ... -
A soft+rigid hybrid exoskeleton concept in scissors-pendulum mode: A suit for human state sensing and an exoskeleton for assistance
Uğurlu, Regaip Barkan; Acer, M.; Barkana, D. E.; Gocek, I.; Kucukyilmaz, A.; Arslan, Y. Z.; Basturk, H.; Samur, E.; Ugur, E.; Ünal, Ramazan; Bebek, Özkan (IEEE, 2019-06)In this paper, we present a novel concept that can enable the human aware control of exoskeletons through the integration of a soft suit and a robotic exoskeleton. Unlike the state-of-the-art exoskeleton controllers which ... -
Topology optimization-based design and development of a compact actuator with a high torque-to-weight ratio for quadrupeds
Akın, Barış; Özçınar, Erim Can; Balcı, Barış; Emre, Sinan; Şendur, Polat; Bebek, Özkan; Ünal, Ramazan; Uğurlu, Regaip Barkan (IEEE, 2022)This paper presents the design, development, and testing procedures for a compact actuator with a high torque-to-weight ratio, generally aimed to actuate legged robots, e.g., quadrupeds. The main goal of designing the ... -
Transdisciplinarity as a learning challenge: Student experiences and outcomes in an innovative course on wearable and collaborative robotics
Kılıç-Bebek, Ebru; Nizamis, K.; Vlutters, M.; Bebek, Özkan; Karapars, Gülhis Zeynep; Ünal, Ramazan; Yılmaz, Deniz; Uğurlu, Regaip BarkanContribution: This study provides evidence for the benefit of short online courses for transdisciplinary competence development of graduate students. It shows the significant challenges students face while learning, and ...
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