Browsing Mechanical Engineering by Author "Özyeğin University"
Now showing items 81-100 of 459
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Design and control of a novel variable stiffness series elastic actuator
Sariyildiz, E.; Mutlu, R.; Roberts, J.; Kuo, C. H.; Uğurlu, Regaip Barkan (IEEE, 2023-06)This article expounds the design and control of a new variable stiffness series elastic actuator (VSSEA). It is established by employing a modular mechanical design approach that allows us to effectively optimize the ... -
Design and development of a durable series elastic actuator with an optimized spring topology
Yıldırım, M. C.; Şendur, Polat; Kansızoğlu, Mehmet Taha; Uras, U.; Bilgin, Onur; Emre, Sinan; Yapıcı, Güney Güven; Arık, Mehmet; Uğurlu, Regaip Barkan (Sage, 2021-12)This paper aims to present the integrated design, development, and testing procedures for a state-of-the-art torsion-based series elastic actuator that could be reliably employed for long-term use in force-controlled robot ... -
Design and development of a powered upper limb exoskeleton with high payload capacity for industrial operations
Coruk, Sinan; Yıldırım, Mehmet Can; Kansızoğlu, Ahmet Talha; Dalgıç, Oğuzhan; Uğurlu, Regaip Barkan (IEEE, 2020-09)This study presents the hardware development and low level controller structure of an upper-body exoskeleton that is equipped with high torque-to-weight ratio actuators. It is intended to be used in industrial applications. ... -
Design and development of a torsion-based series elastic actuator with nested encoders for a wearable exoskeleton robot
Kuru, Alihan; Uğurlu, Regaip Barkan; Bebek, Özkan (IEEE, 2022)This paper presents the design of a high torque-to-mass ratio series elastic actuator (SEA) for wearable powered exoskeletons. Nonbackdrivable actuators are ideal for applications that require high torque. Commonly, active ... -
Design and fabrication of a robotic tactile device for abdominal palpation
Davaria, S.; Najafi, F.; Mahjoob, M. J.; Motahari-Bidgoli, S. M. (IEEE, 2014)Palpation can be used as a manual technique for detecting normal and abnormal tissues. According to the recent applications of the robotic and control systems in medical fields, the design and fabrication of a device capable ... -
Design and kinematics of a 5-DOF parallel robot for beating heart surgery
Ersoy, Onur; Yıldırım, Mehmet Can; Ahmad, A.; Yirmibesoglu, O. D.; Koroglu, N.; Bebek, Özkan (IEEE, 2019)In this paper, mechanical and electronics design of a lightweight 5-DOF robot, Ozyegin Surgery Robot I (OSI), and it's performance of tracking the heart motion for coronary artery bypass procedure (CABG) are presented. The ... -
Design and modeling of a parallel robot for ultrasound guided percutaneous needle interventions
Orhan, Sabri Orcun; Yildirim, Mehmet Can; Bebek, Özkan (IEEE, 2015)Necessity of precise positioning in percutaneous needle operations enables robotic systems to take part in medical procedures. Researches that have been done until today showed robotic systems increase the accuracy of ... -
A design and optimization method for matching the torque of the wind turbines
Al-Abadi, A.; Ertunç, Özgür; Weber, H.; Delgado, A. (AIP Publishing, 2015)An aerodynamic shape optimization method for a horizontal axis wind turbine is developed and verified through experimentation with a laboratory-scale wind turbine. Our method is based on matching the rotor's and the coupled ... -
Design of a parallel robot for needle-based interventions on small animals
Bebek, Özkan; Hwang, M. J.; Çavuşoğlu, M. C. (IEEE, 2013-02)In this paper, a novel 5-degrees-of-freedom robot for performing needle-based interventions on small animal subjects is presented. The robot can realize dexterous alignment of the needle using two parallel mechanisms, and ... -
Design of a solenoid based prototype injector for evaluation of electromagnetic parameters
Yağcı, Ayhan; Quresh, Muhammad Sarmad; Kuntuz, Mehmet Polat; Bebek, Özkan (IEEE, 2019)Injector is a pump and valve mechanism, that sprays liquid intermittently to intended volume. In this research, evaluation of the electromagnetic properties of a solenoid actuator used in the prototype injector systems has ... -
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 sensitivity and optimization of powertrain mount system design parameters for rigid body modes and kinetic energy distributions
Şendur, Polat; Tunç, B. (Springer Nature, 2020-08-24)This study evaluates the influences of the powertrain mount design parameters on the frequencies of powertrain rigid body modes and their kinetic energy distributions (KEDs), which play an important role in the low-frequency ... -
A design tool for direct and non-stochastic calculations of near-field radiative transfer in complex structures: The NF-RT-FDTD algorithm
Didari, Azadeh; Mengüç, Mustafa Pınar (Elsevier, 2017)Advances in nanotechnology and nanophotonics are inextricably linked with the need for reliable computational algorithms to be adapted as design tools for the development of new concepts in energy harvesting, radiative ... -
Design, operation, and motion characteristics of a precise piezoelectric linear motor
Hii, K.-F.; Vallance, R. R.; Mengüç, Mustafa Pınar (Elsevier, 2010-04)This paper presents the design, operation, and motion characteristics of a precise piezoelectric motor for linear translation. The motor is compact, thermally stable, ultra-high vacuum compatible, and suitable for applications ... -
Designing redundant cable-driven parallel robots for additive manufacturing using end-effector compliance index
Kara, Burhan; Qureshi, Muhammad Sarmad; Bundur, Zeynep Başaran; Bebek, Özkan (IEEE, 2023)This paper presents a methodology for optimizing cable anchor points for cable-driven parallel robots (CDPRs) for specific additive manufacturing tasks. Much of a CDPR's workspace is generally not used for printing tasks. ... -
Determination of the critical reynolds number for flow over symmetric NACA airfoils
Yousefi, K.; Razeghi, Alireza (American Institute of Aeronautics and Astronautics Inc, AIAA, 2018)The determination of the critical Reynolds number is of practical importance in many engineering applications, particularly in determining the aerodynamic characteristics of air vehicles. In this study, we numerically ... -
Determining the structural life of an electric vehicle battery from road loads
Düzgün, Halil Zınar; Şendur, Polat (Walter de Gruyter, 2022-07)Although the electrical system is important in the development of electric vehicles, the durability of the battery system against mechanical loads and the performance of the battery against shock reactions are just as ... -
Developing a standard measurement and calculation procedure for high brightness LED junction temperature
Arık, Mehmet; Kulkarni, K. S.; Royce, C.; Weaver, S. (2014)White light emitting diodes (LEDs) are appearing in general illumination applications. Clusters of such LEDs can replace an incandescent light bulb of equal luminosity on the merit of considerably low power consumption. ... -
Development and 3D spatial calibration of a parallel robot for percutaneous needle procedures with 2D ultrasound guidance
Ahmad, Mirza Awais; Orhan, Sabri Orçun; Yıldırım, Mehmet Can; Bebek, Özkan (World Scientific, 2017-12-01)Robotic systems are being applied to medical interventions as they increase the operational accuracy. The proposed autonomous and ultrasound guided 5-DOF parallel robot can achieve such accuracy for needle biopsies, which ... -
Development of 3-D chemical mechanical polishing process for nanostructuring of bioimplant surfaces
Özdemir, Zeynep; Orhan, Orçun; Bebek, Özkan; Başım, Gül Bahar (ECS, 2014)This study focuses on the development of a three dimensional chemical mechanical polishing (CMP) process to induce smoothness or controlled nano-roughness on the bio-implant material surfaces, particularly for an application ...
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