Browsing by Author "Uğurlu, Regaip Barkan"
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3-D dynamic walking trajectory generation for a bipedal exoskeleton with underactuated legs: A proof of concept
Soliman, Ahmed Fahmy; Şendur, Polat; Uğurlu, Regaip Barkan (IEEE, 2019-06)This paper presents a framework to address three dimensional (3-D) dynamic walking for a bipedal exoskeleton with underactuated legs. To achieve this goal, the framework is constructed via a trajectory generator and an ... -
Active compliance control reduces upper body effort in exoskeleton-supported walking
Uğurlu, Regaip Barkan; Oshima, H.; Sariyildiz, E.; Narildyo, T.; Babic, J. (IEEE, 2020-04)This article presents a locomotion controller for lower limb exoskeletons so as to enable the combined robot and user system to exhibit compliant walking characteristics when interacting with the environment. This is of ... -
Agile and stable running locomotion control for an untethered and one-legged hopping robot
Uğurlu, Regaip Barkan; Sariyildiz, E.; Kawasaki, T.; Narikiyo, T. (Springer, 2021-09)This paper is aimed at presenting a locomotion control framework to realize agile and robust locomotion behaviors on conventional stiff-by-nature legged robots. First, a trajectory generator that is capable of characterizing ... -
Application of a disturbance observer based controller to improve vehicle ride
Şendur, Polat; Uğurlu, Regaip Barkan (Canadian Acoustical Association, 2019)In this paper the application of a disturbance observer based control algorithm is proposed to improve the vehicle ride performance of a vehicle that has magnetorheological damper (MR Damper) suspension. The vehicle is ... -
Assessments on the improved modelling for pneumatic artificial muscle actuators
Peternel, L.; Uğurlu, Regaip Barkan; Babic, J.; Morimoto, J. (IEEE, 2015)In this paper, we present an analysis regarding the pneumatic air muscle modelling, with a particular emphasis on the exoskeleton robot control. We propose two calibration approaches for obtaining the model identification ... -
Benchmarking torque control strategies for a torsion-based series elastic actuator
Uğurlu, Regaip Barkan; Sarıyıldız, E.; Kansızoğlu, Ahmet Talha; Özçınar, Erim Can; Coruk, Sinan (IEEE, 2022-06)The diversity in torque-controlled actuators has enabled researchers to address numerous physical human-robot interaction applications with enhanced safety, dependability, and interaction capability [1]. Yet, only a few ... -
Centroidal momentum observer: Towards whole-body robust control of legged robots subject to uncertainties
Oral, Dilay Yesildağ; Barkana, D. E.; Uğurlu, Regaip Barkan (IEEE, 2022)This paper aims to provide robust dynamic motion control and eliminate parameter uncertainty in single-legged robots with a centroidal momentum-based control algorithm. In order to ensure the continuity of the movement ... -
Challenges and solutions for application and wider adoption of wearable robots
Babič, J.; Laffranchi, M.; Tessari, F.; Verstraten, T.; Novak, D.; Šarabon, N.; Uğurlu, Regaip Barkan; Peternel, L.; Torricelli, D.; Veneman, J. F. (Cambridge University Press, 2021)The science and technology of wearable robots are steadily advancing, and the use of such robots in our everyday life appears to be within reach. Nevertheless, widespread adoption of wearable robots should not be taken for ... -
Co-ex: A torque-controllable lower body exoskeleton for dependable human-robot co-existence
Yıldırım, Mehmet Can; Kansızoğlu, Ahmet Talha; Emre, Sinan; Derman, Mustafa; Çoruk, Sinan; Soliman, Ahmed Fahmy; Şendur, Polat; Uğurlu, Regaip Barkan (IEEE, 2019-06)In this paper, we present our research study concerning the design and development of an exoskeleton that aims to provide 3D walking support with minimum number of actuators. Following a prior simulation study, the joint ... -
A comparison study on observer-based force control of series elastic actuators
Kansızoğlu, Ahmet Talha; Sariyildiz, E.; Uğurlu, Regaip Barkan (IEEE, 2018)This paper presents a comparison study for the robust force control of series elastic actuators (SEAs). In most robotics systems, SEAs are used as an essential actuation method due to the benefits such as lower reflected ... -
Contact force distribution using centroidal momentum feedback for quadruped locomotion
Özçınar, Erim Can; Bebek, Özkan; Uğurlu, Regaip Barkan (IEEE, 2023)This paper proposes a method to distribute contact forces to eliminate undesired torso orientation fluctuations and regulate heading during dynamic quadruped trot-walking motion. The proposed method makes use of centroidal ... -
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 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 implementation of a robust control scheme for a smart joint
Jabeen, Saher (2017-01)The invention of biomedical tools has made medical treatments more convenient; however, manual insertion of these tools requires years of practice and erroneous insertion into the body may cause ruptures and bleeding. ... -
Design and modeling of a parallel robot for ultrasound guided percutaneous needle interventions
Orhan, Sabri Orçun (2015-08)Percutaneous needle operations need precise positioning in order to collect samples for diagnosis. Due to their robustness, accuracy robotic systems started to take place in medical procedures. Research that have been done ... -
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 ... -
Development of a torque-controllable upper limb exoskeleton for industrial applications
Chronic upper body pain and injuries are undesirable physical disorders that result from regular exposure to external forces that strain the musculoskeletal system. These symptoms reduce both the quality of life and ...
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