Mechanical Engineering / Makina Mühendisliği

Permanent URI for this collectionhttps://hdl.handle.net/11147/4129

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Language: search.filters.language.enPublisher: search.filters.publisher.Makina Teorisi Derneği

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Now showing 1 - 4 of 4
  • Conference Object
    Rehabilitasyon Egzersizleri için Bir Parmak Diş İskelet Mekanizması
    (Makina Teorisi Derneği, 2021) Kıpcak, Furkan; İnanç, Emirhan; Kiper, Gökhan; Öztürk, Rüstem Can; Güleç, Ege Toprak; Kiper, Gökhan; 03.10. Department of Mechanical Engineering; 03. Faculty of Engineering; 01. Izmir Institute of Technology
    Bu çalışmada, özellikle inme ve yaralanmalar sonrasında rehabilitasyon amaçlı kompakt, düşük maliyetli ve iki serbestlik dereceli bir parmak dış iskeletinin tasarımı, prototip üretimi ve testleri sunulmuştur. Kompakt bir tasarım olması çalışmanın özgün yanı olarak parmak etrafında fazla-kısıtlı çift-küresel 6-çubuk mekanizması kullanılmıştır. Önce bir el işaret parmağının hareketi tespit edilmiş ve bu hareket uyarınca 6-çubuk mekanizmasının kinematik sentezi yapılmıştır. Literatürdeki kuvvet değerleri uyarınca iş hesabı yapılarak motor-tork gereksinimleri hesaplanmış ve uygun motorlar seçilmiştir. Servo motorların denetim için Arduino kartı ve Matlab Simulink kullanılmış ve mekanizma uzuvları büyük ölçüde 3D yazıcıda üretilmiş olup kişiye özel üretime yönelik bir sistem mimarisi oluşturulmuştur. Son olarak üretilen prototipin işlevsellik testleri gerçekleştirilmiştir. Ortaya çıkan çift-küresel 6-çubuk mekanizmalı bu ilk prototip ancak kavram kanıtlama amaçlı olup sonuçlar ile ileriki çalışmalara ışık tutmak hedeflenmiştir.
  • Conference Object
    Applying Model Mediation Method To a Mobile Robot Bilateral Teleoperation System Experiencing Time Delays in Communication
    (Makina Teorisi Derneği, 2015) Taner, Barış; Dede, Mehmet İsmet Can; Dede, Mehmet İsmet Can; Uzunoğlu, Emre; 03.10. Department of Mechanical Engineering; 03. Faculty of Engineering; 01. Izmir Institute of Technology
    Teleoperation systems consist of two subsystems namely, the master and the slave. Master is used by the human operator to send commands to the slave to achieve a task. In bilateral teleoperation, the interaction forces acquired from the slave sub-system is sent to the master to increase the level of tele-presence. In this kind of a setting, data has to be transferred through a communication line in which package losses and time delays occur. Such deficiencies in the communication line results in stability problems in the system. In this paper, HIPHAD desktop haptic device as the master sub-system and an omni-directional mobile robot as the slave subsystem is used to develop an unlimited workspace teleoperation system. The system’s stability and tracking performance under a constant time delay is measured for direct teleoperation and when model mediation method is applied to ensure stability. The results of the tests are given and the conclusions are derived.
  • Conference Object
    A Study on Selecting the Method of Constructing the Information To Be Exchanged in Unlimited-Workspace Bilateral Teleoperation
    (Makina Teorisi Derneği, 2015) Karabulut, Mehmet Görkem; Dede, Mehmet İsmet Can; Dede, Mehmet İsmet Can; Karabulut, Mehmet Görkem; 03.10. Department of Mechanical Engineering; 03. Faculty of Engineering; 01. Izmir Institute of Technology
    In this paper, a study on selecting the mapping method for information exchange in unlimitedworkspace teleoperation is presented. In spite the fact that in most of the bilateral teleoperation systems, the master system sends motion demands and receives interaction force from the slave system, the information to be exchanged through the communication line between master and slave is selected to be force in both directions in this study. This approach is expected to ease the navigation of the user when a limited-workspace master system is used to control an unlimited-workspace slave system. As the unlimited-workspace slave system, a virtual flying scalpel is used and human skin is modeled to represent the environment around the slave system. Two methods of constructing force information, or in other words, information mapping between the two systems, are developed and evaluated via user studies. However, one of them comes out to provide acceptable results in the selected unlimited-workspace teleoperation task. Experimental results for the method that provides acceptable results are presented.
  • Conference Object
    Synthesis and Experiments of Inherently Balanced Umbrella Canopy Designs
    (Makina Teorisi Derneği, 2015) Van der Wijk, Volkert; Kiper, Gökhan; Kiper, Gökhan; Yaşır, Abdullah; 03.10. Department of Mechanical Engineering; 03. Faculty of Engineering; 01. Izmir Institute of Technology
    This paper shows how umbrella canopies and umbrella canopy-like mechanisms can be designed inherently balanced. Inherently balanced means that the center of mass of the moving parts remains stationary at a single point for any position of the mechanism simply because of the specific design of the mechanism where no countermasses or springs are needed. The advantages of a balanced canopy are that it can be opened and closed easily with minimal effort even if it has large dimensions and that it is inherently safe since the canvas cannot collapse or fall down. Also a shaking ground or floor does not affect an inherently balanced canopy. This is due to its dynamic force balance, allowing the canopy to be perfectly suitable as a retractable roof on for instance a truck on a bumpy road. In this study, three inherently balanced umbrella canopy designs are synthesized from principal vector linkages and their balance conditions are derived. Also a prototype was built and tested to show the feasibility of the design in practice.