Master Degree / Yüksek Lisans Tezleri
Permanent URI for this collectionhttps://hdl.handle.net/11147/3008
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Master Thesis Implementation of a Real-Time Teleoperation System for the Control of a Robotic Squid(01. Izmir Institute of Technology, 2023) Cezayirli, Hasan; Dede, Mehmet İsmet CanTeleoperation is defined as the remote control of a robotic system from an operational environment. Teleoperation of soft robots has been a growing research topic in recent years and there are still areas awaiting further studies. In this study, a real-time teleoperation system has been implemented for a robotic squid with four soft arms, to be used in underwater operations. The teleoperation system consists of dissimilar master-slave system kinematics, with multiple master systems and multiple slave systems. An operator utilizes two haptic devices for the manipulation of the four soft robot arms. Haptic feedback is incorporated into the system for ease of use. The slave system within the implemented teleoperation system is simulated using hardware-in-the-loop simulation. For this purpose, communication protocols from the real system are employed. In other words, the applied teleoperation system is integrated within the hardware-in-the-loop simulation of the real system. Experiments were conducted to validate that the implemented system is a real-time system and to evaluate the ease of use of the system from the operator's perspective. Additionally, experiments were expanded to measure the impact of haptic feedback on the performance of the operator. The experimental results indicate that the system is a real-time system and haptic feedback improves the system's ease of use.Master Thesis Design of a Physical Human-Robot Interface for Lifting Operations(Izmir Institute of Technology, 2022) Nalbant, Uğur; Dede, Mehmet İsmet Can; Dede, Mehmet İsmet CanIn this thesis, the design of a physical human-robot interface for lifting operations which controls the vertical movement of the payload is studied. The new design uses a low stiffness type of admittance control method that is aimed at reducing the surface impact force of the payload and providing better control for the operator while having the option of high stiffness admittance control. To reduce impact forces by using low stiffness admittance control, a sliding handle mechanism is introduced into the system. This type of design includes springs and bearings to create a low stiffness admittance-type user interface. Mathematical models are developed to calculate spring forces and mechanical strength. According to design requirements and mathematical calculations, the prototype is designed and manufactured. In the tests, it is seen that the spring forces are low, and the sliding motion of the handle is not consistent over different displacements. According to the test results, revisions are done, and the final design of the system is developed. In the final tests, it is seen that the new design of the physical human-robot interface performance is improved and the problem of the sliding motion of the handle is solved. Also, the surface impact forces are reduced with low stiffness admittance control. Another improvement of the new design is the ability to control the payload with high stiffness admittance control if the user chooses it. With this option, users can control the payload by touching the payload. Having both types of control methods, the user can choose which type of control method to use to handle payload in the factory.