A Low-Cost Open-Source 3-D-Printed Three-Finger Gripper Platform for Research and Educational Purposes

Robotics research and education have gained significant attention in recent years due to increased development and commercial deployment of industrial and service robots. A majority of researchers working on robot grasping and object manipulation tend to utilize commercially available robot-manipulators equipped with various end effectors for experimental studies. However, commercially available robotic grippers are often expensive and are not easy to modify for specific purposes. To extend the choice of robotic end effectors freely available to researchers and educators, we present an open-source lowcost three-finger robotic gripper platform for research and educational purposes. The 3-D design model of the gripper is presented and manufactured with a minimal number of 3-D-printed components and an off-the-shelf servo actuator. An underactuated finger and gear train mechanism, with an overall gripper assembly design, are described in detail, followed by illustrations and a discussion of the gripper grasping performance and possible gripper platform modifications. The presented open-source gripper platform computer-aided design model is released for downloading on the authors research lab website(www.alaris.kz) and can be utilized by robotics researchers and educators as a design platform to build their own robotic end effector solutions for research and educational purposes

Design and control of a GYRO stabilized pan-tilt sensor system for mobile applications

Pan-tilt platforms are the motion control systems mostly used for controlled positioning of various devices (video cameras, sensors, antennas) in mobile applications such as aerial video surveillance systems, mobile robots for emergency situations, space rovers, defense modules and many others. In this project, a spherical parallel manipulator (SPM) platform is studied for designing a 3DOF system of pure rotation for optimal platform orientations suitable for mobile applications. An optimal trajectory generation and an orientation stabilization control systems will be designed using Model Predictive Control techniques and implemented on the platform prototype

Industrial manipulator based intelligent assist system for human-robot cooperative assembly tasks

Industrial robot manipulators are widely being used for various automated tasks such as pick and place, welding, painting, palletizing, drilling, etc. in standardized industrial processes that require monotonic execution of preprogrammed repetitive tasks with high precision and/or productivity. However, in many operations, it is desirable to exploit the force capabilities of robots by directly combining them with the skills and incomparable sensomotoric abilities of a human being for complex tasks

Industrial manipulator based intelligent assist system for human-robot cooperative assembly tasks

Industrial robot manipulators are widely being used for various automated tasks such as pick and place, welding, painting, palletizing, drilling, etc. in standardized industrial processes that require monotonic execution of preprogrammed repetitive tasks with high precision and/or productivity. However, in many operations, it is desirable to exploit the force capabilities of robots by directly combining them with the skills and incomparable sensomotoric abilities of a human being for complex tasks

A low-cost open-source 3-D-printed three-finger gripper platform for research and educational purposes

Robotics research and education have gained significant attention in recent years due to increased development and commercial deployment of industrial and service robots. A majority of researchers working on robot grasping and object manipulation tend to utilize commercially available robot-manipulators equipped with various end effectors for experimental studies. However, commercially available robotic grippers are often expensive and are not easy to modify for specific purposes. To extend the choice of robotic end effectors freely available to researchers and educators, we present an open-source lowcost three-finger robotic gripper platform for research and educational purposes. The 3-D design model of the gripper is presented and manufactured with a minimal number of 3-D-printed components and an off-the-shelf servo actuator. An underactuated finger and gear train mechanism, with an overall gripper assembly design, are described in detail, followed by illustrations and a discussion of the gripper grasping performance and possible gripper platform modifications. The presented open-source gripper platform computer-aided design model is released for downloading on the authors research lab website(www.alaris.kz) and can be utilized by robotics researchers and educators as a design platform to build their own robotic end effector solutions for research and educational purposes

Modeling of a Power Transformer Winding for Deformation Detection Based on Frequency Response Analysis *

Abstract: The paper presents a mathematical model of disc-type power transformer winding for frequency response analysis (FRA) based on traveling wave and multiconductor transmission line theories. Each disc of the model is described by traveling wave equations, which are connected to each other in a form of multiconductor transmission line model. The model is applied to FRA simulation in order to study winding axial and radial deformation and its delectability. Comparison of the simulated winding deformation cases with the reference FRA traces is given and discussed to explore the potentials of the proposed model for winding fault detection

Development of a Power Assist Lifting Device With a Fuzzy PID Speed Regulator

This paper introduces the development of a one-degree-of-freedom (1DOF) power assist device that helps to lift objects and facilitate the operator's job. The existing designs were examined for different control approaches and human-robot cooperation intuitiveness. The project involves the mechanical design of the experimental setup and development of advantageous control system. Since a task for the device is highly dependent on the mass of handling object, an adaptive strategy is a major concern of control system design. The controller design is represented by two loops to control admittance and velocity. To reduce the response time of the device, two velocity controllers are designed and compared with the embedded one. The first is a conventional proportional-integral-derivative controller which has shown better performance than the native controller. The second is derived from the first using fuzzy logic for better handling of different manipulation scenarios. The results illustrate that a faster response of the device can be achieved using a fuzzy logic controller due to the nonlinear nature that allows adapting to changes in velocity error and applied load