The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Welding joints for offshore oil rigs present a complicated geometry and require multiple passes. This paper introduces a complete collision-free offline path planning approach for such joints. Collision detection is performed using A* search on a three dimensional grid, where triangular mesh representations of the welding joint and its fixture form the objects. A workflow is proposed for the complete...
Here we present an approach to manipulate a range of articulated objects using a mobile robot equipped with a force sensitive robotic arm. Our system is designed to operate based on programmable rough estimates of initial movement or even without any a priori knowledge at all. We use a manipulability criterion in conjunction with active compliance to plan and execute the desired task.
This paper presents the problem of robot deployment for a number of scattered tasks. We aim to minimize the duration it takes for all robots to reach their assigned task locations. In previous work, we have proposed a team composed of one carrier robot (CR) and several servant robots to accomplish the mission. Then we have suggested an algorithm that determines a path of the CR for an efficient deployment...
This paper describes a method for extrinsic sensor calibration for a 2D laser profile sensor on a robot arm used as a robot based 3D scanning system. In order to establish a relationship between the sensor measurements and the robot positions, the transformation between the robot flange and the sensor reference frame are determined. The developed calibration method is implemented as an automated self-calibration...
Cloud robotics is a new approach to robotics that exploits the internet as a resource for parallel computing and data sharing. Robots are no more considered as isolated devices but now they can add new functionalities, communicate with the environment and share knowledge base. Exploiting this new technology a robot can also take advantages by off-loading heavy computations to the cloud, thus reducing...
Robots deployed in Search and Rescue missions are required to act autonomously, since in disaster scenarios even a remote control of the robots might not be possible anymore. Additionally it is desirable to use several of these robots at once, since the search for survivors is a time-critical task, and the time to find victims should in the best case scale with the number of robots. In order to achieve...
Current state of the art in industrial robotics presents highly autonomous production plants, where an undefined number of robots work in cooperation to perform complicated tasks in an automatic way. However, these tasks are repetitive and generally do not allow a minimum change or variation in the overall process to obtain a successful result. In addition to this, these layouts do not allow any fast...
This work deals with the problem of motion planning for a robotic system with two arms, considering the possibility of using one arm to remove potential obstacles in order to get a collision-free path to reach a desired object with the other arm. The paper compares different motion planning algorithms based on random sampling methods. In the used framework the planners do not discard the samples that...
For safe human-robot interaction and co-existence, collision avoidance is a fundamental prerequisite. Therefore, in this contribution a Nonlinear Model Predictive Control approach for fixed-base and mobile manipulators is presented that allows for avoiding self-collisions and collisions with static and dynamic obstacles while performing tasks defined in the Cartesian space. The collision avoidance...
The automation of kitting tasks—collecting a set of parts for one particular car into a kit—has a huge impact in the automotive industry. It considerably increases the automation levels of tasks typically conducted by human workers. Collecting the parts involves picking up objects from pallets and bins as well as placing them in the respective compartments of the kitting box. In this paper, we present...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.