Results 251 to 260 of about 1,198,894 (281)
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Motion Planning in Dynamic Environments Using Velocity Obstacles
The International Journal of Robotics Research, 1998This paper presents a method for robot motion planning in dynamic environments. It consists of selecting avoidance maneuvers to avoid static and moving obstacles in the velocity space, based on the cur rent positions and velocities of the robot and obstacles.
FIORINI, Paolo, Shiller Z.
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The curvature-velocity method for local obstacle avoidance
Proceedings of IEEE International Conference on Robotics and Automation, 2002We present a new method for local obstacle avoidance by indoor mobile robots that formulates the problem as one of constrained optimization in velocity space. Constraints that stem from physical limitations (velocities and accelerations) and the environment (the configuration of obstacles) are placed on the translational and rotational velocities of ...
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Safe maritime navigation with COLREGS using Velocity Obstacles
2011 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2011This paper presents a motion planning algorithm for Unmanned Surface Vehicles (USVs) to navigate safely in dynamic, cluttered environments. The proposed algorithm not only addresses Hazard Avoidance (HA) for stationary and moving hazards but also applies the International Regulations for Preventing Collisions at Sea (known as COLREGS).
Kuwata, Yoshiaki +3 more
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Traffic Regulation Velocity Obstacles method
2019 20th International Carpathian Control Conference (ICCC), 2019The goal of this paper is to show a new concept of the reactive motion planning algorithms for mobile robots in dynamic environment using the main rules of the Traffic Regulation. At the presented solution the algorithm uses the velocity vectors and positions of the obstacles and the robot so the Velocity Obstacles (VO) method seems to be a good choice
Zoltan Gyenes +1 more
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Impact of a high-velocity drop on an obstacle
Technical Physics, 2000Processes arising when a high-velocity liquid drop strikes a rigid obstacle or a liquid layer were investigated using numerical simulation. The flow pattern being formed features a complicated interaction of compression shock and expansion waves between each other and with free surfaces, the initiation of a cumulative jet flow, and the formation of ...
A. V. Chizhov, A. A. Schmidt
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Maintaining team coherence under the velocity obstacle framework
International Joint Conference on Autonomous Agents and Multiagent Systems, 2012Many multi-agent applications may involve a notion of spatial coherence. For instance, simulations of virtual agents often need to model a coherent group or crowd. Alternatively, robots may prefer to stay within a pre-specified communication range.
Andrew Kimmel +2 more
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The Extended Velocity Obstacle and applying ORCA in the real world
2015 IEEE International Conference on Robotics and Automation (ICRA), 2015We describe the National Museum of Mathematics's Robot Swarm exhibit and our approach for achieving a reliable system for collision avoidance. The Robot Swarm exhibit allows visitors to program behaviors and interact with a “swarm” of small robots.
Amichai Levy +3 more
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A velocity obstacles approach for autonomous landing and teleoperated robots
Autonomous Robots, 2019Velocity obstacles (VO) are one of the most successful methods to compute collision-free trajectory for multi-agent systems. VO provide for each autonomous robot the set of velocities that avoids collisions with other robots (sharing or not the same motion policy) and with moving or static obstacles in the environment.
Battisti, Thomas, Muradore, Riccardo
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2019 IEEE Conference on Control Technology and Applications (CCTA), 2019
In this paper, we propose a vehicle controller which attains practical obstacle avoidance while suppressing relative velocity against moving obstacles with uncertainty. For safety locomotion, obstacle avoidance is important but the observed position of obstacles are usually contaminated by noise while their motion inevitably possesses uncertainty ...
Koji Shibata +2 more
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In this paper, we propose a vehicle controller which attains practical obstacle avoidance while suppressing relative velocity against moving obstacles with uncertainty. For safety locomotion, obstacle avoidance is important but the observed position of obstacles are usually contaminated by noise while their motion inevitably possesses uncertainty ...
Koji Shibata +2 more
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Pedestrian velocity obstacles: pedestrian simulation through reasoning in velocity space
2014We live in a populous world. Furthermore, as social animals, we participate in activities which draw us together into shared spaces -- office buildings, city sidewalks, parks, events (e.g., religious, sporting, or political), etc. Models that can predict how crowds of humans behave in such settings would be valuable in allowing us to analyze the ...
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