Results 1 to 10 of about 142,166 (292)

Dynamic Obstacle Avoidance for Unmanned Underwater Vehicles Based on an Improved Velocity Obstacle Method [PDF]

open access: yesSensors, 2017
In view of a dynamic obstacle environment with motion uncertainty, we present a dynamic collision avoidance method based on the collision risk assessment and improved velocity obstacle method.
Wei Zhang   +5 more
doaj   +7 more sources

The Hybrid Reciprocal Velocity Obstacle [PDF]

open access: yesIEEE Transactions on Robotics, 2011
We present the hybrid reciprocal velocity obstacle for collision-free and oscillation-free navigation of multiple mobile robots or virtual agents. Each robot senses its surroundings and acts independently without central coordination or communication with other robots.
Jamie Snape   +3 more
openaire   +3 more sources

Autonomous Obstacle Avoidance Algorithm for Unmanned Surface Vehicles Based on an Improved Velocity Obstacle Method

open access: yesISPRS International Journal of Geo-Information, 2021
Focusing on the collision avoidance problem for Unmanned Surface Vehicles (USVs) in the scenario of multi-vessel encounters, a USV autonomous obstacle avoidance algorithm based on the improved velocity obstacle method is proposed.
Jia Ren, Jing Zhang, Yani Cui
doaj   +3 more sources

Reciprocally-Rotating Velocity Obstacles [PDF]

open access: yes2014 IEEE International Conference on Robotics and Automation (ICRA), 2014
This research supported in part by NSF awards CNS-0551685, CCF-0833199, CCF-0830753, IIS-0916053, IIS-0917266, EFRI-1240483, RI-1217991, by NIH NCI R25 CA090301-11, by Chevron, IBM, Intel, Orale/Sun and by Award KUS-C1-016-04, made by King Abdullah University of Science and Technology (KAUST).
Andrew Giese   +2 more
openaire   +1 more source

Cooperative Obstacle Avoidance for Multiple UAVs Using Spline_VO Method

open access: yesSensors, 2022
In order to solve multiple unmanned aerial vehicle (UAV) dynamic collision avoidance, a cooperative obstacle avoidance algorithm considering UAV’s kinematic constraints has been developed.
Mingzhu Peng, Wei Meng
doaj   +1 more source

Analysis of an average velocity of a pipe with flowing fluid in case of a hydraulic obstacle

open access: yesLietuvos Matematikos Rinkinys, 2000
Calculation of average velocity of a fluid flow inside a pipe with an asymmetrical obstacle was carried out. Calculations consider flow maximum velocity co-ordinate to move in proportion with the obstacle thickness.
Rimantas Didžgalvis   +2 more
doaj   +3 more sources

Ensuring Robot-Human Safety for the BD Spot Using Active Visual Tracking and NMPC With Velocity Obstacles

open access: yesIEEE Access, 2022
When humans and robots operate in and occupy the same local space, proximity detection and proactive collision avoidance is of high importance.
Samuel Karlsson   +2 more
doaj   +1 more source

Numerical Study of the Effects of a Hot Obstacle on Natural Convection Flow Regimes [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2023
A numerical study was conducted for natural turbulent and laminar convection induced by a circular hot obstacle in two different positions, the heat obstacle is introduced at the inlet of the cylinder and inside the cylinder.
Z. Yahya, A M. Mahmoud
doaj   +1 more source

UAV dynamic obstacle avoidance based on improved reciprocal velocity obstacle

open access: yesJournal of Physics: Conference Series, 2022
Abstract This paper aims to solve the problem that when the UAV flies from the starting point to the target point in the velocity space, the obstacle avoidance speed provided by the mutual velocity obstacle method will appear too large turning angle in order to avoid dynamic obstacles.
Jing Gao   +3 more
openaire   +1 more source

An Obstacle Avoidance and Trajectory Tracking Algorithm for Redundant Manipulator End

open access: yesIEEE Access, 2022
An obstacle avoidance algorithm was suggested in this study to handle the redundant manipulator’s end trajectory planning problem, with the accuracy of the end trajectory guaranteed to be within the projected error.
Hao Yang   +3 more
doaj   +1 more source

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