Results 21 to 30 of about 17,478 (257)

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

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

Turbulence Models Studying the Airflow around a Greenhouse Based in a Wind Tunnel and Under Different Conditions

open access: yesAgriEngineering, 2022
Turbulence phenomena created around a greenhouse due to different wind loads are key factors in its structural design and significantly affect the ventilation rates through its side and roof openings.
Georgios Partheniotis   +4 more
doaj   +1 more source

Application of Improved Blocked-Off Method to Simulate the Interacting Influences of Obstacle Shape and Wall Velocity on the Turbulent Mixed Convection Flow in a Trapezoidal Cavity [PDF]

open access: yesInternational Journal of Advanced Design and Manufacturing Technology, 2022
In the current research, interaction influences of obstacle shape and top wall velocity on the hydrothermal behaviours of the turbulent mixed convection flow in a trapezoidal cavity are numerically simulated.
Meysam Atashafrooz
doaj   +1 more source

Vortex shedding frequency of a moving obstacle in a Bose–Einstein condensate

open access: yesNew Journal of Physics, 2022
We experimentally investigate the periodic vortex shedding dynamics in a highly oblate Bose–Einstein condensate using a moving penetrable Gaussian obstacle.
Younghoon Lim   +4 more
doaj   +1 more source

A classification of on-road obstacles according to their relative velocities [PDF]

open access: yesEURASIP Journal on Image and Video Processing, 2016
The systems based on image processing have numerous applications in the domain of motion control of robots and autonomous vehicles. The current paper is oriented to the solution of the problem that precedes the implementation of automatic avoidance of the on-road obstacles—how to detect them, to track in the sequence of images, and to recognize which ...
Mourad Bendjaballah   +2 more
openaire   +1 more source

A Novel Decision Support Methodology for Autonomous Collision Avoidance Based on Deduction of Manoeuvring Process

open access: yesJournal of Marine Science and Engineering, 2022
In the last few years, autonomous ships have attracted increasing attention in the maritime industry. Autonomous ships with an autonomous collision avoidance capability are the development trend for future ships. In this study, a ship manoeuvring process
Ke Zhang   +6 more
doaj   +1 more source

Obstacle Boundary Point and Expected Velocity‐Based Flocking of Multiagents with Obstacle Avoidance

open access: yesInternational Journal of Intelligent Systems, 2023
Obstacle avoidance is a key technology of multiagents flocking control. However, most existing research studies assume that the agent can obtain global information about obstacles and have specific constraints on the shape and boundary of obstacles, which easily limit their practical applications.
Jianhui Wu 0004   +3 more
openaire   +1 more source

Motion planner of mobile robots for obstacles in occluded areas

open access: yesNihon Kikai Gakkai ronbunshu, 2019
Motion planning for mobile robots considering occluded obstacles is a navigation challenge in dynamic environments. If an obstacle suddenly appears from the occluded area, a robot might collide with the obstacle. This is the occlusion problem. Therefore,
Satoshi HOSHINO, Tomoki YOSHIKAWA
doaj   +1 more source

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