Results 11 to 20 of about 122,909 (277)

USV Dynamic Accurate Obstacle Avoidance Based on Improved Velocity Obstacle Method

open access: yesElectronics, 2022
Unmanned surface vehicle (USV) path planning is a crucial technology for achieving USV autonomous navigation. Under global path planning, dynamic local obstacle avoidance has become the primary focus for safe USV navigation. In this study, a USV autonomous dynamic obstacle avoidance method based on the enhanced velocity obstacle method is proposed in ...
Jia Wang   +4 more
openaire   +3 more sources

Assessment Method Based on AIS Data Combining the Velocity Obstacle Method and Pareto Selection for the Collision Risk of Inland Ships

open access: yesJournal of Marine Science and Engineering, 2022
A ship collision risk assessment model is an essential part of ship safety navigation. At present, the open water collision risk assessment model (such as the closest point of approach) is applied, but a ship collision risk model suitable for inland ...
Yan Wang   +3 more
doaj   +3 more sources

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

A trajectory planning method for the redundant manipulator based on configuration plane

open access: yesInternational Journal of Advanced Robotic Systems, 2021
This study focuses on the method of trajectory planning of spatial obstacle avoidance for redundant manipulators based on configuration plane method.
Yanhui Wei   +3 more
doaj   +1 more source

Ship collision avoidance control based on improved velocity obstacle method

open access: yesJournal of Physics: Conference Series, 2023
Abstract The velocity obstacle method has extensive research in collision avoidance, which uses circles to represent robots or ships to find a collision-free velocity. To better describe the motion characteristics of ships, an improved velocity obstacle method based on elliptical ship domain is proposed in this paper.
Fangwei Luo, Jie Yang
openaire   +1 more source

Novel Method of Obstacle Avoidance Planning for Redundant Sliding Manipulators

open access: yesIEEE Access, 2020
In this paper, a weighted additional deviation velocity on the basis of the gradient projection (GP-WADV) method is proposed to solve obstacle avoidance problems of the redundant manipulator under the condition of known end-effector trajectory.
Jinguo Liu   +3 more
doaj   +1 more source

Trajectory generation for road vehicle obstacle avoidance using convex optimization [PDF]

open access: yes, 2010
This paper presents a method for trajectory generation using convex optimization to find a feasible, obstacle-free path for a road vehicle. Consideration of vehicle rotation is shown to be necessary if the trajectory is to avoid obstacles specified in a ...
Betts J. T.   +6 more
core   +1 more source

High-Velocity Estimates for Schr\"odinger Operators in Two Dimensions: Long-Range Magnetic Potentials and Time-Dependent Inverse Scattering [PDF]

open access: yes, 2014
We introduce a general class of long-range magnetic potentials and derive high velocity limits for the scattering operators in quantum mechanics, in the case of two dimensions.
Ballesteros, Miguel, Weder, Ricardo
core   +1 more source

An ADS-B Information-Based Collision Avoidance Methodology to UAV

open access: yesActuators, 2023
A collision avoidance method that is specifically tailored for UAVs (unmanned aerial vehicles) operating in converging airspace is proposed. The method is based on ADS-B messages and it aims to detect and resolve conflicts between UAVs.
Liang Tong   +4 more
doaj   +1 more source

Detection and estimation of moving obstacles for a UAV [PDF]

open access: yes, 2019
In recent years, research interest in Unmanned Aerial Vehicles (UAVs) has been grown rapidly because of their potential use for a wide range of applications.
Copot, Cosmin   +2 more
core   +2 more sources

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