A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A circle grid-based approach for obstacle avoidance motion planning of unmanned surface vehicles
https://orcid.org/0000-0002-2722-3779
Aiming at an obstacle avoidance problem with dynamic constraints for Unmanned Surface Vehicle (USV), a method based on Circle Grid Trajectory Cell (CGTC) is proposed. Firstly, the ship model and standardization rules are constructed to develop and constrain the trajectory, respectively. Secondly, by analyzing the properties of the circle grid, the circle grid tree is produced to guide the motion of the USV. Then, the kinematics and dynamics of the USV are considered through the on-line trajectory generator by designing a relational function that links the rudder angle, the heading angle, and the central angle of the circle grid. Finally, obstacle avoidance is achieved by utilizing the on-line trajectory generator to choose a safe, smooth, and efficient path for the USV. The experimental results indicate that the proposed method can avoid both static and dynamic obstacles, showing better performance in terms of distance cost and steering cost comparing with the related methods, and our method only takes 50% steering cost of the grid-based method; the collision avoidance path not only conforms to the USV dynamic characteristics but also provides a reference of steering command.
A circle grid-based approach for obstacle avoidance motion planning of unmanned surface vehicles
https://orcid.org/0000-0002-2722-3779
Aiming at an obstacle avoidance problem with dynamic constraints for Unmanned Surface Vehicle (USV), a method based on Circle Grid Trajectory Cell (CGTC) is proposed. Firstly, the ship model and standardization rules are constructed to develop and constrain the trajectory, respectively. Secondly, by analyzing the properties of the circle grid, the circle grid tree is produced to guide the motion of the USV. Then, the kinematics and dynamics of the USV are considered through the on-line trajectory generator by designing a relational function that links the rudder angle, the heading angle, and the central angle of the circle grid. Finally, obstacle avoidance is achieved by utilizing the on-line trajectory generator to choose a safe, smooth, and efficient path for the USV. The experimental results indicate that the proposed method can avoid both static and dynamic obstacles, showing better performance in terms of distance cost and steering cost comparing with the related methods, and our method only takes 50% steering cost of the grid-based method; the collision avoidance path not only conforms to the USV dynamic characteristics but also provides a reference of steering command.
A circle grid-based approach for obstacle avoidance motion planning of unmanned surface vehicles
https://orcid.org/0000-0002-2722-3779
Aiming at an obstacle avoidance problem with dynamic constraints for Unmanned Surface Vehicle (USV), a method based on Circle Grid Trajectory Cell (CGTC) is proposed. Firstly, the ship model and standardization rules are constructed to develop and constrain the trajectory, respectively. Secondly, by analyzing the properties of the circle grid, the circle grid tree is produced to guide the motion of the USV. Then, the kinematics and dynamics of the USV are considered through the on-line trajectory generator by designing a relational function that links the rudder angle, the heading angle, and the central angle of the circle grid. Finally, obstacle avoidance is achieved by utilizing the on-line trajectory generator to choose a safe, smooth, and efficient path for the USV. The experimental results indicate that the proposed method can avoid both static and dynamic obstacles, showing better performance in terms of distance cost and steering cost comparing with the related methods, and our method only takes 50% steering cost of the grid-based method; the collision avoidance path not only conforms to the USV dynamic characteristics but also provides a reference of steering command.
A circle grid-based approach for obstacle avoidance motion planning of unmanned surface vehicles
Zhu, Man (author) / Xiao, Changshi (author) / Gu, Shangding (author) / Du, Zhe (author) / Wen, Yuanqiao (author)
2023-02-01
21 pages
Article (Journal)
Electronic Resource
English
Vision-based target motion analysis and collision avoidance of unmanned surface vehicles
| SAGE Publications | 2016
Vision-based target motion analysis and collision avoidance of unmanned surface vehicles
| Online Contents | 2016
Water surface garbage cleaning unmanned ship with obstacle avoidance function
| European Patent Office | 2021
Unmanned sweeper and obstacle avoidance control system thereof
| European Patent Office | 2020
An automatic COLREGs-compliant obstacle avoidance system for an unmanned surface vehicle
| Online Contents | 2014