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UUV mission re-planning based on threat assessment of uncertain events
- Chinese Journal of Intelligent Science and Technology Vol. 4, Issue 4, Pages: 493-502(2022)
- 作者机构：
1. 安徽大学人工智能学院，安徽 合肥230601
2. 东南大学自动化学院，江苏 南京 210096
- 作者简介：
- 基金信息：
DOI：10.11959/j.issn.2096-6652.2022049
CLC： TP242.6-
Published Online：2022-12，
Published：15 December 2022
- 稿件说明：
移动端阅览
Xiang CAO, Changyin SUN. UUV mission re-planning based on threat assessment of uncertain events[J]. Chinese journal of intelligent science and technology, 2022, 4(4): 493-502.
Xiang CAO, Changyin SUN. UUV mission re-planning based on threat assessment of uncertain events[J]. Chinese journal of intelligent science and technology, 2022, 4(4): 493-502. DOI： 10.11959/j.issn.2096-6652.2022049.
摘要
无人水下航行器（UUV）的任务规划直接关系到水下作业的效率。由于水下环境复杂，不确定事件频发，有时UUV按照最初的规划很难完成任务。针对UUV任务规划问题，提出基于不确定事件威胁度评估的UUV任务重规划策略。首先，UUV根据任务点的分布进行初始任务规划，采用自组织网络算法为UUV规划访问多任务点的时间顺序及访问任务点的最短路径。其次，判断 UUV 执行任务过程中出现的不确定事件类型，并转换为贝叶斯网络的形式。最后，利用贝叶斯网络对不确定事件的威胁度进行评估。如果威胁度大于阈值，则 UUV 进行任务重规划；否则，UUV 按照初始规划继续执行任务。在多种不确定事件场景中进行任务规划仿真，结果显示所提的算法能够保证UUV作业的安全，且提高了任务的完成率。
Abstract
The mission planning of unmanned underwater vehicles (UUV) is directly related to the efficiency of underwater operations.Due to the complex underwater environment and frequent uncertain events
it is sometimes difficult for UUV to complete the mission according to the initial plan.Aiming at the problem of the UUV mission planning
a mission re-planning strategy based on the threat assessment of uncertain events was proposed.Firstly
the UUV performed initial mission planning according to the distribution of mission points.The self-organizing map algorithm was used to plan the time sequence of accessing multi-mission points and the shortest path for the UUV to visit the mission points.Then
the types of uncertain events were determined in the process of executing missions by the UUV and converted into the form of a Bayesian network.Finally
the Bayesian network was used to evaluate the threat degree of uncertain events.If the threat degree was greater than the threshold
the UUV performed mission re-planning.Otherwise
the UUV continued to perform the mission according to the initial plan.The simulation results of mission planning in a variety of uncertain event scenarios showed that the proposed algorithm could ensure the safety of UUV operations and improve the mission completion rate.
关键词
Keywords
references
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