Self-organizing cooperation model for ships navigating in restricted one-way waterway

Brodogradnja

Zhang, Jinfen^3¹  Liu, Jingxian^2²  Wang, Hongbo^1³  Liu, Kezhong^4⁴ 

[1] National Engineering Research Center for Water Transport Safety, Wuhan University of Technology, Wuhan, China^3;School of Navigation, Wuhan University of Technology, Wuhan, China and Hubei Inland Shipping Technology Key Laboratory, Wuhan University of Technology, Wuhan, China and National Engineering Research Center for Water Transport Safety, Wuhan University of T^2;School of Navigation, Wuhan University of Technology, Wuhan, China and Hubei Inland Shipping Technology Key Laboratory, Wuhan University of Technology, Wuhan, China^1;School of Navigation, Wuhan University of Technology, Wuhan, China^4

关键词: self-organizing;    cooperation mechanism;    restricted one-way waterway;    traffic efficiency;    delay time;    speed difference;   

DOI  :  10.21278/brod69301

学科分类：工程和技术（综合）

来源: Brodarski Institut

【 摘 要 】

An effective ship scheduling strategy is critical for the efficiency of waterway transportation, especially in restricted one-way waterways. By treating ship traffic as a distributed system, a novel Ship Self-Organizing Cooperation algorithm (SSOCA) is proposed to evaluate the effects of self-organizing cooperation between ships. An assumption is made that overtaking is not allowed under the given safety requirement. Observing that traffic efficiency is influenced by speed differences, two types of delay times, wait time and navigation time as increased by speed reductions, are applied to evaluate traffic efficiency. The mathematical model of delay time is inferred in different entry sequences subsequently. Taking advantage of the delay model, each ship makes a decision regarding its own sequence to find the local optimum iteratively. An Arena-based ship traffic model is constructed. The simulation results indicate that average delay time for ships is decreased in comparison with the First Come First Served (FCFS) model. That advantage exists for different combinations of traffic flow parameters. Moreover, a balance between efficiency and computation is also achieved by distributing the computational burden to each ship.

【 授权许可】

CC BY