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Dong W.,Wuhan University | Sheng K.,Wuhan University | Yang C.,Changjiang Wuhan Waterway Bureau | Yi Y.,Wuhan University | Yi Y.,Hechi University
International Journal of Modeling, Simulation, and Scientific Computing | Year: 2015

Since dozens years ago, various metaheuristic methods, such as genetic algorithm, ant colony algorithms, have been successfully applied to combinational optimization problem. However, as one of the members, ITO algorithm has only been employed in continuous optimization, it needs further design for combinational optimization problem. In this paper, a discrete ITO algorithm inspired by ITO stochastic process is proposed for travelling salesman problems (TSPs). Some key operators, such as move operator, wave operator, are redesigned to adapt to combinational optimization. Moreover, the performance of ITO algorithm in different parameter selections and the maintenance of population diversity information are also studied. By combining local search methods (such as 2-opt and LK-opt) with ITO algorithm, our computational results of the TSP problems show that ITO algorithm is currently one of the best-performing algorithms for these problems. © 2015 World Scientific Publishing Company.


Dong W.,Wuhan University | Dong W.,New Jersey Institute of Technology | Sheng K.,Wuhan University | Yang C.,Changjiang Wuhan Waterway Bureau | And 2 more authors.
Journal of Physics: Conference Series | Year: 2014

In this paper, a ITO algorithm inspired by ITO stochastic process is proposed for Traveling Salesmen Problems (TSP), so far, many meta-heuristic methods have been successfully applied to TSP, however, as a member of them, ITO needs further demonstration for TSP. So starting from designing the key operators, which include the move operator, wave operator, etc, the method based on ITO for TSP is presented, and moreover, the ITO algorithm performance under different parameter sets and the maintenance of population diversity information are also studied. © Published under licence by IOP Publishing Ltd.


Huang Z.,Wuhan University of Technology | Liu W.,Wuhan University of Technology | Wang X.,Wuhan University of Technology | Song X.,Wuhan University of Technology | And 4 more authors.
Proceedings of the International Offshore and Polar Engineering Conference | Year: 2016

Human usually can not work for maritime rescue at severe sea, so an intelligent trimaran USV (Unmanned Surface Vehicle) for maritime rescue is designed. Design works involve determination of ship type, intelligent navigation, intelligent collision avoidance, and intelligent control system. Firstly, trimaran is determined as ship type. Secondly, a integrated control system is designed, and then multitasking control platform of the USV is developed. Thirdly, multi-information fusion technology of multi-sensors of USV is developed. Fourthly, a algorithm of intelligent navigation and collision avoidance for USV is developed, and the technology of intelligent navigation and collision avoidance is achieved. Importantly, multimode heterogeneous network communication technology is applied for the communication between USV and base station. All technologies and equipments are applied and installed in a 5m USV and 7m trimaran USV to test the intelligent USV system for maritime rescue in a lake and river. Finally, the two model tests are used to verify the availability of equipments and systems, the systems of intelligent navigation and collision avoidance, and the system of intelligent control. © Copyright 2016 by the International Society of Offshore and Polar Engineers (ISOPE).


Fan X.,Changjiang Wuhan Waterway Bureau
Wuhan Ligong Daxue Xuebao (Jiaotong Kexue Yu Gongcheng Ban)/Journal of Wuhan University of Technology (Transportation Science and Engineering) | Year: 2013

This paper proposes a construction of Yichang flow discharge with the middle channel maintenance dimension method. Using long-term observation data, by establishing the water level regression equation of Yichang flow discharge and middle site level, combined with the actual mapping data, the corresponding relationship between Yichang flow discharge and long-distance river maintenance dimension of middle channel of Yangtze. The results of this study could provide the theoretical basis on the optimization of the three gorges reservoir scheduling scheme, reasonable channel maintenance dimension in the middle reach of Yangtze River.


Yang C.,Changjiang Wuhan Waterway Bureau
Wuhan Ligong Daxue Xuebao (Jiaotong Kexue Yu Gongcheng Ban)/Journal of Wuhan University of Technology (Transportation Science and Engineering) | Year: 2013

The measurement fee is very expensive for channel depth by traditional method, and in many case the measurement cannot be executed by big measurement boat because of adlittoral position. A new measurement method is introduced in this paper, which depends on smaller telecontrol boat. There is a measurement system which is installed on remote surveillance, it can manually remote measure or automatic measure with GPS navigation, the boat is shallow, speedy, stabilized, and it can be tellcontroled in far distant away. Because it has double dynamical systems, and automatically switched in emergency case, so high safety is guaranteed for this equipment. It has achieved a great successful since it is put into service.


Wang X.,Changjiang Wuhan Waterway Bureau
Wuhan Ligong Daxue Xuebao (Jiaotong Kexue Yu Gongcheng Ban)/Journal of Wuhan University of Technology (Transportation Science and Engineering) | Year: 2015

Simulation is one of effective tools for assessment of waterway designing. The system constitution and procedure of waterway simulation are introduced, and key technologies of waterway simulation system are analyzed, including vessel dynamics modeling, vessel traffic flow modeling, waterway scenery modeling, assessment methods, and so on. Finally, how to design the simulation system of inland waterway is prospected. ©, 2015, Wuhan University of Technology. All right reserved.

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