Dalian Haishi Daxue Xuebao/Journal of Dalian Maritime University
Submission Deadline ( Vol 50 , Issue 01 )
10 May 2024Publish On ( Vol 50 , Issue 01 )
31 May 2024Dear respected authors,
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Dalian Haishi Daxue Xuebao/Journal of Dalian Maritime University
Dalian Haishi Daxue Xuebao/Journal of Dalian Maritime University (ISSN:1006-7736) is a monthly peer-reviewed scopus indexed journal originally from 2007 to Present. The publisher of the journal is Editorial Office of Journal of Dalian Maritime University.The journal welcomes all kind of research/review/abstract papers regarding Engineering subjects.
Dalian Haishi Daxue Xuebao/Journal of Dalian Maritime University
2. Electrical Engineering and Telecommunication Section 3. Computer Science Section 4. Civil and Architectural Engineering Section 5. Mechanical and Materials Engineering Section 6. Chemical Engineering Section 7. Food Engineering Section 8. Physics Section 9. Mathematics Section
Dalian Haishi Daxue Xuebao/Journal of Dalian Maritime University
Parameter adaptive virtual DC generator control strategy for DC microgrid
In DC microgrid, the sudden change of load power will cause the bus voltage to fluctuate greatly, which will lead to system instability in serious cases. Aiming at this problem, a parameter adaptive control strategy of virtual DC motor based on differential compensation is proposed, taking energy storage parallel converter as the research object. The proposed strategy feeds back the output voltage deviation of the energy storage converter to the differential compensation coefficient, so that the compensation coefficient can adjust the compensation coefficient in real time following the load
An augmentation method of defect detection dataset based on M-DCGAN
Aiming at the insufficient surface defect dataset in intelligent manufacturing, an augmentation method based on M-DCGAN (Mask Deep Convolution Generative Adversarial Networks) is proposed. First, the U-Net-like structure is built by adding an upsampling module on the discriminator and increasing the discriminator's and generator's network depth; a binarization mask extraction method of defect position is designed based on Canny edge detection. Then, a defect target position attention guidance mechanism is established by defining the loss function dependent on the image mask; the spe
Current status and trends of ship navigation risk assessment in the Arctic
This paper reviewed systematically the evolution of research topics in the field of Arctic navigation safety, and summarized the application scenarios, supporting decision making, model methods, risk factors, and data sources of risk assessment. The results show that the Arctic navigation risk assessment is an important means to improve navigation safety, which mainly supports decisions on three levels: strategic level, operational level, and execution level. At present, there is still insufficient research on the frequent mechanical failures, marine pollution, propulsion system failure and
Hydrodynamic mechanism of marine rudder considering the influence of aspect ratio
In order to explore the hydrodynamic mechanism of marine rudders under the influence of different aspect ratios, the viscous CFD technology is adopted to simulate the hydrodynamic performance of marine rudders with different aspect ratios at different rudder angles. Firstly, the grid independence analysis is carried out, and the accuracy of the numerical simulation method is verified based on the experimental results. Then the hydrodynamic mechanism of the rudder is explained according to the surface pressure distribution, velocity flow field distribution and wake vortex shape of the rudder
Development and key technologies of fatigue analysis software for ship shafting in ice regions
Affected by the global warming and the melting of Arctic glaciers, the number of ships sailing on polar/ice routes is increasing. The fatigue analysis of propulsion shafting under the excitation of ice load has become a hot technical issue in the design/reconstruction of ships in ice areas. The fatigue analysis and calculation model of ship propulsion shafting under the action of ice load is established, and the method of determining the maximum peak torque of the full speed shaft section ice load, the design of S-N curve and the determination of the linear damage system are proposed. The f
Berthing plan of bulk cargo terminal considering phased and balanced utilization of loading and unloading equipment
Unbalanced use of mechanical equipment such as ship unloaders and belt conveyors in bulk cargo terminals brings about high energy consumption and labor costs. Considering the influence of ship unloaders and belt conveyors operation on ship berthing plan, based on the research on the periodic equilibrium mechanism and modeling of the unloading equipment of the bulk cargo terminal, mixed integer programming models were established to minimize the total service cost and service time of ships in the planning period. Models were solved by CPLEX. The example results show the berthing position, be
Online parameter identification of unmanned vehicle response model based on weighted forgetting multiple innovation RLS
In order to achieve accurate online modeling of the unmanned surface vehicle maneuvering motion, a new weighted strategy has been designed. This strategy can adjust the weight of the corresponding data in the parameter recursion in real-time according to the difference between the data. The proposed algorithm is validated based on experimental data from a water-jet-propelled unmanned surface vehicle. The bow angle data is predicted using the model obtained from the improved algorithm, its square root error can be reduced by about 6 °, and the maximum decision coefficient can reach 0.992