Modeling and Simulation of Propeller and Hull System for Marine Propulsion Plant

2011 ◽  
Vol 383-390 ◽  
pp. 2121-2125
Author(s):  
Ren Li ◽  
Wen Xiao Zhang ◽  
Hua Yan Li

Aiming at the complexity of mechanical devices and the polytrope of operating conditions for marine propulsion plant, the modeling and simulation of propeller and dull system are investigated based on MATLAB/Simulink. The simulation model of propeller and dull system is constructed in which the Chebyshev fit expression across four quadrants is given for the propeller. So it becomes practical to express static and dynamic properties of propeller and dull system. A luxury cruises fitted on two engines and two fixed pitch propellers is considered to perform simulation tests. The actual navigation conditions of marine propulsion plant, including starting, parking and reversing etc, are taken into account. The simulation results analysis illustrates the correctness and validity of modeling and simulation for propeller and dull system. Thus provides a new method for the optimization and design of marine propulsion plant.

2013 ◽  
Vol 427-429 ◽  
pp. 133-136
Author(s):  
Qiang Song ◽  
Pu Zeng

The driving theory and the dynamic characteristics of small radius steering, medium radius steering and big radius steering is analyzed, and the simulation model is established under Matlab/Simulink. Then the track bulldozers steering performance of the three sheerings is simulated. The results show that, at different steering modes, the running states of the two sides driving motors are not the same, and the track driving forces of the two sides vary widely. The track driving force is great in the small radius steering model, while small in the medium and big radius steering models. The simulation results lay the foundation for dual-motor drive track bulldozers steering performance matching.


2015 ◽  
Vol 792 ◽  
pp. 95-100 ◽  
Author(s):  
Igor S. Bolgov ◽  
Yuriy N. Dementyev ◽  
Veronika A. Bolgova

A simulation model of a pulse frequency-phase discriminator (PFPD) in the Matlab Simulink application package was developed. The main PFPD modes simulation and the analysis results were carried out. The simulation results are discussed in this paper.


2019 ◽  
Vol 9 (2) ◽  
pp. 4071-4074
Author(s):  
A. Y. Al-Rawashdeh

This paper aims at investigating the use of an induction wound rotor motor to generate voltage instead of the old diesel engines that are still used in many factories, like old cement factories, in Jordan. In this investigation, a simulation model of induction wound rotor motor was implemented using Matlab/Simulink. The excitation dc current was connected to a two-phase rotor circuit, and the voltage-current performance characteristics were investigated and evaluated under different load types. The simulation results confirmed the possibility of using the induction wound rotor motor as a synchronous generator.


2014 ◽  
Vol 602-605 ◽  
pp. 983-988
Author(s):  
Wei Liu

A double-loop control system simulation model is created in Matlab/Simulink based on mathematical model of PMSM, as well, the structures and properties of each functional module are introduced in detail. The simulation results prove that the model was effective and it had good steady-state and dynamic tracking performance. Finally, experiments were carried out to prove the validity of the simulation model in the development of practical engineering.This model provides an effective auxiliary method for theoretical analysis and engineering design of PMSM double-loop control system.


SIMULATION ◽  
2019 ◽  
Vol 96 (4) ◽  
pp. 387-402 ◽  
Author(s):  
Jianping Shang ◽  
Wenyuan Wang ◽  
Yun Peng ◽  
Qi Tian ◽  
Ying Tang ◽  
...  

The study of waterway through capacity for ports is a challenging problem due to the randomness and complexity of the waterway system, which needs to be analyzed by simulation technology. This paper quantitatively studies the influence of special ships on waterway through capacity and provides corresponding measures to improve waterway through capacity. The complex waterway system in the Port of Meizhou Bay is employed as a case study. Considering the actual conditions in the Port of Meizhou Bay, including the ships, berths, waterways, and natural conditions, a Simio-based simulation model is established. The real operation data from the Port of Meizhou Bay in 2015 are used to verify the correctness and effectiveness of the model. The simulation results show that special ships reduce the waterway through capacity by 4.9% and suggest that circumnavigation strategies that can be adopted after the extension and new construction of waterway systems can improve the waterway through capacity by 5.9%.


2014 ◽  
Vol 611 ◽  
pp. 175-182 ◽  
Author(s):  
Ľubica Miková ◽  
Michal Kelemen ◽  
Ivan Virgala ◽  
Maroš Michna

The subject of creation of simulation and mathematical models is nowadays more and more current and its application is in almost every aspect of life. The article deals with compiling a mathematical model of a pivoting arm using Lagrange equations of the second kind. Subsequently, the model will be created in the simulation program Matlab/Simulink. The simulation model will as well be assembled in the program Adams. The results of these simulations will be compared in the conclusion. This article presents a procedure for resolving a mechanical system from the beginning, from creation of a mathematical model through creation of a simulation model up to evaluation of the simulation results. This paper presents a procedure for resolving mechanical system from the beginning. Thus, it is done by creating a mathematical model through the creation of a simulation model to evaluate the results of the simulation. According to these simulations will produce a working model of the manipulator, which could be used for teaching purposes.


2013 ◽  
Vol 694-697 ◽  
pp. 795-798
Author(s):  
Gang Liu ◽  
Guang You Li ◽  
Wei Li

Some simulation and experimental researches on magnetic-valve controlled reactor (MCR) have been done in this paper. Firstly, the equivalent circuit of MCR is derived according to the operational principle. Secondly, based on MATLAB/Simulink, the simulation model is established, in addition, the simulation researches are carried out. Thirdly, a MCR, with rated voltage 220V and rated capacity 600VA, is designed and tested. Comparing the experimental results with simulation results prove the validity of simulation model.


2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Rutian Wang ◽  
Xingjun Mu ◽  
Zhiqiang Wu ◽  
Lihui Zhu ◽  
Qiufeng Chen ◽  
...  

In order to reduce the common-mode voltage (CMV) for three-to-five-phase indirect matrix converter (IMC), the CMV with the conventional modulation strategy is analyzed. A novel carrier-based PWM (CBPWM) method is proposed in this paper. The zero vectors in the inverter stage are assigned to the rectifier stage, equivalently, which are not considered in the inverter stage. The zero vectors are selected appropriately to ensure that the dc-link is connected to an input phase with the minimum absolute value, so that the larger CMV can be avoided. Then, the modulation signals are derived by the duty ratios, which are used to compare with the only one carrier signal and generate the gate pulses of switches. With the proposed method, the CMV is reduced effectively compared with the conventional modulation strategy. This method is analyzed and researched with a simulation model established by Matlab/Simulink. Simulation results are provided in detail to verify the feasibility and validity of the proposed method.


Author(s):  
Henrik C. Pedersen ◽  
Torben O. Andersen ◽  
Michael R. Hansen

The focus of the current paper is on the control of hydraulic systems when utilizing the advances that electronic control may bring with regard to power management, prioritized flow sharing and anti-stall, arising from being able to control both pump, valves and engine electronically. A simple model of a backhoe loader is first presented. Based on this model and the dynamic properties of the system, a generally applicable power management algorithm is developed based on an optimization procedure, which takes into account the dynamics of the system and different modes of operation and saturation. Finally the algorithm is verified through simulation results and the possibilities and limitations of the algorithm are discussed.


1977 ◽  
Vol 1977 (1) ◽  
pp. 303-307 ◽  
Author(s):  
Laurence B. Solsberg

ABSTRACT During the past three years, the Research and Development Division of the Environmental Emergency Branch of Environment Canada has undertaken the field evaluation of 10 generic classes of commercially-available oil skimmers. Included in this program was the examination of three prototype machines developed in Canada. The field trials were designed to allow for the assessment of the skimmers in actual operating conditions in both summer and winter environments. In this regard, three petroleum types–bunker, crude and diesel oil—were used in testing the mechanical devices under study in the coastal harbours of Halifax, Vancouver and Victoria and in the St. Lawrence River at Quebec City. Results indicate that for contained spills, a sorbent rope system, a hydro-adjustable weir and oleophilic disc skimmer exhibited relatively higher oil recovery rates. A sloping weir device with oil/water separation capability was determined to be effective in a current situation over a range of sea states. For an uncontained slick or situation which would otherwise require the use of a mobile skimmer, an inverted oleophilic endless belt appeared to be the most versatile device tested. Other skimmers tested were determined to be effective for the recovery of specific oil types in more narrowly-defined conditions.


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