Proceedings of the 2015 International Conference on Modeling, Simulation and Applied Mathematics

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92 articles

Dynamic Model and Simulation of a MW-class Variable Speed Constant Frequency Doubly-Fed Wind Turbine Generator System

Shaobo Li, Wanxia Wang, Jie Hu, Guanci Yang
By using Matlab/Simulink as a development and simulation platform, a wind turbine simulation-testing system was designed with the data from GH Bladed software and IEC61400-1 standard. Moreover, a whole dynamic model of a MW-class variable speed constant frequency Doubly-Fed wind generator is presented,...

The Mathematical Modeling and software Simulation for Ship Oil Purifier System

Ning Zhang, Zhipeng Shen, Changsheng Dai, Haiwei Wang
There are lots of limitations in ship oil purifier practical training system. Most of the simulation system is given priority to hardware simulation and it isn’t convenient to use. For this purpose, it’s necessary to design a software simulation platform to help students to master the application of...

Unified Control of Single-stage Z-source Grid-connected Photovoltaic System with Harmonics and Reactive Power Compensation

Jingwei Zhang, Honghua Wang, Chengliang Wang, Zhebei Wang, Wei Han, Rong Sun
Based on conventional single-stage grid-connected photovoltaic (PV) Z-source inverter, the unified control combining with harmonic and reactive power compensation is proposed. The grid harmonics and reactive current are measured while PV system outputting power. Then corresponding reactive power compensation...

Multiscale Simulation for Highly Oscillatory Parabolic Model

Meiling Sun, Geliang Chen
A multiscale finite element simulation is presented to solve a parabolic problem efficiently. This parabolic model has highly oscillatory coefficient, which make the conventional methods expensive costs or bad behaviors. The new multiscale finite element scheme, whose multiscale basis functions may reflect...

Analysis of Key Component in Progressive Collapse Process of Offshore Jacket Platforms

Hong Lin, Lei Yang
Progressive collapse, which is disproportional to the extent of initial damage, often brings a serious damage, even final failure to the structure, so it has attracted widespread attentions over the engineering field. In the design of offshore jacket structures for resisting progressive collapse, it...

A Hybrid Model for Wind Speed Prediction based on Spatial Correlation

Dong Wang, Jianping Fei, Haidong Qian, Yuhong Zhao
The accurate prediction of wind speed is greatly significant for evaluating the security and economy of the wind farm which is connected to the grid. This paper proposed a hybrid model for wind speed prediction based on spatial correlation and nonlinear state space model. Firstly, a rank correlation...

Oscillating Agent Model in Terms of Adapted Orch OR Theory

Darius Plikynas
In this multidisciplinary paper, there are some explanatory sources provided that pertain to the oscillating agent model (OAM), which is an intrinsic part of the novel oscillations-based multiagent system (OSIMAS) paradigm. The agent’s oscillating nature is inferred by empirical neuroscience observations....

Aerodynamic Performance Modeling and Optimization of Small Scale Wind Turbine Rotors

Athwel Gamarallage, Thusitha Sugathapala
This paper presents aerodynamic performance modeling and optimization of small scale wind turbine rotors for off-grid electricity generation applications targeting local manufacturing through simplification of blade geometry with constant chord and linear twist. The classical momentum theory and blade...

Development of Liver Injury Simulation Model Using MPS Method

Yoshiki Hirahara, Ken-ichi Tsubota, Sota Yamamoto
The purpose of this work is developing the injury analysis model that can be expressed liver damage state by the Moving Particle Semi-implicit (MPS) method. In this paper, we set the material properties of the liver by simulating material test using the simplified geometric model that can represent the...

The Influence of Different Important Map for Image Retargeting

Zijuan Zhang
Under the condition of limited resources of the display, image resizing has become a hot issue in the field of image processing. Image retargeting algorithm can satisfy these conditions simultaneously: protecting the important content of the source information; avoiding the important content of excessive...

Analysis of PMP Module Using Mesh Generation Techniques

Joon Seong Lee
Consumers are generally required the use of high energy density batteries. However, most consumers are often dissatisfied with the battery life from even the most advanced lithium-ion rechargeable batteries in mobile phone. All In recent years, plastic products have become thinner and lighter and proper...

New Developments for Improved Simulation of Interconnects Based on Method of Moments

Sergei Kuksenko, Talgat Gazizov, Alexander Zabolotsky, Roman Ahunov, Roman Surovtsev, Vasiliy Salov, Egor Lezhnin
The paper gives arguments for the topicality of electromagnetic compatibility modeling. Trends of electromagnetic simulation software development are stated. General simulation process based on method of moments is described. On examples of interconnects the improvement of simulation is shown, obtained...

Stability of Balanced Implicit Method for Hybrid Stochastic Differential Equation

Sheng Xu, Baocang Xia, Shaobo Zhou
The paper shows that the balanced implicit method reproduces the moment exponentially stable for hybrid stochastic differential equation. The balanced implicit method has better behavior of stability in comparison with the explicit Euler-Maruyama method. Experiments simulation indicates that the balanced...

Generating and Mathematical Modelling of Discontinuous Impulse Waveforms

Pavol Štefanec, Mariana Be ová, Branislav Dobrucký, Oleg Vyacheslavovich Chernoyarov
Paper deals with mathematical modelling of impulse waveforms and impulse switching functions used in electrical engineering. Impulse rectangular waveforms are created by periodical trigonometric functions with modulo , so, the waveforms are discontinuous and strongly non-harmonic ones. Impulse switching...

Rotary Liner Hanger Bearing Roller Modeling and Modification Based on Solidworks Secondary Development

Weiqing Li, Zhijun Niu, Jin Xu
The main failure form of the rotary liner hanger bearing is roller end breakage in the drilling engineering. Some modification methods are applied to solve this problem, however, the modification formula is very complex and calculation process need to be repeated, which may lead to calculating negligence,...

Improvement of Air Fuel Ratio Model Using a Least Absolute Shrinkage and Selection Operator

Chanyut Khajorntraidet, Tielong Shen, Kazuhisa Ito
The improvement of an air-fuel ratio model based on in-cylinder pressure measurement is presented. This model has been applied for calculation of static air-fuel ratio of spark ignition (SI) engines. In addition, it can be replaced the lambda sensors in feedback air-fuel ratio control systems. However...

The Existence and Simulations of Periodic Solution of Predator-prey Models with Impulsive Perturbations and Holling Type III Functional Responses

Kaihua Wang, Zhanji Gui
In this paper, a criterion for the existence of periodic solutions of predator-prey models with impulsive perturbations and Holling type III functional responses is established using the continuation theorem of coincidence degree theory and analysis techniques. Further, some numerical simulations show...

Deconvolution Estimation of the Density for Mixed Measure

Filali Mostafa, Sabre Rachid
Consider a random variable whose measure probability is the sum of an absolutely continuous part with respect to the Lebesgue measure and a discrete measure. In this work is provided a deconvolution estimator density of the continuous part and also the estimated amplitudes of discrete part when the observations...

Simulation of Technological Parameters Changing with the Satiation Effect

Gennadiy Rubin, Marina Polyakova, Gennadiy Gun
Dynamics of several processes quantity parameters has S-shape curve character. It is proved by the fact that process may be described by two parameters: potentional limit of the growth and resource determinating this growth. Firstly such processes were investigated in biology. Later this approach was...

The Research on Game Theory of Resources for Free Based on Personal Beliefs

Wei Zhang, Shuifang Yin
Problems of resources for free often be associated with personal interests. Personal beliefs make people choose to get resources differ in time,so-called first come first served rule. So people access to resources constitute a game under the conflict of interests. In this paper, we study two men’s personal...

Knowledge Assessment Supported by Interval Numbers and Concept Lattices-Knowledge assessment

Sylvia Encheva
Selection of an optimal knowledge assessment method appears to be a multiple criteria decision making problem among many other things. There is hardly any doubt that working with humans knowledge is always done in the presence of uncertainties. It is also not a secret that a large number of experts in...

Algorithms for the Detection of a Signal with Unknown Amplitude and Duration against White

Yury E. Korchagin, Alexandra V. Salnikova, Oleg V. Chernoyarov, Boris I. Shakhtarin
We synthesized the quasi-likelihood and maximum likelihood algorithms for the detection of a free-form signal with unknown amplitude and duration against Gaussian white noise. We illustrated the methods for calculation of the characteristics of their operating effectiveness and also we found the analytical...

An Analysis of Factors Influencing the Development of Chinese Coalbed Methane Industry

Chuanping Zhang, Qian Zhao
On the basis of the Delphi method, the indicators / variables that impacted system, were inquired and analyzed by using principal component analyses and factor analysis techniques; the factor equations were exploring utilized: comprehensive latent factors was acquired by solving overdetermined equations,...

Vehicle Routing Problem with Simultaneous Delivery and Pickup for Cold-chain Logistics

Yingfeng Ji, Hualong Yang, Yong Zhou
In View of the vehicle routing problem with simultaneous delivery and pickup (VRPSDP) for cold-chain logistics, this paper analyzed the cost structure of vehicle fixed cost, running cost, refrigerating cost and cold-chain goods deteriorating cost in the process of delivery and pickup. By minimizing the...

Non-signalized T-shaped Intersections Mixed Traffic Flow Study

Wenfang Feng, Yize Li, Changsheng Zhu
Combining actual city T-shaped intersection traffic conditions in this paper, we propose a cellular automaton model of mixed traffic flow at T-shaped intersection. In order to avoid a collision between vehicles and gridlock phenomenon occurs, running vehicle in the model adopted the principle of major...

Fatigue Life Prediction of an Impeller Based on Fracture Mechanics

Lei Wang, Tianzhong Sui
Welding structure is widely used in impellers fitted on the large centrifugal compressor and the crack propagation life prediction is studied based on the fracture mechanics. First the finite element structure strength analysis is carried on the three-dimensional entity model of the impeller, and the...

The Influence of Coupling Misalignment on Dynamic Characteristics of Helical Gear System

Jian Xu, Feiyun Cong, Shuiguang Tong, Yi Zhou
The shaft misalignment usually causes the severe vibration of rotating machine. In this paper, a three-dimensional dynamic model of a coupled gear–rotor system is developed to simulate this phenomenon. The numerical simulation of the dynamic characteristics is performed to analyze the effects of both...

The Software Architecture of the Physolator–a Physical Simulation Framework

Dirk Eisenbiegler
Physolator is Java based physics simulation framework. Physolator supports an object oriented style for building physical models. This article describes Physolators core architecture and it explains how the framework architecture contributes to building physical simulations in a modular, object oriented...

Modeling and Simulation on Complex System Life Cycle Risk Dynamic Evolution

Yifan Xu, Jianwei Lv, Peng Di, Zongren Xie
Complex system life cycle management is system engineering involving high technology, high investment and high risk. This paper studied risk evolution and risk level distributions on different stages during complex system life cycle. Taking into account risk propagation and feedback influence, the risk...

Research on the Application of the Concept of Extreme Mode

Wei Liu, Chenyu Liu, Jianyuan Gao, Xiaohong Chen
A new concept is often the result of practice requires. On the basis of the concept of modal, this paper puts forward the concept of Extreme Mode. The Extreme Mode not only contains the total number of units in the most sign values, also contains various units of the number of times many sign values,...

Method for Automatic Construction of Queuing System Models

Eimutis Valakevicius, Tomas Lazauskas
In the paper is suggested a method for automatic creation of queuing system models. For description of a stochastic system we use the schematic structure of the system based on schematic structure of designed components. The performance of a system is described by Markov chains. A phase-type approximation...

Modelling of Dynamical Properties of a Resonant Converter under Step Frequence- and Loaded Converter Changes

Michal Prazenica, Slavomir Kascak, Juraj Koscelnik, Ivan Lovas
Paper deals with investigation of two problems: frequency step changes, and step switching-off of the load of LCTLC resonant inverter. Since the changes of frequency in the range from fmin to fmax are desirable to be the input current of the LCTLC circuit not greater than nominal one, the load changes...

A Multi-objective Optimization Evaluation Based on Experimental Datum

Lei Wang, Tianzhong Sui
Aiming at multi-objective optimization problem of black-box system, the model of multi-objective optimization ED-ANN-NGA-FCE (Experimental Design-Artificial Neural Networks-Niche Genetic Algorithm-Fuzzy Comprehensive Evaluation) is established. A fuzzy evaluation for multi-objective Pareto-optimal set...

The Quickest Delivery on the Super Pipeline Based Logistic System

Zhongyuan Lai, Hao Li, Tonghui Qian, Bo Wang
In this paper, we consider the problem of delivering replenishments from source to sink nodes on a delivery line in minimum time interval, where the halfway stopping and intercrossing are forbidden. We call this problem the quickest delivery problem, and define it in a mathematical way. We point out...

Systemic Research of Grid Upscaling on the Numerical Simulation of Oil Reservoir

Ziyi Liu, Jianwei Gu
Reservoir description needs to transform its geological model to a simulation model by means of dividing grids. Grid upscaling can reduce the number of geologic model’s grids, at the same time it can match the real geosphere. For further to see the impact characteristics of grid upscaling on the results...

The Optimization Model of Flat Folding Table

Tian’e Wang, Jian Li, Taiyang Niu, Baiqiang Guo
With the rapid development of industry design, the convenience and beautiful degree of the table got the attention of people, due to the folding table is easy to use and easy to transport, it has become an indispensable furniture in hotels, exhibitions and other places. Flat folding table design concept...

Thermal Model and Analysis for Power Driver Circuit of Brushless DC Motor

Zhigang Gao, Jun Zhou, Peng Li
To solve the problem of the high temperature of the power driver circuit of BLDCM(Brushless DC Motor) which causes by the tardy heat dissipation, the thermal numerical model was built. The simulation results indicate that the thermal field distribution of the three-phase bridge power driver circuit is...

Effect of Temperature on the Nanoparticles Agglomerates Fluidization

Ali Asghar Esmailpour, Reza Zarghami, Navid Mostoufi
The effect of temperature on the fluidization behavior of nanoparticles agglomerates in a fluidized bed was investigated. Moreover, a model was developed based on the force balance between drag, collision, buoyancy and gravitational forces as separation forces and van der Waals force as the attractive...

A Sleep-Awakening Communication Technology for Transmission Line Network

Jiang Zhu
Equipment on the transmission line generally works in the absence of the utility of the wild environment. When using solar, wind and other power supply, communications equipment will be faced with the problem of power consumption. Communication technology proposed in this paper, aimed at solving low...

Positive Solution for P-laplace Problems with Nonlinear Time-fractional Differential Equation

Shifeng Zhang, Jihe Wang, Zhiyang Jia, Qijiu Yang
In recent years, fractional differential equations are widely used in the many academic disciplines--viscoelastic mechanics, Fractal theory and so on. Furthermore, fractional differential equations can be used to describe some abnormal phenomenon. For instance, fractional convection-diffusion equation...

On A Fullerene with 458 Carbons-Containing 8 heptagonal rings

Francisco Javier Sánchez-Bernabe, Javier Salcedo
A Fullerene with pentagons, hexagons, and heptagons is considered. The number of carbons is 458. It contains 8 heptagonal rings, 21 pentagons, and 212 hexagons.

Criminal Statistics Analyzing Based on Deep Learning Methods

Xuepeng Huang, Jianhui Lin
Social Security Administration analysis is studied based on intensive probe to present social fluctuation researches. A complex social system model is constructed by profile vector of complex system. According to the character of the complex social system, a simplified algorithm based on deep learning...