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Modeling And Simulation Of Initial Loading Balls And Replenishing Balls Of The Duplex Inlet & Outlet Coal Mill, Junjie Gu, Yukun Wang, Zhizhong Bai 2019 School of Energy Power and mechanical Engineering, North China Electric Power University, Baoding 071000, China;

Modeling And Simulation Of Initial Loading Balls And Replenishing Balls Of The Duplex Inlet & Outlet Coal Mill, Junjie Gu, Yukun Wang, Zhizhong Bai

Journal of System Simulation

Abstract: To solve the problems of excess of abrasion of steel balls and high power consumption used for grinding of the duplex inlet & outlet coal mill, a method that can calculate the initial balls loading, the period and quantity of adding balls for the mill is presented on the basis of building up the models of steal balls’ abrasion and motion. Setting #E coal mill as example, period and quantity of adding balls are confirmed accurately in consideration of variation of power, the maximum capacity and fineness of coal powder, compensatory quantity of each grade of balls are also …


Blind Equalization Algorithm Of Variable Segment Error Function Based On Catfish Effect Particle Swarm Optimization, Yecai Guo, Jiping Wu 2019 1. School of Electronic and Information Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China;;2. Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment, Nanjing University of Information Science & Technology, Nanjing 210044, China;

Blind Equalization Algorithm Of Variable Segment Error Function Based On Catfish Effect Particle Swarm Optimization, Yecai Guo, Jiping Wu

Journal of System Simulation

Abstract: In order to overcome the disadvantage of the slow convergence rate and big steady state error of constant modulus algorithm (CMA), a variable segment error constant modulus blind equalization algorithm based on the catfish effect particle swarm optimization algorithm (CEPSO-VSCMA) is proposed. The algorithm introduces catfish effect particle swarm optimization on the base of VSCMA, finding the globally optimal solution with the global searching of particle swarm. Meanwhile, vibrant and competitive catfish individual are employed to reactivate particle swarm and accelerate convergence. The simulation results show that the proposed algorithm performs better in improving convergence rate, decreasing inter-symbol …


Modeling And Simulation On Entities’ Belief In Cyberspace, Jiuyang Tao, Wu Lin, Xiaoyuan He, Rong Ming 2019 1. Department of Information Operation & Command Training, National Defense University, Beijing 100091, China;;2. College of Command Information Systems, PLA University of Sci. & Tech., Nanjing 210007, China;

Modeling And Simulation On Entities’ Belief In Cyberspace, Jiuyang Tao, Wu Lin, Xiaoyuan He, Rong Ming

Journal of System Simulation

Abstract: Of all cyber-attacks, 'fabrication' which is aimed at impacting one’s awareness is becoming the common means, so it is of great importance to explore ways so as to defend such attacks. An attack can success or not always rely on the entities’ belief of certain events. In this paper, two different ways of 'fabrication' attack are put forward, and three essential conditions for 'fabrication' attack are analyzed. Second, a cyberspace belief model in terms of the Dempster-Shafer framework based on situation awareness theory is built to study the evolution of the cyber entities’ belief under the 'fabrication' attack. In …


Design Of Remote Medical Care Service Robot System, Yulin Xu, Chen Ling, Li Xin, Aolei Yang, Yanran Long, Chunli Zhu, Yanbo Liu, Yuzhang Jin 2019 1. Shanghai University, Shanghai 200444, China;;

Design Of Remote Medical Care Service Robot System, Yulin Xu, Chen Ling, Li Xin, Aolei Yang, Yanran Long, Chunli Zhu, Yanbo Liu, Yuzhang Jin

Journal of System Simulation

Abstract: This paper introduces a service robot system for remote medical inspection. The robot is developed with the following functions: it is able to navigate in working area autonomously and be controlled remotely by doctors through a handheld terminal device; it is able to follow a fixed target such as nurses and doctors to reach any area; it has a touch-control interactive interface which can realize remote audio and video interaction between doctors and patients; it is embedded with portable type-B ultrasonic device, sphygmomanometer and thermometer for doctors to obtain physiological data of patients. With the above-mentioned functions, the robot …


Intelligent Diagnosis Of Aircraft Electrical Faults Based On Rmbp Neural Network, Lishan Jia, Zhe Liu, Sun Yi 2019 1. Tianjin Key Laboratory for Civil Aircraft Airworthiness and Maintenance of Civil Aviation University of China, Civil Aviation University of China, Tianjin 300300, China;;2. Ground Support Equipments Research Base of Civil University of China, Civil Aviation University of China, Tianjin 300300, China;;

Intelligent Diagnosis Of Aircraft Electrical Faults Based On Rmbp Neural Network, Lishan Jia, Zhe Liu, Sun Yi

Journal of System Simulation

Abstract: To the characteristics of multiple properties, hard to remove and high cost of time and manpower of aircraft electrical faults maintenance in aircraft maintenance of civil aviation, construction of intelligent aircraft electrical faults diagnosis system using RMBP neural network is proposed. RMBP algorithm is used to study sample data in the intelligent faults diagnosis system as it can overcome the faults of long time of convergence and easy to go into local minima of common BP algorithm, and is suitable for training large-scale neural network,. Experience data are collected, samples are made, samples training and experiment are carried out. …


Complex Network Modeling And Visualization Analysis For Ocean Observation Data, Sun Xin, Zhenhua Li, Junyu Dong, Xinyan Luo, Yuting Yang 2019 Department of Computer Science and Technology, Ocean University of China, Qingdao 266100, China;

Complex Network Modeling And Visualization Analysis For Ocean Observation Data, Sun Xin, Zhenhua Li, Junyu Dong, Xinyan Luo, Yuting Yang

Journal of System Simulation

Abstract: Ocean data analysis is one of the important foundations in marine science research. Analysis on the sea surface temperature based on complex network theory helps explore the marine dynamics in a new perspective. The ocean is divided into grids, and the annual average of the sea surface temperature is calculated to reflect the properties of the corresponding grid area. The mutual information and the Pearson correlation coefficient are used to measure the similarity between different areas. The nonlinear and linear complex network models which reflect the station of the global marine climate can be built. Finally some popular measures …


Virtual-Reality Video Fusion System Based On Video Model, Zhou Yi, Meng Ming, Wu Wei, Zhou Zhong 2019 State key Laboratory of Virtual Reality Technology and Systems, Beihang University, Beijing 100083, China;

Virtual-Reality Video Fusion System Based On Video Model, Zhou Yi, Meng Ming, Wu Wei, Zhou Zhong

Journal of System Simulation

Abstract: The aim of virtual reality integration is to reduce the visual difference of virtual object and real video image. However, it still has several problems, including heavy imagery distortion when the user deviates from the source viewport, and huge modeling cost of virtual scene. For these issues, this paper proposes a novel virtual-reality video fusion system based on video model. We firstly introduce how we register and build video model with interactive operations, then present the fusion method of video and virtual scenes. On the design and implementation stage, we introduce the architecture of our system. Finally, we …


A 3d Tree Visualization Of Network Data Based On Webvr, Lin Ding, Guoxin Huang, Xu Ying 2019 Fuzhou University, Spatial Information Research Center of Fujian, Key Laboratory of Spatial Data Mining & Information Sharing of MOE, Fuzhou 350116, China;

A 3d Tree Visualization Of Network Data Based On Webvr, Lin Ding, Guoxin Huang, Xu Ying

Journal of System Simulation

Abstract: A new method of three dimensional tree-style visualization of network data is proposed in this paper based on cluster computing, which maps the network structure of clustered data to hierarchical tree structure. The number of nodes of a community is treated as the weight to improve the PhylloTrees' phyllotactic layout algorithm and the 3D visualization of network data is implemented based on WebVR. Friendly interactive manipulations are achieved in the immersive VR scene such as rotation, zooming, pan, picking, and transparent fade / highlight enhancement of different displaying. The experimental results show that our method can show not only …


3d Wireframe Model Encryption Based On Chaos, Zhao Geng, Shuyun Zhu, Jin Xin, Xiaodong Li, Hongbo Sun, Zhili Xu, Yin Sui, Zhaohui Tian, Sun Nan 2019 1.Beijing Electronic Science and Technology Institute, University, Beijing 100070, China;;

3d Wireframe Model Encryption Based On Chaos, Zhao Geng, Shuyun Zhu, Jin Xin, Xiaodong Li, Hongbo Sun, Zhili Xu, Yin Sui, Zhaohui Tian, Sun Nan

Journal of System Simulation

Abstract: With the rapid growth of graphics data in the network environment, the security of graphics data has become a new challenge of network security that needs to be solved urgently. Encryption of 3D models is also urgent. In this paper, an encryption scheme for 3D wireframe model is proposed by using chaos mapping. The method is divided into two parts: confusion and diffuse. A random invertible matrix is generated by using logical mapping to spread the points. The side is scrambled by Arnold's cat map, then the encrypted vertices and polygons are combined to form the final encrypted 3D …


Design Of Aircraft Engine Adaptive Model Based On Improved Strong Tracking Filter, Xizhong Yang, Jianliang Ai 2019 Department of Aeronautics and Astronautics, Fudan University, Shanghai 200433, China;

Design Of Aircraft Engine Adaptive Model Based On Improved Strong Tracking Filter, Xizhong Yang, Jianliang Ai

Journal of System Simulation

Abstract: Due to deterioration under real working condition, the aircraft engine performance parameters of benchmark model don’t match the real engine. This problem was studied based on in-flight engine nonlinear real-time performance model considering the practical engineering application. Immeasurable health parameters were estimated from measurable sensor parameters by UKF (Unscented Kalman Filter) and STUKF (Strong Tracking UKF). The engine adaptive model was established through modifying the benchmark model’s performance parameters in Simulink. A method of improved STUKF was proposed. Simulation results showed that the precision of engine adaptive model was greatly increased which satisfied real-time and robustness requirements in dynamic …


Area And Centerline Distribution On Stealth Design Of S-Shaped Inlet, Le Zhang, Zhou Zhou, Xiaoping Xu 2019 1. Institute of Systems Engineering, CAEP, Mianyang 621900, China;;

Area And Centerline Distribution On Stealth Design Of S-Shaped Inlet, Le Zhang, Zhou Zhou, Xiaoping Xu

Journal of System Simulation

Abstract: Based on the conformal inlet’s size requirement of flying wing unmanned aerial vehicle (UAV), s-shaped inlets are designed with super-ellipse equation, and they are also designed in three typical centerline and area distributions of “beginning fast and end slow”, “beginning and end the same”, and “beginning slow and end fast”. The numerical simulation is verified on electromagnetic scattering characteristics of the inlet with straight cavity based on multilevel fast multipole method (MLFMM), and the stealth analysis is also carried out. And then the mechanism is analyzed combining with electric current distribution. Results indicate that with the inlet terminator open, …


Real-Time Collision Detection Of Coastline In Navigation Simulator, Qianfeng Jing, Helong Shen, Yin Yong, Xiuwen Liu 2019 Key Lab. Of Marine Simulation and Control, Dalian Maritime University, Dalian 116026, China;

Real-Time Collision Detection Of Coastline In Navigation Simulator, Qianfeng Jing, Helong Shen, Yin Yong, Xiuwen Liu

Journal of System Simulation

Abstract: In order to develop real-time collision detection module of coastline in navigation simulator, a mesh preprocessing method for coastline data is applied. The principle of meshing is established and the coastline data is meshed based on the clipping algorithm. The mesh data is stored into an appropriate data structure. The collision detection algorithm and test program are developed based on Microsoft Foundation Classes (MFC). The ship contour points and the mesh expansion method are applied to avoid error in special cases which could also improve the accuracy of collision detection. The results show that the method reduces much time …


Cell-Devs Social Interaction Modeling And Simulation For Emergency Evacuation Systems, Yanhong Wang, Wang Xia, Shaowei Wang 2019 1.School of Economy & Management, Tongji University, Shanghai 200092, China;;2. School of Management, Shanghai University of Engineering Science, Shanghai 201620;;

Cell-Devs Social Interaction Modeling And Simulation For Emergency Evacuation Systems, Yanhong Wang, Wang Xia, Shaowei Wang

Journal of System Simulation

Abstract: This paper aims to present a Cell-DEVS model for emergency evacuation systems, which behave uncertainty and are intricately driven by the social factors. The model introduces social interaction factors such as familiarity degrees, individual vision, communication and conduction, and velocity zones as the state variables, describing the relationship between the evacuees and environment, as well as the interactions with each other. The algorithm optimization enhances reality of simulation. The RESTful CD++ is applied as middleware to execute remote simulation. The results confirm the existence of social interaction. This work benefits to the architecture design, evacuation planning and …


Mesh Morphing Process For Facial Plastic Surgery Simulation, Jinfang Li, Rifu Li, Hanwu He, Junlong Xu, Jiayuan Liu, Li Hang 2019 1. School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China;;

Mesh Morphing Process For Facial Plastic Surgery Simulation, Jinfang Li, Rifu Li, Hanwu He, Junlong Xu, Jiayuan Liu, Li Hang

Journal of System Simulation

Abstract: In order to present the result of facial plastic surgery accurately, we propose a mesh morphing process method based on the grayscale texture in this paper. A grayscale texture is created by selecting the region of interest (ROI), and a set of texture coordinate is computed for the vertices in real time to establish the mapping relationship between the vertices and the grayscale texture. In order to make the morphing smooth, we blur the grayscale texture with the mean blurred processing algorithm and control the blur effect by the number of iterations. The advantages of this algorithm are as …


Research On Open Cell Effect Based On Vacation Queueing Model, Wenwen Pan, Bingyu An, Zangbo Chi, Mingmin Zhang, Zhuxin Hu 2019 1. Department of Computer, Xi'an Jiao Tong University, Xi'an 710049, China;;

Research On Open Cell Effect Based On Vacation Queueing Model, Wenwen Pan, Bingyu An, Zangbo Chi, Mingmin Zhang, Zhuxin Hu

Journal of System Simulation

Abstract: The paper analyzes the related influence factors when closed residential area is open to its surrounding roads. Using the traffic flow theory, the evaluation system of AHP and vacation queuing model based on Markov chain are established. After describing and quantifying the road traffic impact about the open community, we put forward some suggestions about the open of closed residential community. At the same time, the evaluation and improvement rate are proposed under different conditions such as changing the structure of the community, changing the surrounding road structure and changing the traffic flow off. In consideration of traffic lights, …


Key Techniques Of Remote Visualization Of 3d Seismic Volume Supporting Multi-User, Lianen Ji, Zhao Ni, Shiyi Liang, Huang Bo 2019 1. College of Geophysics and Information Engineering, China University of Petroleum, Beijing 102249, China;;2. Beijing Key Laboratory of Petroleum Data Mining, Beijing 102249, China;

Key Techniques Of Remote Visualization Of 3d Seismic Volume Supporting Multi-User, Lianen Ji, Zhao Ni, Shiyi Liang, Huang Bo

Journal of System Simulation

Abstract: During the remote visualization of large-scale seismic volume for multi-user concurrent interaction, traditional task scheduling approaches could lead to large amount of I/O operation and repetitive calculation of volume texture blocks. So, a more efficient multi-task scheduling strategy was proposed, which rearranged the schedule order of volume rendering tasks through computing their viewpoint correlation. Furthermore, an optimized design of LRU based on parallel protection lock was made. In order to improve the network transmission efficiency and quality of seismic visualization image simultaneously, and to meet the requirement of users to observe the region of interest (ROI) preferentially, the …


Rgbd Image Co-Segmentation Via Saliency Detection And Graph Cut, Xiaoyang Li, Lili Wan, Henan Li, Shenghui Wang 2019 1. Institute of Information Science, Beijing Jiaotong University, Beijing 100044, China;;2. Beijing Key Laboratory of Advanced Information Science and Network Technology, Beijing 100044, China;

Rgbd Image Co-Segmentation Via Saliency Detection And Graph Cut, Xiaoyang Li, Lili Wan, Henan Li, Shenghui Wang

Journal of System Simulation

Abstract: In order to solve the problem that it is difficult to accurately segment images with similar colors in the foreground, we propose a RGBD image co-segmentation algorithm that utilizes saliency detection and graph cut. Our algorithm not only achieves the co-segmentation of multiple images, but also uses depth data to solve the foreground and background confusion problem caused by color similarity. Depth is incorporated into a superpixel segmentation algorithm to change each RGBD image into a set of superpixel blocks. A graph model of superpixels is constructed and saliency detection is used to extend the seed nodes area. The …


Research On Parametric Modeling Of Radar Electronic Warfare Visual Simulation, Jinliang Guo, Zhang Yang, Xiaoyan Li, Xue Yuan 2019 1. China Luoyang Electronic Equipment Test Center, Luoyang 471003, China;;

Research On Parametric Modeling Of Radar Electronic Warfare Visual Simulation, Jinliang Guo, Zhang Yang, Xiaoyan Li, Xue Yuan

Journal of System Simulation

Abstract: In order to improve the versatility of electronic warfare scene simulation and reduce the repeated development, a parametric modeling approach was proposed. Based on the visual simulation development model of Vega Prime, the modular simulation architecture was designed to provide a unified design structure for parametric modeling. The method of parameter extraction and description was researched to standardize the design of simulation model parameters. Parameter constraint rules were researched to associate model parameters, avoid the conflict between parameters, and simplify parameter instantiation. A parametric visual simulation system of electronic warfare was designed and implemented. The parametric modeling process …


Physically-Based Interactive Virtual Clothing Animation Simulation, Shi Min, Junzheng Wang, Tianlu Mao, Yaning Liu 2019 1. School of Control and Computer Engineering, North China Electric Power University, Beijing 102206, China;;

Physically-Based Interactive Virtual Clothing Animation Simulation, Shi Min, Junzheng Wang, Tianlu Mao, Yaning Liu

Journal of System Simulation

Abstract: Realistic effective clothing animation simulation involves many factors, including the lifelike animation rendering, stable animation modeling, interaction control of the adjustable parameter and so on. An interactive clothing animation method based on physics is studied. According to the content feature of model and animation resources, we design an effective way of storage and provide the interface to adjust the parameters interactively. We build implicit constraint dynamics system, accelerated collision detection and the constrained optimization calculation model, and calculate clothing animation. The simulation based on Unity 3D engine is rendered to present garment animation simulation effect under different virtual light. …


Analysis Of Fuzzy Control Constant Current Charging Characteristic For Breaking And Making Capacitor Of Permanent Magnet Circuit Breaker, Peng jin, Xianbing Wang, Xiangao Wang, Xichen Ye, Wang huan 2019 School of Electronic and Electrical Engineering, Chuzhou University, Chuzhou 239000, China;

Analysis Of Fuzzy Control Constant Current Charging Characteristic For Breaking And Making Capacitor Of Permanent Magnet Circuit Breaker, Peng Jin, Xianbing Wang, Xiangao Wang, Xichen Ye, Wang Huan

Journal of System Simulation

Abstract: In order to realize the precise control of breaking and making capacitors constant current charging for the permanent magnet (PM) circuit breaker, a fuzzy constant current charging technology of breaking and making capacitors is put forward. On the basis of analyzing the working characteristics for breaking and making capacitors constant current charging, the membership functions of current deviation e, deviation changing rate ec and output variable u for breaking and making capacitors constant current and fuzzy control rules are set up. The establishment of a two-dimensional lookup table replacing the complex fuzzy control algorithm can effectively improve the …


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