Combinatorial Optimization Of Resolution Level In Three-Dimensional Visualization,
2020
1. College of Computer Science and Technology of Henan Polytechnic University, Jiaozuo 454000, China; ;
Combinatorial Optimization Of Resolution Level In Three-Dimensional Visualization, Yanyang Zeng, Zhenhai Yu, Weidong Liu
Journal of System Simulation
Abstract: In the process of developing three-dimensional visualization, it is necessary to select and adjust the combined solutions of the resolution hierarchy of multiple models. If only by artificial attempting will lead to the more times of iteration and lower design efficiency, therefore, a method, combinatorial optimization of models' resolution level, is proposed. Image information entropy is introduced for evaluating the image quality of the scene. According to the assessed value of visual effects and it is provided to the above method based on particle swarm optimization (PSO), the models with the resolution hierarchy can be matched and reorganized. Through …
Intelligent Combination Of Discrete Lod Model For 3d Visualization Based On Visual Perception And Information Entropy Fusion,
2020
1. Marine College, Northwestern Polytechnical University, Xi'an, 710072, China; ;2. National Key Laboratory of Underwater Information Process and Control, Xi'an, 710072, China;
Intelligent Combination Of Discrete Lod Model For 3d Visualization Based On Visual Perception And Information Entropy Fusion, Che Li, Fengju Kang
Journal of System Simulation
Abstract: With respect to the problem that single-index evaluation of visual quality in the process of intelligent combination of discrete Level-of-Detail (LoD) model for three-dimensional (3D) visualization can easily result in low reliability. Human visual perception and information entropy based multi-index fusion intelligent combination of discrete LoD model algorithm was proposed. Through analyzing the visual perception based image quality evaluation index, multi-index fusion evaluation intelligent combination of discrete LoD model framework was built. Comparative experiment with single index model combination bases on PSO method was designed. Model combination optimizing process utilized modified Particle Swarm Optimization (PSO) method which was strengthened …
3d Flight Simulation System Visualization And Study Of Google Earth,
2020
The Unit 95934 of PLA, Cangzhou 061736, China;
3d Flight Simulation System Visualization And Study Of Google Earth, Junyu Wang, Bin Cheng, Chuan Wang, Ren Jian
Journal of System Simulation
Abstract: Through the secondary development of Google Earth, flight training simulation system for visualization of realization, the system used B/S structure, the client browser using Google Earth, all the development on the server side. Mathematical model of aircraft was constructed; 3D modeling software SketchUp was used to establish a realistic fighter jets, missiles, high and low speed flame and other 3D model; the established 3D models was imported into Google Earth; by Microsoft VC ++ 6.0, the secondary development on Digital Earth was achieved, and the control of aircraft and other 3D models was realized; Matlab was used to verify …
Track Planning For Unmanned Aerial Vehicles Based On Wolf Pack Algorithm,
2020
1. Air Force Engineering University, Xi'an 710051, China; ;
Track Planning For Unmanned Aerial Vehicles Based On Wolf Pack Algorithm, Yonglan Liu, Weimin Li, Husheng Wu, Wenjing Song
Journal of System Simulation
Abstract: Along with the diversification of missions that unmanned aerial vehicles (UAV) can carry out, track planning becomes basic precondition of UAV fulfilling missions successfully. Aiming to these, a method of track planning based on Wolf Pack Algorithm (WPA) was proposed. The method of equivalent terrain simulation was used to make enemy's threatens and terrain obstacles equal to peaks, thus the scene of track planning of UAV was built. Based on the scene, the WPA that extracted three intelligent behaviors including scouting, summoning and beleaguering was adopted to plan the track of UAV, whose start point and end point had …
Research On Online Interaction Simulation Method Of Uav Flight Control System,
2020
Beijing Electromechanical Engineering Institute,Beijing 100074;
Research On Online Interaction Simulation Method Of Uav Flight Control System, Zhang Qing, Ran Jian, Yujun Hou
Journal of System Simulation
Abstract: UAV is widely applied to a variety of areas, for the huge advantages of remote controlling flight trajectory, iterant recovery and flexible mission payloads flight. The routine design methods for aerocraft control system cannot supply desire of UAV high accuracy flying and replying diversified compositive disturb. System composition and departmental function of UAV flight control system were introduced. An online interaction simulation method of UAV flight control system was advanced. The principle and principle of online interaction simulation were analyzed. The key techniques of constituting fiducial simulation model, real time updating and revising simulation model, on-line detecting a mass …
Study On Optimization Of Loading Plan In Car Carrier Of Vehicle Logistics Transportation,
2020
Research Institute of Chemical Defence,Beijing 102205,China;
Study On Optimization Of Loading Plan In Car Carrier Of Vehicle Logistics Transportation, Qin Liang, Zhicheng Wang, Meng Lei, Deru Deng, Zhiyun Zou, Xijie Gai, Yuqing Guo, Wenqiang Feng
Journal of System Simulation
Abstract: The car carrier load transportation allocation problem is a typical problem in vehicle logistics. In order to improve the efficiency of transport and reduce the cost, this problem was studied by adopted hypothetical data and requirements. All the load combinations whose utilization factor of the length of sweeping board is more than 95% established a matrix. Then the dynamic programming obtained the number of car carrier to the corresponding loading plan. By using the exhaustion method, through computer simulation, loading plan of each layer of car carrier was randomly produced, strictly meeting the loading requirements of each car at …
Simulation And Application Of Dkipso-Svc Combined Model For Credit Risk Assessment,
2020
College of Computer Science, Inner Mongolia University, Hohhot 010021, China;
Simulation And Application Of Dkipso-Svc Combined Model For Credit Risk Assessment, Zhenhai Wan, Tieying Liu, Zhang Yang, Jishuang Li
Journal of System Simulation
Abstract: In order to improve the problem of inefficient parameter selection of the GDS-SVC model and DIPSO-SVC model, and utilize the generalization ability and robustness of support vector classification (SVC), the reduction factor of location updating was introduced based on the dynamic improvement Particle Swarm Optimization (DIPSO), and then the DKIPSO-SVC of parameters selecting in SVC was established based on DKIPSO. The method was applied to credit scoring of commercial banks. The simulation results demonstrate that the robustness of the DKIPSO-SVC model is better than DIPSO-SVC. But beyond that, the accuracy of DKIPSO-SVC model achieves 96.6049%, higher than that of …
Application Of Ansys To Reliability Analysis Of Prefabricated Steel Bridge,
2020
PLA 63956 Troops, Beijing 100036, China;
Application Of Ansys To Reliability Analysis Of Prefabricated Steel Bridge, Yinlong Zhang, Li Bo, Shichuan Bian
Journal of System Simulation
Abstract: Prefabricated steel bridge is a temporary or semi-permanent bridge structure. When the vehicles pass through the bridge, large internal force and deformation of the bridge structure will occur, and higher requirements of the bridge structure reliability are put forward. Probabilistic analysis design is an analysis technique for assessing the effect of uncertain random input parameters and assumptions on a finite element calculation model. Making use of the Probabilistic Design System, which is offered by the large universal finite element analysis program ANSYS, the reliability analysis of deflection, bend stress and compression member stability of a main truss structure of …
New 2d Flow Visualization Method Based On Mutual Information And Image Fusion,
2020
1. Lishui University, Lishui 323000, China; ;
New 2d Flow Visualization Method Based On Mutual Information And Image Fusion, Weihua Shen, Shengbo Wang, Zhigeng Pan
Journal of System Simulation
Abstract: A overview of flow visualization method based on information theory was made. After a comparative analysis of several classic two-dimensional flow visualization techniques, the concept of mutual information from information theory and image fusion technique was used to deal with the existing classical two-dimensional flow visualization techniques. A new two-dimensional flow visualization technique was obtained. The visualization results of the new method is very well.
Technical Reference Framework For Semantic Interoperation Between Combat Simulation Systems And Command & Control Systems,
2020
Department of Equipment Command and Administration, Academy of Armored Force Engineering, Beijing 100072, China;
Technical Reference Framework For Semantic Interoperation Between Combat Simulation Systems And Command & Control Systems, Xiangzhong Xu, Zaijiang Tang, Yaxin Tan
Journal of System Simulation
Abstract: Military training, equipment demonstration, war-fighting test and other applications pose great requirements on the semantic interoperation between combat simulation systems and command & control (C2) systems. The heterogeneity between combat simulation and C2 systems was analyzed from the following aspects, such as architecture, information interaction models, communication protocols and databases. Then a layered technical reference framework was proposed to solve this thorny issue in a comprehensive way, which consists of accession layer, resource layer, semantic interaction layer, service layer and application layer. Its effectiveness was demonstrated against an application use-case. Research results are helpful to make out an engineering …
Design & Implement On Virtual Scheduling System Of Great Square Art Performance,
2020
School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China;
Design & Implement On Virtual Scheduling System Of Great Square Art Performance, Lv Desheng, Guo Yan
Journal of System Simulation
Abstract: The work of great art performance in square has a great deal of dynamic visual effects scenes, which combines with formation variation, beautiful music, unique clothing and colorful light. According to the requirements of improving efficiency for scheduling section in handwork performance such as inefficient manual drawing, time-consumed and costly rehearsal, it is an effective way to use technology of computer simulation so as to implement real-time and dynamic intermediary platform among performer, director and audience. To meet various demands in practice, a vision-based formation generation was proposed that the path construction was studied based on linear fitting, …
Review On Interoperability Of Command Information System And Combat Simulation System,
2020
Warfare Simulation Center, Academy of Armored Force Engineering, Beijing 100072, China;
Review On Interoperability Of Command Information System And Combat Simulation System, Zaijiang Tang, Xiangzhong Xu, Xue Qing, Haohua Xu
Journal of System Simulation
Abstract: The interoperability of command information system and combat simulation system is an important and difficult problem of building practical training environment. The four aspects of interoperability connotation were summarized. The demands of interoperability were analyzed. The status and development of interoperability, especially for C4ISR/Sim Technical Reference Model (TRM), Battle Management Language (MBL), Levels of Conceptual Interoperability Model (LCIM) were studied. The existing problems were summarized, and four kinds of solutions were proposed. The general technical framework of interoperability based on service oriented architecture was designed, and the interoperability solving method based on Ontology was given.
Total Least-Squares Algorithm For Wiener Errors-In-Variables System Modeling,
2020
Key Laboratory of Advanced Process Control for Light Industry (Ministry of Education), Jiangnan University, Wuxi 214122, China;
Total Least-Squares Algorithm For Wiener Errors-In-Variables System Modeling, Ziyun Wang, Zhicheng Ji
Journal of System Simulation
Abstract: The modeling problem of Wiener errors-in-variables systems was investigated where measurements of the system input and output were corrupted by the additive white Gauss noise. After the provided reformulation of the errors-in-variables system, a two-stage algorithm was developed to estimate the unknown parameters with the first stage employing the total least-squares algorithm, followed by a singular value decomposition in the second stage. The asymptotic maximum likelihood estimation property under the PE condition was strictly proven that with data length tends to infinite, and the proposed total least-squares solution provided an asymptotic maximum likelihood estimate for the nonlinear system parameter …
Molecular Dynamics Of Fluid Properties By Normal Oscillations Of Solid Wall,
2020
School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China;
Molecular Dynamics Of Fluid Properties By Normal Oscillations Of Solid Wall, Haijun Dong, Xiaoqing Lu, Haopeng Zhang, Mingming Shan
Journal of System Simulation
Abstract: The fluid properties under the condition of the solid wall normal oscillations were studied using the molecular dynamics method. The two dimensional Couette flow model made up of copper wall and argon fluid was built. The fluid state of the near wall was simulated under the different oscillation parameters of solid wall and the corresponding fluid velocity field, the density distribution, the potential energy curves and the friction force were obtained. Then the influence mechanism of the wall oscillations on the frictional drag at liquid-solid interface was investigated. The results indicate that the frictional drag between wall and fluid …
Novel Method To Identify Pmsm Parameters Based On Multiple Linear Regressive Models,
2020
1. School of Internet of Things, Jiangnan University, Wuxi, 214122; ;2. Wuxi Electrical and Higher Vocational Schools Wuxi 214122;
Novel Method To Identify Pmsm Parameters Based On Multiple Linear Regressive Models, Zhenwei Shi, Zhicheng Ji
Journal of System Simulation
Abstract: A New Coupled Recursive Least Squares (C-FF-RLS) Algorithm with a forgetting factor was proposed for the Parameters Identification of Permanent Magnet Synchronous Motors (PMSMs). The deduced multiple linear regressive models of PMSM were proposed that were simple and appropriate for parameter identification. The C-FF-RLS identification algorithm had a high computational efficiency and a fast convergence speed because which Avoided the Matrix Inversion Operation in the Gain Matrix Compared with the Traditional Multivariable Recursive Least Squares (M-FF-RLS) Algorithm with a Forgetting Factor. The Proposed Identification Algorithm was applied on a simulation system of PMSM. The identification results achieved by …
Guidance Simulation Credibility Evaluation Based On Clustering With Grey Cloud And Entropy Weight,
2020
1. School of Information Engineering, He'nan University of Science and Technology, Luoyang 471003, China; ;
Guidance Simulation Credibility Evaluation Based On Clustering With Grey Cloud And Entropy Weight, Wang Fei, Xiaogeng Liang, Guo Chao, Peipei Li
Journal of System Simulation
Abstract: Considering the problems of randomness and fuzziness in evaluating indexes from guidance simulation system, a novel grey clustering comprehensive evaluation model combined with center normal grey cloud whitening function and combination weighting function was presented. The comprehensive credibility evaluation index system for guidance simulation was built. The subjective weight vector of indexes was established by weighting cloud model based on analytic hierarchy process, the objective weight vector of indexes was obtained by entropy weighting method based on the entropy and classified distinction of the normal grey cloud whitening function, then the comprehensive weight vector was acquired by fusing the …
Modeling And Analysis Of Command Control System Based On Devs,
2020
Beijing Inst.of Electronic System Engineering, Beijing 100854, China;
Modeling And Analysis Of Command Control System Based On Devs, Xinlong Li, Xiang Mao
Journal of System Simulation
Abstract: A comprehensive discussion was made on the application of DEVS theory in the modeling of command control (C2) system, which introduced the mathematical model of DEVS, gave the principle of using DEVS to model the C2's behavior and analyze how capability-requirement-measurements effected the simulation. The process and approach of DEVS-Modeling battalion's C2 system were introduced.
Research On Live Migration Scheduling Method For Communication Network Simulation System Based On Vmotion,
2020
Xi'an Technological University, Xi'an 710021, China;
Research On Live Migration Scheduling Method For Communication Network Simulation System Based On Vmotion, Yanfang Fu, Gao Xiang, Cheng Bing, Xueyao Feng
Journal of System Simulation
Abstract: In order to make the quality of the simulation service not being affected by load dynamic changes, heuristic scheduling algorithm was proposed. Using the VMotion technology, the virtualization simulation platform was created by calling the SDK. Through the research of the simulation platform application overhead and virtual resource scheduling technology, the single communication network simulation model was modified, implementing the distributed network collaborative simulation which adapted to multiple virtual machines, providing new ideas for the mass communication network simulation system.
Design Of Navigation Electronic Interference System For Flight Simulator,
2020
1. 93199 Army Flight Simulator Techonology Research Institute, Harbin 150001, China;
Design Of Navigation Electronic Interference System For Flight Simulator, Zengbo Zhou, Chen Xi, Zhenyu Sun, Li Xiang
Journal of System Simulation
Abstract: Modern military combat pays more attention to the electronic interference and anti interference, as the important component, the aircraft navigation system is one of the main objects attacked by enemy electronic jamming. In order to simulate the electronic jamming influence on navigation performance of the system, the establishment of an electronic jamming system in aircraft engineering simulator, was designed for the flight simulator interference model and statistical model frame work, and according to the integrity of the system testing and calculation results, the interference was divided into five levels, which not only specified the electrical interference, but also …
Self Formation Development Mode With Vopes,
2020
Vision V & S Technology Co.,Ltd, Chengdu 610045, China;
Self Formation Development Mode With Vopes, Changming Fu, Chunsheng Long, Tang Hong
Journal of System Simulation
Abstract: To solve the growing conflict between requirements and applications in simulation/visualization, self-formation development mode was proposed: domain experts DIY by WYSWYG in a self-adapting process. VOPES (Visual Open platform for Engineering System) was briefly introduced: integrated architecture, system modeling tools, visualization tools, automatic generation, debugging, deploying, and runtime infrastructure. VOPES enables domain expert to produce distributed simulation/visualization application, no need of coding, complex program skill, hard rules like UML, HLA, DDS, etc. VOPES can be widely used in applications like mission simulation, equipment demonstration, virtual range, training, ITEM. It is especially suitable to the fast, agile, complex simulation/visualization application, …
