Design Of Simulation System About Laser Weapon Cooperative Engagement,
2020
1. School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China;;
Design Of Simulation System About Laser Weapon Cooperative Engagement, Wang Xin, Xu Lei, Zhiyong Su
Journal of System Simulation
Abstract: To satisfy the need of air defense combat in the future, the concept of cooperative combat of new laser weapons and traditional anti-aircraft weapons was proposed. The simulation system based on HLA aimed to improve the performance of the system of traditional anti-aircraft weapons. The whole system was mainly divided into three parts: simulation platform, equipment simulation and three-dimensional simulation. Firstly, the object class and interaction class were designed according to federal members and federal integration. Then the important part was the three-dimensional modeling and simulation work of every weapon system. Finally, the air defense simulation system was …
3d Real-Time Visualization And Simulation Platform For Collaborative Path Planning Of Ua,
2020
1. School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China;;
3d Real-Time Visualization And Simulation Platform For Collaborative Path Planning Of Ua, Chen Gong, Xu Lei, Zhiyong Su
Journal of System Simulation
Abstract: There are still some issues existing in current path planning of UAV, such as planning result simulation verification and 3D visualization. To solve the problems, a 3D real-time visualization and simulation platform for collaborative path planning of UAV was proposed. The target area was divided and calculated. The reconnaissance beam of UAV was modeled with virtual camera, the intersection points obtained quickly based on graphics hardware. The terrain mesh was calculated by scan-line polygon filling algorithm, reconnaissance information was recorded and analyzed, and the color temperature maps were given. Through the actual operation by the simulation platform, simulation …
Three-Dimensional Data Exploration Technology Based On Large-Scale Complex Geometrical Surfaces,
2020
High Performance Computing Center, Institute of Applied Physics and Computational Mathematics, Beijing 100094, China;
Three-Dimensional Data Exploration Technology Based On Large-Scale Complex Geometrical Surfaces, Zhiwei Ai, Cao Yi, Xiao Li, Huawei Wang
Journal of System Simulation
Abstract: Three-dimensional physical field data exploration visualization based on large scale complex geometric surface is of great value in three-dimensional electromagnetic simulation applications. Research was proposed which was suitable for massively parallel processing technology of three-dimensional data exploration. The concept of dual-data-source and data filtering policies was introduced based on contracts. Clipping algorithms based on spatial bounding box and data probing algorithm can support accurate three-dimensional data profiling for complex surface geometry. Research results have been applied to significant practical applications, such as the fuselage characteristics of electric field distribution analysis and high value targets within the seeker's accurate …
Research On Space Environment Simulation Technology Based On Mobile Platform,
2020
Institute of Surveying and Mapping, Information Engineering University, Zhengzhou 450001, China;
Research On Space Environment Simulation Technology Based On Mobile Platform, Xiaofei Hu, Zhou Yang, Pengfei Li, Jiwei Xu, Xianguang Xue
Journal of System Simulation
Abstract: Based on the study of the spatial visualized simulation, a novel visualized simulation technology of spatial objects built on mobile platform was developed. Critical technologies include the organization, scheduling and mapping with the background of 3D starry sky, calculation and visualized simulation of spacecraft orbit, and storage, organization, dynamic scenario-based updated rendering of 3D digital earth mega geographic data. A fractionized tile algorithm covering the scope of screen was proposed. Projection ranged on the screen was taken as the criteria of fractionation of tiles in the algorithm. Testing results show that the fractionation is correct. Spatial simulation system …
Real-Time Rendering Of Large-Scale River In Inland River Ship Simulator,
2020
Marine Dynamic Simulation and Control Lab, Dalian Maritime University, Dalian 116026, China;
Real-Time Rendering Of Large-Scale River In Inland River Ship Simulator, Xiaoming Zhai, Yin Yong, Helong Shen
Journal of System Simulation
Abstract: To improve the reality of river visual in inland river ship simulator, a method of rendering large scale river which could be applied for inland river ship simulator was proposed. The river flowing field was built though the conception of stream function, and the algorithm of Poisson disk sampling was used to control the distribution of river flowing field. This could balance the relationship between efficiency and effect of river surface. The parallelism and programmability of GPU was adopt to render river surface. The results show the river flowing field generated by algorithm of stream function can reflect …
Simulation System For Testing Ship Dynamic Positioning Control Algorithm,
2020
Marine Dynamic Simulation and Control Lab., Dalian Maritime University, Dalian 116026, China;
Simulation System For Testing Ship Dynamic Positioning Control Algorithm, Xiaobin Qian, Yin Yong, Helong Shen, Xiaofeng Sun, Xiufeng Zhang
Journal of System Simulation
Abstract: To overcome the disadvantage of ship dynamic positioning control algorithm tests on sea trials, which features high risk, long debugging period and high expense, a simulation system for testing ship dynamic positioning control algorithm was designed. Motion mathematical model of dynamic positioning vessel and ocean disturbance model were established. The function requirements were proposed based on the characteristic of DP vessel movement. Architecture and implementation of the simulation system were introduced. Testing process and the related interface was descripted. A simulation was conducted on a DP supply vessel, which shows that: the simulation system can verify the effectiveness …
Circular Space-Filling Algorithm For Hierarchical Data Visualization,
2020
Beijing Key Laboratory of Big Data Technology for Food Safety, School of Computer and Information Engineering, Beijing Technology and Business University, Beijing 100048, China;
Circular Space-Filling Algorithm For Hierarchical Data Visualization, Kun Hou, Zhilong Li, Yuchao Feng, Chen Yi
Journal of System Simulation
Abstract: The existed Circle Packing methods mainly take the style of top-down to arrange all the nodes. When the nodes of different layer was arranged, the scaling and translation would cause relative high time complexity of the algorithm, and the size proportional discordance of nodes of different father nodes but the same layer, and it also causes the problems like defective tightness between the layouts of father nodes and child nodes. To solve problems above, on the basis of summarizing methods of arranging brother nodes of the same layer, the algorithm——CRCA(Circle and Rectangle Center Algorithm) was proposed, which took the …
Antenna Model In Simulation Of Spacecraft,
2020
Beijing Aerospace Control Center, Beijing 100094, China;
Antenna Model In Simulation Of Spacecraft, Ti Zhou, Miao Yi, Sun Jun
Journal of System Simulation
Abstract: To give a solution how to catch relay satellite by spacecraft in the simulation system of manned craft, several 2D craft models were studied in the simulation software based on HLA, and some sufficient and necessary conditions and the methods were given to compute the visibility of relay satellite according to these models. On these methods, 3D antenna model and the orbit and attitude model of spacecraft were researched, and 3D antenna model was given with attitude information of craft. Finally, matrix translations were used to translate some vectors to the same reference frame, and the visibility was decided …
Parallel Rendering Of Massive Aircraft Cad Models,
2020
1. The First Aeronautical Institute of PLA Air Force, Xinyang, 464000, China;;
Parallel Rendering Of Massive Aircraft Cad Models, Dunming Tan, Guoting Cao, Juanfang Lang, Yang Shuo
Journal of System Simulation
Abstract: A parallel rendering method was presented with PC clusters in order to render massive aircraft CAD models in real time with high resolution. PC clusters were used for sort-first based rendering, BVH tree was built for efficient frustum culling, DID screens were utilized for high resolution display. In addition, multi-CPUs were exploited for thread based parallel out-of-core paging, frustum culling, BVH tree building and rendering. The experimental results show that by this parallel rendering PC clusters consists of 15 PC nodes, aircraft CAD models with 1.7 million of triangles can be rendered in real-time with resolution of 6800* …
Lattice Boltzmann Fluid Simulation Based On Parameters,
2020
1. Institute of Water Resources for Pastoral Areas, Ministry of Water Resources, China Institute of Water Resources and Hydropower Research, Hohhot 010020, China;;
Lattice Boltzmann Fluid Simulation Based On Parameters, Zhongxiao Guo, Huiwen Liu, Xuemei Liu, Gao Yang
Journal of System Simulation
Abstract: In computational fluid dynamics (CFD), the lattice Boltzmann Method (LBM) has become the mainstream method of fluid numerical simulation based on Navier-Stokes equations. The visualization of numerical results and the real-time rendering of fluid animation could provide a visual method for data analysis. A velocity field drawn method for two-dimensional visualization was proposed based on LBGK equation and D2Q9 model design algorithm model, transforming floating-point fluid velocity value into the intensity values, which was used by the RGBA color rendering method. For three-dimensional visualization, Particle Level Set Method (PLSM) was used to track the fluid surface and coupled it …
Research On Online Simulation Technology Of Intelligent Distribution Network Based On Distributed Component Service,
2020
China Electric Power Research Institute, Haidian District, Beijing 100192, China;
Research On Online Simulation Technology Of Intelligent Distribution Network Based On Distributed Component Service, Xueshun Ye, Wanxing Sheng, Xiaoli Meng, Keyan Liu, Yinglong Diao
Journal of System Simulation
Abstract: Simulation architecture of intelligent distribution network was investigated based on component service, Service Oriented Architecture computing framework, modules coordination mechanism and component deployment and realization method were proposed. And data interactive interface, transmission and integration method with online data resources were proposed. Meanwhile, distribution network simulation model, including photovoltaic, wind power and other distributed generation was established, which designed online power flow, fault calculation, reliability, reactive power optimization, distributed generation locating and sizing function module. An online simulation system of intelligent distribution network was realized on basis of the architecture and method above. Through a 10 kV …
Virtual Simulation System Of Cutter Suction Dredger Based On Unity3d,
2020
1. College of IOT Engineering, Hohai University, Changzhou 213022, China;;
Virtual Simulation System Of Cutter Suction Dredger Based On Unity3d, Pengfei Yao, Zhengming Chen, Tong Jing, Lina Qian
Journal of System Simulation
Abstract: In order to solve some shortages for the traditional training of cutter suction dredger, a virtual simulation system was designed using Unity3D, which mainly targeted at operational procedures of construction and display of construction environment. Mesh deformation and texture changing were used to realize the simulation of the soil-cutting. The 2D path simulation which included the simulation of stone crushing and proportion of sand in the pipeline was realized by means of path-finding algorithm. 3D display and human-computer interaction were realized by virtual reality devices, which could improve the effect of the virtual simulation.
On Simulating Marine Radar Echo Intensity Generated By 3d Graphic Rendering,
2020
1. Laboratory of Marine Simulation & Control, Dalian Maritime University, Dalian 116026, China;;2. Navigation collage, Jimei University, Xiamen 361021, China;
On Simulating Marine Radar Echo Intensity Generated By 3d Graphic Rendering, Shilian Cao, Yicheng Jin, Yin Yong
Journal of System Simulation
Abstract: The echo image cannot show reliable occlusion between objects, and the echo intensity cannot represent physical characteristics of electromagnetic wave propagation in the existing marine radar simulator. To solve these problems, a new method of generating radar echo image was raised on the basis analyzing the method of ray tracing. 3D visual database was used as data source, the marine radar echo image was generated by the method scene graphic rendering. A model based on radar equation was raised to compute marine radar echo intensity. The model gave the method of computing path attenuation, rain attenuation and …
Research On Mathematical Model Of Yacht In Yacht Simulator,
2020
Key Lab. of Marine Simulation & Control, Dalian Maritime University, Dalian 116026, China;
Research On Mathematical Model Of Yacht In Yacht Simulator, Xiaofeng Sun, Yin Yong, Hongyu Zhou, Xiufeng Zhang
Journal of System Simulation
Abstract: Mathematical model of yacht is one of the key technologies for the development of yacht simulator. According to the separate model of MMG (Maneuvering Model Group), a planar motion model of yacht was established. The hydrodynamic coefficients were obtained through ship model test by using PMM (Planar Motion Device). Hydrodynamic forces and moments acting on the hull and propeller and rudder were calculated respectively. Ship motion equations were solved by means of the fourth order Runge-Kutta method, and ship motion parameters were achieved. Simulated program was coded through Visual Studio 2013, and simulations of three yachts were …
Modelling Of Boom Crane Loading System Of Marine Engineering Ship,
2020
Key Lab. of Marine Simulation and Control, Dalian Maritime University, Dalian 116026, China;
Modelling Of Boom Crane Loading System Of Marine Engineering Ship, Helong Shen, Yin Yong, Xiujie Wang
Journal of System Simulation
Abstract: Development of ocean resources has a high degree dependence on marine engineering equipment. Among them, marine engineering ship has been widely used in many areas. Cranes on ship play an important role on transferring cargoes. The boom crane which is the most common crane on marine engineering ship was chosen as researching object. According to its real motion law, the crane system’s motion model was built with Lagrange equation which was solved with Fourth-order Runge-Kutta. The dynamics characteristics of the crane in different forms of work were analyzed.
Igbt Radiator Design And Simulation,
2020
China Electric Power Research Institute, Beijing 100192, China;
Igbt Radiator Design And Simulation, Weijie Dong, Xiaoli Meng, Xiaohui Song, Li Wei
Journal of System Simulation
Abstract: The power component IGBT is the main heat source in the current-transformer equipment, the heat affects safe operation seriously, so the radiator design is very important. Taking a certain kind of IGBT as an example, the operating power consumption was analyzed and calculated, the design method of the radiator was studied, and the modeling of radiator with software of SolidWorks was designed, which was exported into the finite element analysis software of Ansys, making the thermal simulation combining the reality of IGBT operating environment, and comparing the cooling effect of different radiator configuration. A theory method was provided …
Data Visualization And Interactive System Facing Educational Practice,
2020
State Key Laboratory of Virtual Reality Technology, Beihang University, Beijing 100191, China;
Data Visualization And Interactive System Facing Educational Practice, Jinpei Qiang, Dai Song
Journal of System Simulation
Abstract: The data-driven visualization interactive system was implemented. According to the data visualization models, five modules were designed, which were the input module, visualization template module, visual editing module and output module. It was implemented by calling the D3, jQuery and other JavaScript library and binding the events with browser DOM. The visualization system was applied to educational practice in different disciplines which realized the evaluation of data visualization technology. Practice shows that the platform can not only meet education demand of cross-disciplinary but also simulate students’ interest in learning through visualization and interactive technology.
Research On Dynamic Construction Of Assembly Relation Of Transmission Device,
2020
Beijing Institute of Technology, Beijing 100081, China;
Research On Dynamic Construction Of Assembly Relation Of Transmission Device, Qinghua Zhang, Qingdong Yan, Shouwen Yao, Jilin Liu, Wang Yu
Journal of System Simulation
Abstract: Currently, virtual assembly research only focuses on the assembly relations of parts which are defined in cad software, and it is unable to dynamically construct or change parts’ assembly relations. Most of the research objects are simple geometry assembly, no complex structural assembly. To solve the problems efficiently, a dynamic assembly relation modeling method was proposed based on assembly feature. In the first part, the concepts of assembly feature and assembly feature plane were introduced. The assembly characteristic parameters and geometric elements were extracted from the typical assembly feature types which were defined based on the parts of the …
Joint Dynamics Simulation Analysis And Optimization In Carrying Manipulator Of Sound-Absorbing Board Packing Device,
2020
School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China;
Joint Dynamics Simulation Analysis And Optimization In Carrying Manipulator Of Sound-Absorbing Board Packing Device, Yanjun Xiao, Feng Hua, Wang Zhao, Yonggeng Wang
Journal of System Simulation
Abstract: As an important part of the sound-absorbing board packing device, the efficiency and operational stability of carrying manipulator play a decisive role on packing. When the natural frequency of carrying manipulator is close to the excitation frequency of motor, the carrying manipulator will shake violently. In response to above problems, we put joint dynamic simulation analysis of ADAMS and ANSYS Workbench on the carrying manipulator which is in use. We got the important components’ stress situation with the acceleration time of 0.1 s and the low-order natural frequency of the traverse key displacement in return. And on this basis …
Cooperative Task Assignment Simulation Of Multi-Uavs In Dynamic Environments,
2020
UAV Systems Engineering Institute, China Aerospace Electronics Technology Research Institute, Beijing 100094, China;
Cooperative Task Assignment Simulation Of Multi-Uavs In Dynamic Environments, Tizhou Qiao, Xinping Guo, Yawei Li, Wenjun Zhang, Zhongyi Yin
Journal of System Simulation
Abstract: In order to address the problem of cooperative task assignment for multiple UAVs, a parallel simulation framework was proposed for cooperative task planning based on HLA/RTI simulation through UAV aerodynamic simulations and flight control simulation, which could be more real and effective algorithm validation. The paths were optimized to account for randomization and threats in the environment by modeling the probability of UAV loss. By coupling the failure probabilities of each UAV to the missions of the other UAVs, reality of cooperation was improved significantly. In order to achieve the desired objectives, the stochastic simulation models were used to …
