Node Selection Of Collaborative Tracking Based On Particle Filter,
2020
School of IoT Engineering, Jiangnan University, Wuxi 214000, China;
Node Selection Of Collaborative Tracking Based On Particle Filter, Chen Ying, Xuexue Cheng
Journal of System Simulation
Abstract: Due to the problem of target tracking in video sensor networks, a new algorithm was proposed for cooperative monitoring and tracking of node selection based on particle filter. The method obtained posterior distribution through particle filtering in tracking problem and got the information entropy to evaluate the estimate uncertainty. Background modeling and the phase division were applied to extract target blob, and pixels number of the target blob was calculated to measure detection information. Confidence measure of nodes was determined based on the two factors to realize the optimization of the selected node and then track by particle filter …
Research On Mathematical Models Of Damage Probability Approximate Computation Of Cargo Projectile,
2020
Department of Self-Propelled Gun, Nanjing Artillery Academy, Nanjing 211132, China;
Research On Mathematical Models Of Damage Probability Approximate Computation Of Cargo Projectile, Zhaosheng Wang
Journal of System Simulation
Abstract: The scatter size of the bomblet of cargo projectile is large by comparison with the casualty producing area of single target. In order to promote computational efficiency, and to study optimum spread area of cargo projectile and the most advantageous fire distribution conveniently, mathematical models of damage probability approximate computation of cargo projectile on small rectangular target and circular target with single-shot fire, and correlation fire that firing is on identical data were established by probability analysis. The simulation method was discussed. The optimal dispersion areas were put out according the approximate computation model of single-shot fire. …
Method Of Hardware-In-The-Loop (Hwil) Simulation For Pose Movement Of Vertical Launching Aerocraft With Continuous Rotation In Yaw,
2020
1. Unit 92941 of PLA, Huludao 125001, China;;
Method Of Hardware-In-The-Loop (Hwil) Simulation For Pose Movement Of Vertical Launching Aerocraft With Continuous Rotation In Yaw, Chengsheng Liu, Zhang Qing
Journal of System Simulation
Abstract: There are defects in the pose movement simulation of vertical launching aerocraft which can circumrotate continuously in yaw with three -axis flight motion simulator. Based on analysis of these defects, a four-axis project which could be applied to the situation of the changing range of vehicle pitch pose and vehicle roll attitude more than ±180° and the changing range of vehicle course pose towards infinite greatness was proposed. The structure of the four-axis flight motion simulator was analyzed and the control model was made. Above all, a four-axis concerted control law was designed with" switching movement mechanism", and a …
Research Of Intrusion Alert Aggregation Based On Spatial And Temporal Density,
2020
PLA Information Engineering University, Zhengzhou 450004, China;
Research Of Intrusion Alert Aggregation Based On Spatial And Temporal Density, Zhang Jing, Hengjun Wang, Junquan Li, Bin Yu
Journal of System Simulation
Abstract: Distributed Intrusion Detection System has created the problem to investigate a mass of duplicate alerts and high false positive rate in practical applications. Based on DBSCAN, density based spatial and temporal clustering of applications with noise (DBS&TCAN) algorithm was proposed by introducing temporal density. The approach aggregated partial alerts based on spatial density, and merges partial aggregation on the basis of temporal density. The effectiveness of the algorithm was demonstrated by the intrusion detection evaluation dataset. The comparative experiments and analysis show that the algorithm is effective in alert aggregation and gives better results in terms of real time …
Research On Ontology-Meta Modeling Method For Equipments Sos (System Of System) Combat Simulation,
2020
Simulation Center of The Academy of Armored Forces Engineering, Beijing 100072, China;
Research On Ontology-Meta Modeling Method For Equipments Sos (System Of System) Combat Simulation, Zhang Shen, Haohua Xu, Jingye Wang
Journal of System Simulation
Abstract: Aiming at the strict standard and difficulties of equipments SOS combat simulation modeling, an ontology-meta modeling method was put forward. Based on the analysis of equipments SOS combat, the basic notional units were abstracted: function unit, combat organize, combat maneuver, combat event, and combat environment, and the units mapping into UOPEE (unit, organization, proceeding, event and environment) which was a maturity and combined models collect, then constituted the descriptive UOPEE architecture with the UML method, obtaining the cyber-model architecture based on component designing and realizing method. This method makes the equipments SOS combat model easy to mapping and integration …
Fast Fusion Method For Multi-Focus Image Based On Hierarchical Model,
2020
School of Electrical Engineering, Anhui Polytechnic University, Wuhu 241000, China;
Fast Fusion Method For Multi-Focus Image Based On Hierarchical Model, Lisheng Wei, Pinggai Zhang
Journal of System Simulation
Abstract: The issue of hierarchical model for multi-focus image fusion was proposed to improve the visual effect and real-time performance. According to the ambiguous zones of source image, the appropriate grid value was selected and the fusion model was proposed. By using fuzzy logic method and threshold segmentation, the gray variance values of the corresponding block were calculated and the hierarchical classification of sub-block was given to achieve the best fusion zones. Based on these, the weighted mean method was proposed to smooth the discontinuity of different block marginal area. These guaranteed the real-time performance of image fusion. The simulation …
Control Strategy Of Bionic Eyes Movement In Gaze Shifts,
2020
1. School of Control Science and Engineering, Shandong University, Jinan 250061, China;;2. School of Applied technology, Qingdao University, Qingdao 266101, China;
Control Strategy Of Bionic Eyes Movement In Gaze Shifts, Xiaohui Wang, Ma Xin, Bin Qin, Yibin Li
Journal of System Simulation
Abstract: For the gaze shifts with asymmetrical depth in the horizontal plane of bionic eyes, a piecewise control strategy of eye-head coordinative motion was proposed according to the amplitude of gaze shifts, and the motion model of bionic eyes was developed. When the amplitude of gaze shifts is smaller than the head movement threshold, the eyes move only by saccade-vergence. When the amplitude is larger than the head movement threshold and smaller than the saturation threshold of eye movement with head at rest, gaze shifts are accomplished with eye-head coordinative movements. When the amplitude is larger than the saturation threshold, …
Research Of Remote Sensing Image Classification Technology Based On Multi-Feature Combining And Bow Model,
2020
1. The Information Engineering University, Zhengzhou 450052, China;;
Research Of Remote Sensing Image Classification Technology Based On Multi-Feature Combining And Bow Model, Li Ke, You Xiong, Du Lin
Journal of System Simulation
Abstract: A new algorithm of image classification of multi feature combination and BoW model was proposed. SIFT, GIST, Census and Gabor color, and many other types of features were extracted from the images, and then through the experimental analysis to determine the best feature combination. According to the general K-means algorithm which did not consider the weight of each features, different feature component was put forward by using automatic weighted k-means algorithm, respectively SIFT, GIST, Gabor feature construct weights based on image features of vocabulary, using the soft coding algorithm for image coding, and using the SVM algorithm …
Research On Visual Display System Of Helicopter Flight Simulator,
2020
Beijing Bluesky Aviation Technology Co. , Ltd, Beijing 100085, China;
Research On Visual Display System Of Helicopter Flight Simulator, Zhangfa Liu, Junjie Zhang
Journal of System Simulation
Abstract: In order to improve the effect of visual display system in helicopter simulator system, and to enhanc the installation and maintenance of equipment, the method is based on x-type side-cabin helicopter, studying from optical design, dome design, projection support and shelter design, geometry correction and edge blending design. Research was discussed from a theoretical analysis of optical design method, taking fully into account the practicality and versatility of the structure of the dome design, integrated projectors support and shade structures, as well as the unique geometric correction method of geometric reference system. This method was validated by actual project …
Design And Implementation Of Secure Usb Connection,
2020
Information Engineering University, Zhengzhou 450000, China;
Design And Implementation Of Secure Usb Connection, Songyin Zhao, Bin Yu
Journal of System Simulation
Abstract: Aiming at the deficiency of present secure solutions countering USB-based Hardware Trojan Horse, BadUSB, bus wiretapping and other new attack technologies, a secure connection scheme applying to any USB device was proposed. In scheme, mutual authentication and key exchange were implemented by extending the standard device request in the hub driver and USB device framework driver to prevent the creation of malicious USB connection. Meanwhile, all the data transferred of the created USB connection would be filter encrypted by USB bus driver and USB device framework driver to rebel the monitor of bus. The experiment results show that the …
Research And Implementation Of Simulation For Aircraft Crossing The Low-Level Wind Shear Area,
2020
1. Sino-European Institute of Aviation Engineering, Civil Aviation University of China, Tianjin 300300, China;;2. Tianjin Key Laboratory for Advanced Signal Processing, Civil Aviation University of China, Tianjin 300300, China;
Research And Implementation Of Simulation For Aircraft Crossing The Low-Level Wind Shear Area, Zhigang Su, Chen Qi, Jingtang Hao
Journal of System Simulation
Abstract: Low-level wind shear seriously affects the safety of approach and departure of flights, the flight simulation system is utilized for analyzing low-level wind shear influences on aircraft take-off and landing, which is of great significance for seeking the safety circumvention strategy of aircraft crossing the core of the storm. With software, Fluent, the system simulated the regional wind field of low-level wind shear, and utilized the open source flight simulator, FlightGear, as the aircraft simulation platform. The system sent the wind speed data as the input of system via UDP(User Datagram Protocol) interface and the influences on aircraft flight …
Numerical Simulation Of Cavitation And Failure Analysis In Hydraulic Loader,
2020
1. Departmentof Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China;;
Numerical Simulation Of Cavitation And Failure Analysis In Hydraulic Loader, Mo Li, Yang Qi, Yumei Wang
Journal of System Simulation
Abstract: Using software CFX with SST κ-ω model and Rayleigh-Plesset cavitation model, the numerical simulation of 3-D steady flow with water liquid and water vapour two phases in whole flow passage of hydraulic loader was conducted. The influences of different parameters (inlet flow rate, rotational speed and blade angle) on cavitation of hydraulic loader were studied. The results show that, under small flow rate, large blade angle (≥60°) and low speed (≤3 000 r/min), cavitation is light. At different working conditions, where cavitation appears in radial direction of position is the same. The cavitation mainly distributes where the r/R …
Research On Identification Of Induction Motor Parameters Ased On Nameplate Data And Pso,
2020
1. Department of Automation North China Electric Power University, Baoding 071003, China;;2. Baoding Simosimu Technology Co. , Ltd. , Baoding 071051, China;
Research On Identification Of Induction Motor Parameters Ased On Nameplate Data And Pso, Xingwu Wang, Bingshu Wang, Zhaoyan Zhang, Zhibin Liu
Journal of System Simulation
Abstract: A new method was proposed based on motor nameplate and particle swarm optimization (PSO) for identification of motor equivalent circuit parameters. The method effectively solved to present problems of motor equivalent circuit parameters identification method. An accurate motor equivalent circuit was built by introducing an equivalent stray-loss resistance, mechanical loss, and slip loss of ring brushes for wound motor. An identification optimization model of equivalent circuit was established based on motor nameplate parameters and motor equivalent circuit’s calculating parameters. Solving optimization model with PSO was achieved a higher probability optimization goals. The motor electrical parameters were calculatd at …
Development Trend Of Next Generation 3d Graphics Engines,
2020
Aviation Institute of Naval Academy, Shanghai 200436, China;
Development Trend Of Next Generation 3d Graphics Engines, Zhao Wei, Mao Ping, Fanyu Shen
Journal of System Simulation
Abstract: The development, relationship and differences between game engine and virtual reality engine were introduced, a joint name of 3D graphics engine was proposed. The bottlenecks and shortages of scene management, geometry model creating, physics simulation, lighting, shading, etc. were analyzed by synthetically considering the advancements in computer hardware, softwares and simulation theories, etc.. The development demands and trends were researched, the Concept of adaptive multi-thread shading technology, advanced real-time dynamic deformation technology, integrated collision detection technology, independent of the collision process technology were proposed for the first time, and a brief features description of these concepts were give, it …
Parametric Approachfor Automatic Generation Of Finite Element Modelfor Dental System,
2020
1. School of Mathematics and Computer, Wuyi University, Wuyishan 354300, China;;3. Fujian Provincial Key Lab of Cognitive Computing and Intelligent Information Processing, Wuyishan 354300, China;
Parametric Approachfor Automatic Generation Of Finite Element Modelfor Dental System, Wei Yi, Dengming Zhu
Journal of System Simulation
Abstract: Aiming at overcoming the disadvantages of currentmodeling methods for dental system, such as poor efficiency and lack of personality, a method for automatic generation of finite element model for personalized dental systemis proposed. On the basis ofthe original 3Ddental model, a3Dmodel of pericementum and phatnomaiscreatedby technology of solid modeling.According tothe configuration parameters of dentition and finite elements, a finite element model of the personalized dental system is generated. Based on Ansys parametric design language, anautomatic finite element modeling system of dental system is implemented. By this modeling system, experiments are performed based on the real data of dental system …
Parameter Identification Method Based On Lagrangemultiplier And Measuring Residual Error,
2020
1. China Southern Power Grid EHV Power Transmission Company Qujing Division, Qujing 655000, China;;
Parameter Identification Method Based On Lagrangemultiplier And Measuring Residual Error, He Zhi, Zhicheng Nie, Yining Qin, Youping Fan
Journal of System Simulation
Abstract: To satisfy the security and stability control, transient and steady state analysis of power system, it is necessary to ensure the accuracy of the estimated parameters. A method of parameter identification in power system based on Lagrange multiplier and measurement method of residualis proposed through analysis of measurement residuals. A two-step approach for parameter identification is introduced. Based on Lagrange multiplier method, using thestandardized Lagrange multiplier corresponding to the parameter error the parameters with errors can be judged by the size relative to the threshold and can bedetected and identified automatically. The residual vector of measurement redundancy is …
Doppler Ultrasound Blood Flow Signal Simulation Of Aneurysm Based On Analytical Velocity Distribution,
2020
1. Department of Electronic Engineering, Information School, Yunnan University, Kunming 650091, China;;
Doppler Ultrasound Blood Flow Signal Simulation Of Aneurysm Based On Analytical Velocity Distribution, Gao Lian, Yufeng Zhang, Jine Yan, Zhiyao Li, Kexin Zhang, Xiong Min, Suya Han
Journal of System Simulation
Abstract: For simulating the Doppler ultrasound blood flow signals in the vessels with aneurysms at different stages of development, this paper presents a simulation model in which the Doppler ultrasound blood flow signals are obtained by employing cosine-superposed constituents which are modulated by a power spectral density (PSD) estimated from velocity profile calculated by analytically solving the Navier-Stokes equations according to the axis-centerline velocity at the upstream faraway segment of the aneurysms. In the experiments, the Doppler ultrasound blood flow signals in the normal vessels and vessels with aneurysms having different dilations are generated, respectively. The simulated Doppler ultrasound blood …
Sub-Zero Cold Start Simulation Of Hybrid Fuel Cell Vehicle Drivetrain,
2020
Clean energy Automotive Engineering Center, Tongji University, Shanghai 201804, China;
Sub-Zero Cold Start Simulation Of Hybrid Fuel Cell Vehicle Drivetrain, Xinfeng Zhang, Minghui Luo, Chuanqi Yao, Dai Wei, Guofeng Chang
Journal of System Simulation
Abstract: Sub-zero cold start is a major obstacle for PEM fuel cell vehicle's commercialization. This paper aims to study the sub-zero cold starting process of hybrid fuel cell vehicle. A thermo-electro-mechanical coupling model was built based on the electro-chemical and thermal dynamic performance of battery and fuel cell, as well as the mechanical dynamic performance of fuel cell's auxiliary system. A computational model was also set up based on MATLAB/simulink. Through simulations under different heat powers, the energy consumption and battery state of charge are analyzed, which help to optimize power train's configuration and control strategy.
Chemical Reaction Optimization Algorithmfor Solving Quaycrane Scheduling Problems Of Container Terminal,
2020
1. SchoolofEconomics, Hebei University of Environmental Engineering, Qinhuangdao 066102, China;;2. College of Information Science & Engineering,Northeastern University, State Key Laboratory of Synthetical Automation for Process Industries, Shenyang 110819, China;;
Chemical Reaction Optimization Algorithmfor Solving Quaycrane Scheduling Problems Of Container Terminal, Wang Xu, Shixin Liu, Ruiyou Zhang, Wang Jia
Journal of System Simulation
Abstract: This paper researches on quay crane scheduling for unloading operations in container terminal. Considering quay crane work within its time window, an unloading scheduling simulation model is established.According to the characteristics of the unloading scheduling simulation model,a DoubleList Molecular Structure-based Chemical Reaction Optimization(DLMCRO) algorithm is developed. There are two parts in coding: one is the priority relation of the task, and the other is the task-to-quay-node mapping.Discrete Event Dynamic Simulation(DEDS)is used to simulate the decoding process. Four elementary chemical reaction operations against the problem are designed. The simulation experiment is …
Application Of Virtual Reality In Plc Gas-Fired Boiler Training System,
2020
School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454003, China;
Application Of Virtual Reality In Plc Gas-Fired Boiler Training System, Dahu Wang, Chen Xia, Huizheng Gao
Journal of System Simulation
Abstract: In view of the problem that traditional training methods for PLC debugging can not show the running states of controlled objects in full angles, a PLC virtual simulation training platform is designed based on virtual reality technology. The system is composed of upper computer and lower computer connected by RS232 bus. The upper computer uses 3ds Max to model and render facilities, and uses Unity3D to construct the complete virtual scene. The lower computer designs PLC control board to control the virtual gas-fired boiler, which transmits data between PLC and virtual scene through the communication module. The test result …
