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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 …


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 …


Real-Time Video Webgis With Virtual-Reality Fusion, Yihao Yu, Tan Chong, Zhou Zhong, Wu Wei 2019 State Key Laboratory of Virtual Reality Technology and Systems, Beihang University, Beijing 100191, China;

Real-Time Video Webgis With Virtual-Reality Fusion, Yihao Yu, Tan Chong, Zhou Zhong, Wu Wei

Journal of System Simulation

Abstract: At present, smart cities have already become an important trend of urban governance in the information era. As an effective display method to the smart cities, augmented virtual environment technology has long been a common concern of researchers. However most of current augmented virtual environment technologies have the disadvantages of high hardware requirements, poor cross-platform capability, so it is difficult to promote to the common users. To solve this problem, in this paper, we put forward a fusion method based on WebGL, which combines the real-time monitor video stream with the 3D geographic scene, resulting in an augmented …


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, …


Operational Evaluation Of Traffic Guidance Systems Based On Multi-Agent-Based Simulation, Keshuang Tang, Hengjia Zhang, Yixie Bowen 2019 Key Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji University, Shanghai 201804, China;

Operational Evaluation Of Traffic Guidance Systems Based On Multi-Agent-Based Simulation, Keshuang Tang, Hengjia Zhang, Yixie Bowen

Journal of System Simulation

Abstract: To study the optimization effect of variable message sign-based traffic guidance system on the utilization efficiency of transportation resource, the multi-agent-based model is used to develop simulation and evaluation platform. The simulation experiments of three typical traffic guidance strategies are carried out. The effect of guidance is evaluated by the indexes as average driving time, average searching time for parking lot and parking failure rate. The result shows that the driving and parking guidance can help reduce the average driving time and the parking failure rate respectively. The influence of the traffic guidance system on the traffic operation status …


Master-Slave Control Method Of Dexterous Hands Based On Data Glove, Kangjun Pan 2019 Zhejiang Industry & Trade Vocational College, Wenzhou 325003, China;

Master-Slave Control Method Of Dexterous Hands Based On Data Glove, Kangjun Pan

Journal of System Simulation

Abstract: With the limitations of artificial intelligence, automatic control, and sensor, the dexterous hand in unstructured environments is still very difficult to achieve fully autonomous operation. A master-slave control method of dexterous hands with the combination of data glove and stepper motors is proposed. By the CybergloveII device, human finger joints’ motion data is gathered in real time, then, the motion data are matched to the dexterous hand’ joints respectively. A communication protocol is designed to transfer the motion data between the PC and the ICB. Lastly, the motion data are transferred to the ICB through a serial interface and …


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 …


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 …


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. …


Volume Rendering For Ct Images Based On 3d Gradient Amplitude, Luo Ming, Shuifa Sun, Liwen Wang, Fangmin Dong 2019 1. The china Three Gorges University computer and information institute, Yichang 443002, China;;2. Intelligent visual monitoring key laboratory of hydropower project, Hubei Yichang 443002, China;

Volume Rendering For Ct Images Based On 3d Gradient Amplitude, Luo Ming, Shuifa Sun, Liwen Wang, Fangmin Dong

Journal of System Simulation

Abstract: In order to maintain the partial shape characteristics of the three-dimensional space of interest in the process of CT images volume rendering, a transfer function method based on the three dimensional gradient amplitude is proposed. Edge detection and denoising segmentation are employed to obtain the complete edge structure of the interested area. The distance between the image sequences pixels and the edge in the body data is calculated, so that the framework can be formed with the distance data brought into the Kindlmann transfer function. Therefore, a new transfer function is achieved. The comparison experiment with semi-automatic transfer function …


Research On Inner And Outer Loop Control Of Active Suspension With Linear Motor, Farong Kou, Fang Tao, Ren Quan, Chen Long 2019 College of Mechanical Engineering, Xi’an University of Science and Technology, Xi'an 710054, China;

Research On Inner And Outer Loop Control Of Active Suspension With Linear Motor, Farong Kou, Fang Tao, Ren Quan, Chen Long

Journal of System Simulation

Abstract: In order to improve the dynamic performance of active suspension with linear motor, the control strategy of LQR control and quasi proportional resonance control was designed. A two-degree-of-freedom vehicle model with active suspension and a linear motor mathematical model were established, and the correctness of the linear motor model was verified by experiments. The influence of the inner loop controller parameters on the controller performance and the response characteristics of the linear motor were analyzed by Matlab/simulink, and the parameters of the inner and outer loop controller were determined. The PID control and quasi proportional resonant control were …


Virtual Vascular Stent Implantation Model Based On Fbs, Chenxi Huang, Yongtao Hao, Haowei Xing, Chen Fei 2019 1. College of Electronics and Information Engineering, Tongji University, Shanghai 201804, China;;

Virtual Vascular Stent Implantation Model Based On Fbs, Chenxi Huang, Yongtao Hao, Haowei Xing, Chen Fei

Journal of System Simulation

Abstract: Vascular stent intervention can expand the narrow coronary artery. Doctors analyze the patient's two-dimensional vascular images based on experience and select the stent. In this paper, vascular stent implantation is modeled and analyzed by Function-Behavior-Structure. The stent model is established by virtual reality modeling language and the stent implantation process is simulated. By combining FBS product design method with the virtual reality interaction technology, the virtual stent selection and implantation are adjusted until getting the best result. The prototype system can establish a personalized implantation model. The stent is selected accurately based on the specificity of patient's …


Research On Modeling And Simulation Of Ac/Dc Hybrid Power Distribution System, Ye Peng, Li Shan, Sun Feng, Han Yue, Zhang Tao, Jiajue Li 2019 1. Institute of Electric Power, Shenyang Institute of Engineering, Shenyang 110136, China;;

Research On Modeling And Simulation Of Ac/Dc Hybrid Power Distribution System, Ye Peng, Li Shan, Sun Feng, Han Yue, Zhang Tao, Jiajue Li

Journal of System Simulation

Abstract: As DC loads and power supply are more and more applications in the grid, AC/DC power distribution system is the future development trend of the low voltage power grid. The modeling and simulation of AC/DC hybrid power distribution system are studied in this paper. Considering the power control, DC bus voltage control and DC power supply and load access, the hierarchical control model of voltage source converter for AC / DC hybrid distribution system and the control strategy of each layer are proposed, and on this basis, the mathematical model of each module is established. Based on PSCAD electromagnetic …


Optimization Of Material Release For Printed Circuit Board Template Based On Data Mining, Shengping Lü, Qiangsheng Yue, Liu Tao 2019 1. School of Engineering, South China Agricultural University, Guangzhou 510642, China;;

Optimization Of Material Release For Printed Circuit Board Template Based On Data Mining, Shengping Lü, Qiangsheng Yue, Liu Tao

Journal of System Simulation

Abstract: Data mining were employed for the optimization of material release of PCB (Printed Circuit Board) template. PCB scrap ratio related parameters were specified and prediction model variables were chosen according to hypothesis test. Multiple linear regression (MLR), Chi-squared automatic interaction detector, artificial neural network and support vector machine approaches for the prediction of scrap ratio were employed. Evaluation indictors called as superfluous ratio, supplement release ratio and weighted sum of the two were presented; the material release simulation was conducted and then the four approaches were compared and MLR was taken as the preferred one. Adjust coefficient …


Airframe Damage Region Division Evaluation Method Based On Boundary Grid Gradient, Shuyu Cai, Lizhong Shi 2019 College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China;

Airframe Damage Region Division Evaluation Method Based On Boundary Grid Gradient, Shuyu Cai, Lizhong Shi

Journal of System Simulation

Abstract: In order to provide decision support for efficiently choosing and evaluating airframe damage region division methods, the characteristic of airframe damage region was analyzed, evaluating indicator of damage image division-boundary grid gradient was established. By introducing entropy method, combining with indicator of boundary grid gradient, the optimization of TOPSIS was presented, and the evaluation system of airframe damage region division was completely established. Airframe damage region division evaluation experiments were performed by different gray level entropy threshold of damage division image. Experimental results showed that, the proposed method efficiently represented division status of damage adjacency region, and avoided the …


Research On 3d Immersive Underground Laboratory Visualization System, Jiaxin Hou, Yadong Wu, Yangjie Xu, Xuejun Li, Wang Song, Dongzhou Du, Xiaorong Zhang 2019 1. College of Computer Science and Technology, Southwest University of Science and Technology, Mianyang 621010, China;;

Research On 3d Immersive Underground Laboratory Visualization System, Jiaxin Hou, Yadong Wu, Yangjie Xu, Xuejun Li, Wang Song, Dongzhou Du, Xiaorong Zhang

Journal of System Simulation

Abstract: Deep geological disposal of high-level radioactive waste is the only internationally recognized and feasible method. The construction of underground laboratories is a complex engineering. To improve the intuitiveness and accuracy of comprehensive data analysis, an immersive underground laboratory 3D data visualization system is constructed. The system includes surface scenes, scene models with laboratory lanes and bedrooms, and designs scene roaming and visual interactive interaction of 3D data. The practical application shows that this system can not only facilitate the rapid construction and evaluation of underground laboratory design schemes, but also provide scientific basis for rapid decision-making of engineering construction …


Deep Learning Method For Hyperspectral Remote Sensing Images With Small Samples, Xiangbin Shi, Zhong Jian, Cuiwei Liu, Liu Fang, Deyuan Zhang 2019 1. School of Computer, Shenyang Aerospace University, Shenyang 110136, China;;2. College of Information Science and Technology, Liaoning University, Shenyang 110036, China;

Deep Learning Method For Hyperspectral Remote Sensing Images With Small Samples, Xiangbin Shi, Zhong Jian, Cuiwei Liu, Liu Fang, Deyuan Zhang

Journal of System Simulation

Abstract: In order to solve the problem of large information dimension and fewer labeled training samples of hyperspectral remote sensing images, this paper proposes a hyperspectral remote sensing image classification framework HSI-CNN, which reduces the number of model parameters while maintaining the depth of neural network. Image pattern invariance and spectral channel contribution rate are analyzed, and the spectral redundancy information is reduced by principal component analysis. A full convolution neural network structure suitable for small sample hyperspectral remote sensing images is designed and the amount of network parameters is effectively reduced. Three kinds of HSI-CNN structures are proposed …


Design And Realization Of Behavior Tree In Weapon Equipment Virtual Maintenance Training System, Wensheng Xu, Wu Bo, Jianhong Jiang 2019 Shanghai Precision Metrology & Test Research Institute, Shanghai 201109, China;

Design And Realization Of Behavior Tree In Weapon Equipment Virtual Maintenance Training System, Wensheng Xu, Wu Bo, Jianhong Jiang

Journal of System Simulation

Abstract: To solve the problem of long development period of virtual maintenance training system for complicated weapon equipment, the 3D modeling, the behavior modeling and the decision modeling of virtual maintenance were studied. The behavior trees design model was applied to analyze, design and develop the system which was tested in the maintenance case of marching tensioning device of a certain weapon equipment. The scripting unit and the running efficiency of the behavior trees model in the case were tested. The test results showed that this design method with behavior tree model has better scalability and model description clarity, and …


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 …


Saliency Feature Extraction Method Based On Multi-Scale Region Covariance, Shimin Wang, Jihua Ye, Mingwen Wang, Jiali Zuo, Changhong Liu 2019 School of Computer Information and Engineering, Jiangxi Normal University, Nanchang 330022, China;

Saliency Feature Extraction Method Based On Multi-Scale Region Covariance, Shimin Wang, Jihua Ye, Mingwen Wang, Jiali Zuo, Changhong Liu

Journal of System Simulation

Abstract: In order to solve the problem that the saliency detection target boundary is vague, the paper proposes a saliency feature extraction method based on multi-scale region covariance. This method firstly extracts the multi-scale features of an image, then combines region covariance to extract the image bottom features, calculates the image’s multi-scale uncertainty weights, and the weights are optimized for the final saliency features, which are obtained by fusion. In the paper, our proposed model compares the experimental results with the commonly used feature extraction algorithms. The experimental results show that the proposed algorithm is closer to the actual …


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