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Feature Model Visualized Configuration Method Of Digital Museum, Caixia Li, Song Yuan, Zhaoyang Feng, Wang Yi, Li Zhi 2020 1. Satellite Marine Tracking and Control Departement of China, Jiangyin 214431, China;;

Feature Model Visualized Configuration Method Of Digital Museum, Caixia Li, Song Yuan, Zhaoyang Feng, Wang Yi, Li Zhi

Journal of System Simulation

Abstract: It is an issue to be solved urgently transforming Digital Museum simulation resource description from natural language into visual simulation in order to reuse and share the resource expeditiously. During the analysis for feature model technique and Internet of Data (IOD), a method for feature model visualized configuration of digital museum based on IOD is proposed. The approach achieves the visualized configuration for simulation resource from domain feature model to application feature model which includes definition of feature model, description with feature data semantic tag and association semantic tag, visualized configuration with feature editor, feature association editor and …


Design And Application Of Underwater Unmanned Vehicle Simulation System For Navigation And Obstacle Avoidance, Zheng Wei, Qiming Zou, Wenxi Ni 2020 The 705th Research Institute, China Shipbuilding Industry Corporation, CSIC, Xi′an 710075, China;

Design And Application Of Underwater Unmanned Vehicle Simulation System For Navigation And Obstacle Avoidance, Zheng Wei, Qiming Zou, Wenxi Ni

Journal of System Simulation

Abstract: Accurate navigation and location, effective detection and realtime obstacle avoidance are the bases of Underwater Unmanned Vehicle (UUV) for long voyage mission accomplishment. To achieve intellectual demonstration and validation functions of UUV, which was studied on the base of integrated navigation model and dynamic obstacle-avoidance strategy on detection, the systems analysis aimed to simulated object characteristics was accomplished. Besides, models-component encapsulation method together with concurrent multi-thread simulation skeleton on discrete events was derived, followed by designed UUV navigation and obstacle-avoidance simulation system, compartmentalized function modules and marked-out simulation flow. The simulation application of UUV was achieved to …


Identification Of Wiener Model Based On Improved Differential Evolution (Sade) Algorithm, Xiaoping Xu, Bai Bo, Fucai Qian 2020 1. School of sciences, Xi'an University of Technology, Xi'an 710054;;

Identification Of Wiener Model Based On Improved Differential Evolution (Sade) Algorithm, Xiaoping Xu, Bai Bo, Fucai Qian

Journal of System Simulation

Abstract: To identify the parameters of nonlinear Wiener model, a new identification method was put forward based on a SADE algorithm. Its basic idea is as follows: the Sigmoid function and adaptive mutation operator were adopted to improve the mutation operation part of the basic differential evolution algorithm, accordingly, the disadvantages of the basic differential evolution algorithm, such as premature convergence, instability, etc, were effectively overcome. The proposed algorithm was used to parameter identification problem of Wiener model; moreover, the accuracy of identification was well improved. In the numerical simulation, compared with other relevant existing algorithms, simulation results show that …


Image Denoising Algorithm Based On Method Noise Sparse Representation Dictionary Learning, Lishao Huang, Haiying Wen, Sisi Gu 2020 College of Electronics and Information Engineering, Hunan University of Science and Engineering, Yongzhou 425199, China;

Image Denoising Algorithm Based On Method Noise Sparse Representation Dictionary Learning, Lishao Huang, Haiying Wen, Sisi Gu

Journal of System Simulation

Abstract: For the shortcoming of losting partial texture information with image denoising process, the image denoising algorithm based on method noise sparse representation was proposed. The method noise, which was defined as the difference between the noisy and the denoised image, was obtained by guided filter. Then redundant dictionary was learned by improved dictionary learning method and the method noise. The image texture information in method noise was extracted by the learning dictionary, and image was restored by the extracted image texture information and denoised image by guided filter. The experimental results demonstrate that the peak signal to noise ratio …


Color Face Image Recognition Based On Lbpt Method, Jihua Ye, Yahui Chen, Shimin Wang 2020 College of Computer Information Engineering ,Jiangxi Normal University, Nanchang 330022, China;

Color Face Image Recognition Based On Lbpt Method, Jihua Ye, Yahui Chen, Shimin Wang

Journal of System Simulation

Abstract: Aiming to the shortcomings of exiting algorithm to obtain better color face image information for color facial image recognition, the LBPT algorithm was proposed to realize the high efficiency recognition of color face image. LBPT algorithm reflected the texture features of gray image through adaptively obtaining neighborhood radius, ascertaining the relationship between neighborhood radius and neighborhood pixel number, setting threshold. The RGB color model was used to separate the color face image into the R,G,B three component diagrams. The LBPT algorithm was used to obtain the feature of the component diagrams. In order to realize further recognition, the method …


Image Segmentation Based On Active Contour Derived By Signed Pressure Force Function, Hongli Lü, Renfang Wang 2020 1. College of Mathematics and information Science, Wenzhou University, Zhejiang 325035, China;;

Image Segmentation Based On Active Contour Derived By Signed Pressure Force Function, Hongli Lü, Renfang Wang

Journal of System Simulation

Abstract: Distance regularized level set evolution model for image segmentation has some shortcomings. Initial curve is not flexible and the direction of curve evolution is not self-adaptive. A new active contour model was proposed. A signed pressure force function (SPF) was constructed, integrating local information and global information, and shown to modulate the signs of pressure forces inside and outside the region of object; Then SPF was embed to DRLSE model to solve the problem of requiring the initial contour to surround (let in or keep out) the objects. Experimental results show that the new model's initial contour can be …


Opnet Simulation Method For Underwater Acoustic Networks Based On Chirp Spread Spectrum, Wencong Li, Yuan Fei, Zhangting Zhong, En Cheng 2020 1. College of Information Science and Technology, Communication Engineering, Xiamen University, Xiamen 361005, China;;2. Key Laboratory of Underwater Acoustic Communication and Marine Information Technology, Ministry of Education, School of Information Science and Technology, Xiamen University, Xiamen 361005, China;

Opnet Simulation Method For Underwater Acoustic Networks Based On Chirp Spread Spectrum, Wencong Li, Yuan Fei, Zhangting Zhong, En Cheng

Journal of System Simulation

Abstract: Underwater acoustic(UWA) network protocol simulation on OPNET software could not follow the changing of channel structure and did not support custom modulation. In view of the limitations mentioned, a more realistic method of UWA protocol simulation on OPNET was introduced. UWA network ALHOA protocol simulation was token as an example. The physical layer modulation customized was called π/4-DM-DQPSK which was based on Chirp Spread Spectrum. In Matlab, the system would generate a modulation curve which would then be imported into OPNET to adjust the configuration of other pipelines. The simulation results of ALHOA protocol was verified in two Bellhop …


Simulation Study On Mslb Plus Sgtr And Si Failure Process In Reactor Vessel Based On Maap5, Xianrong Wu, Huiming Wei, Xuefeng Su, Wu Fan 2020 China Nuclear Power Simulation Technology Co. Ltd, Shenzhen 518118, China;

Simulation Study On Mslb Plus Sgtr And Si Failure Process In Reactor Vessel Based On Maap5, Xianrong Wu, Huiming Wei, Xuefeng Su, Wu Fan

Journal of System Simulation

Abstract: NPP Main Steam Line Break (MSLB) plus Steam Generator Tube Rupture (SGTR) and Safety Injection (SI) failure is severe accident (SA) process with complex phenomena in reactor vessel. The severe accident process serial was analyzed using the latest version of Modular Accident Analysis Program 5 (MAAP5). The whole trends of the simulation result agreed well with the anticipated process serial, which could provide training material to the full scope simulator and the related evidence to make detailed severe accident management guidelines (SAMG).


Numerical Simulation For Influence Of Baffle Length On Hydraulic Characteristics In Radial Sedimentation Tanks, Wenli Wei, Zewei Zhang, Yunfei Hong, Yuling Liu 2020 State Key Laboratory of Eco-Hydraulic Engineering in Shaanxi, Xi'an University of Technology, Xi'an 710048, China;

Numerical Simulation For Influence Of Baffle Length On Hydraulic Characteristics In Radial Sedimentation Tanks, Wenli Wei, Zewei Zhang, Yunfei Hong, Yuling Liu

Journal of System Simulation

Abstract: The VOF (volume of fluid) method was applied to track the free water surface, and the RNG turbulent model was used to close the two-phase flow time-averaged equations. The influence of inlet vertical baffle with different lengths on hydraulic characteristics in radial sedimentation tank was simulated and analyzed. The control equations were discretized using the finite volume method. Velocity and pressure were solved using the PISO (Pressure-Implicit with Splitting of Operators) algorithm. The research results show that: the long length feed flow baffle model has a smaller recirculation zone, better velocity field distribution than short length baffle, and the …


Research Of Visualization Of Road Guide Sign Panel Based On Combination Of Guiding Information, Zhongming Niu, Huang Min, Yuan Yuan, Li Min 2020 1. Guangdong Provincial Key Laboratory of Intelligent Transportation System, Guangzhou 510006, China;;2. School of Engineering, Sun Yat-sen University, Guangzhou 510006, China;;

Research Of Visualization Of Road Guide Sign Panel Based On Combination Of Guiding Information, Zhongming Niu, Huang Min, Yuan Yuan, Li Min

Journal of System Simulation

Abstract: In order to realize the intelligent management of road guide signs, a method of visualization of road guide sign panel based on the flexible combination of guiding information was proposed. As a consequence of analysis for structures of guide sign panel, the message on the guide sign panel was decomposed into guiding information, and then visualization function was proposed. The panel style was determined by the physical and logical topology of guiding intersection dynamically with the help of guide sign system database. Then the composition of geography information and guiding information was utilized in the process of visualization …


Fault Modeling And Simulation Of Swing Infrared Earth Sensor, Jiansong Chang, Xinyan Liu 2020 1. Beijing Institute of Control Engineering, Beijing 100190, China;;2. Science and Technology on Space Intelligent Control Laboratory, Beijing 100190, China;

Fault Modeling And Simulation Of Swing Infrared Earth Sensor, Jiansong Chang, Xinyan Liu

Journal of System Simulation

Abstract: In order to meet the requirements of refined modeling and fault simulation, function modules of swing infrared earth sensor (IRES) was identified according to its working principle, main fault modes of each module was analyzed, mathematical fault model based on physical mechanism was designed, and a program for normal and fault simulation was written. The refined fault model can calculate attitude angles exactly, reflect signal relationship between inside modules, and simulate various fault modes effectively. The model can be used in simulating, testing and fault diagnosis and so on.


Research On Effect Of Harmonic Source Equivalent Model On Harmonic Power Flow, Zhenguo Shao, Wenbo Su, Zhaoxiang Li 2020 Fuzhou University, Fuzhou 350116, China;

Research On Effect Of Harmonic Source Equivalent Model On Harmonic Power Flow, Zhenguo Shao, Wenbo Su, Zhaoxiang Li

Journal of System Simulation

Abstract: The models and parameters of harmonic source are the main factors that affect the calculation accuracy of harmonic flow. Harmonic source was divided into linear load and non-linear load and then modelled separately. The algorithm flowcharts, coupling method, decouple method and linear method, were analyzed with power source model, current source model and current source-impedance model correspondingly. The frequency response of those models was compared with a simple example. It indicates that the model of linear load and its affect in harmonic frequency are the key factors influencing computational accuracy of harmonic power flow. Then an example of harmonic …


Research On New Evaluation Method Based On Extreme Learning Machine, Jianling Cui, Tian Wen, Huanyao Dai, Zhou Bo, Huidong Qiao 2020 1. Luoyang Electronic Equipment Test Center of China, Luoyang 471003, China;;

Research On New Evaluation Method Based On Extreme Learning Machine, Jianling Cui, Tian Wen, Huanyao Dai, Zhou Bo, Huidong Qiao

Journal of System Simulation

Abstract: It's always the hot and difficult study point in electronic information equipment test areas of how to evaluate the combat effectiveness of electronic information equipment, the credibility of test environment, the fidelity of combat target simulation in timely and effectively. To solve these problems, the theory of extreme learning machine was analyzed, and the evaluation method based on extreme learning machine was proposed, and the using process of the evaluation method was demonstrated by taking evaluating the operational effectiveness of anti-aircraft gun-missile system as example. Therefore, the conclusion can provide a theoretical reference for the evaluation of combat effectiveness, …


Research Of 3d Cloud Illumination Model Based On Importance Sampling, Yonghua Xie, Fuxing Yuan, Wang Chang 2020 1. School of Computer and Software, Nanjing University of Information science and Technology, Nanjing 210044, China;;2. Jiangsu Engineering Center of Network Monitoring, Nanjing University of Information and Technology, Nanjing 210044, China;

Research Of 3d Cloud Illumination Model Based On Importance Sampling, Yonghua Xie, Fuxing Yuan, Wang Chang

Journal of System Simulation

Abstract: Currently existing 3D cloud simulation illumination models were confronted with the shortcomings such as complexity of implementation and low rendering efficiency. Herein a calculation method for illumination model based on importance sampling was proposed; Aiming at the problems of the old phase function, a new phase function was proposed to improve the rendering efficiency and quality. By the design of the importance function, the method did importance sampling in integrated interval and combined two phase functions to render the cloud. The results of the simulation show that the presented method has enhanced the rendering speed with the guarantee of …


Research On Sparse Grid Non-Uniformity Correction Technologies For Infrared Imaging Resistor Array, Huijie Du, Hongming Zhao, Yu Hong, Gao Yang, Zhang Yi 2020 Science and Technology on Space System Simulation Laboratory, Beijing Simulation Center, Beijing 100854, China;

Research On Sparse Grid Non-Uniformity Correction Technologies For Infrared Imaging Resistor Array, Huijie Du, Hongming Zhao, Yu Hong, Gao Yang, Zhang Yi

Journal of System Simulation

Abstract: The non-uniformity characteristic is the crucial factors affecting the image quality projected by infrared imaging resistor array, and which affects the fidelity of the infrared scene simulation. The non-uniformity characters of the infrared imaging simulation resistor array were analyzed based on measured data; the sparse grid and the flood non-uniformity correction technologies were investigated and analyzed and based on the existing measuring technology the improved sparse grid method for engineering was proposed. Through measuring the non-uniformity data, establishing the linear look-up table and correcting the non-uniformity image, the non-uniformity correction algorithm was developed and validated. The result shows …


Evaluation Of Anti-Multipath Performance To Satellite Navigation Signal Tracking On L1/E1/B1 Frequency Band, Mao Hu, Dewei Wu 2020 School of Information and Navigation, Air Force engineering University, Xi'an 710077, China;

Evaluation Of Anti-Multipath Performance To Satellite Navigation Signal Tracking On L1/E1/B1 Frequency Band, Mao Hu, Dewei Wu

Journal of System Simulation

Abstract: Aiming at analysis requirement to anti-multipath performance of satellite navigation signal system, on the basis of expounding modulation types of latest navigation signal system on L1/E1/B1(1575.42MHz) frequency band, the analytical expressions of code tracking multipath error envelope and carrier phase multipath error based non-coherent early minus late process discriminator and arctangent discriminator was deduced respectively, the effect of receiver correlation distance, receiver front-end bandwidth and navigation signal modulation types to multipath error were analyzed through simulation. The results show that B1-C open service signal of BDS should adopt MBOC(6,1,1/11) modulation of similarly Galileo E1OS combination mode, and B1 …


Optimization Simulation For Job-Shop Scheduling For Reducing Manufacturing Energy Consumption, Xiaoxia Li, Xiaomao Huang, Jianxiao Liu, Liu Feng 2020 1. College of Information, Huazhong Agricultural University, Wuhan 430070, China;;

Optimization Simulation For Job-Shop Scheduling For Reducing Manufacturing Energy Consumption, Xiaoxia Li, Xiaomao Huang, Jianxiao Liu, Liu Feng

Journal of System Simulation

Abstract: To reduce the energy consumption in the manufacturing process by optimizing job-shop scheduling, the process of the machines' energy consumption was divided into different stages. The energy consumption of each stage was analyzed and modeled. The job-shop scheduling problem model for manufacturing energy consumption was developed. On the basis of the developed problem model, minimizing manufacturing energy consumption was used as the optimization goal and a simulated annealing algorithm was adopted to optimize the job-shop scheduling. A job scheduling scheme was generated randomly according to the coding rule. The job scheduling scheme generated randomly was used as the initial …


Simulation Contrast Analysis On Rigid And Flexible Movements Of Multi-Fins Coordinated Propulsion Mode, Xie Ou, Boquan Li, Yan Qin 2020 1. School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China;;2. School of Mechanical Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;

Simulation Contrast Analysis On Rigid And Flexible Movements Of Multi-Fins Coordinated Propulsion Mode, Xie Ou, Boquan Li, Yan Qin

Journal of System Simulation

Abstract: A novel type of bionic underwater hybrid propulsion mode was proposed. By the means of the coordination control of the multi-fins, a propulsion mode combines the undulation propulsion of fish and the jet propulsion of jellyfish was developed, and was capable of achieving a serial of motions: undulating, jetting, turning, submerging, emerging and braking. The rigid and flexible water stabilizer kinematics model was established and the numerical simulation was performed for undulation and jet propulsion mode of the rigid and flexible water stabilizer by using a CFD method. The simulation results show that the dynamic characteristics and swimming performance …


Queuing System Simulation Optimization Of Subway Stair Width, Yangsheng Jiang, Juanxiu Zhu, Hu Lu, Shifan Han 2020 1. School ofTransportation and Logistics, Southwest Jiaotong University, Chengdu 610031, Sichuan, China;;2. Key Laboratory of Comprehensive Transportation of Sichuan Province, Chengdu 610031, Sichuan, China;;3. National United Engineering Laboratory of Integrated and Intelligent Transportation, Chengdu 610031, Sichuan, China;

Queuing System Simulation Optimization Of Subway Stair Width, Yangsheng Jiang, Juanxiu Zhu, Hu Lu, Shifan Han

Journal of System Simulation

Abstract: Subway stair and passenger flow are described as a G/G(n, φ)/C/C state-dependent queuing system with a general random arrival interval and the general random service time that depends on the passengers number n and stair gradient φ. Simulation model of the queuing system was designed and optimization algorithm was developed. Thus, a new optimization method based on queuing system simulation for subway stair width was proposed. The simulation optimization method, the M/G(n)/C/C, and the D/D/1/C queuing model (the existing design code) were compared. The results show that: the stair widths of …


Stochastic Resonance In Time-Delayed Asymmetric Monostable System With Stable Noise, Shangbin Jiao, Li Jia, Zhang Qing, Xie Guo 2020 School of Automation and Information Engineering, Xi'an University of Technology, Xi'an 710048, China;

Stochastic Resonance In Time-Delayed Asymmetric Monostable System With Stable Noise, Shangbin Jiao, Li Jia, Zhang Qing, Xie Guo

Journal of System Simulation

Abstract: α stable noise with monostable system was combined to investigate the stochastic resonance of the asymmetric monostable with time delay or not driven by different stable noise. The numerical simulation study shows that the stochastic resonance exists not only in the asymmetric monostable system but also in the time-delayed asymmetric monostable system. The effects of the stability index α (0<α≤2) and symmetric parameter β(-1≤β≤1) of α stable noise, the monostable system parameter α, the amplification factor D of multiplicative stable noise, the asymmetry parameter r and the time delay on the signal-to-noise ratio gain of the system were explored.


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