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Simulation And Verification Of Feasibility For The Torsional Vibration System Test Scheme, Yin Meng, He Yun, Zhigang Xu, Shixuan Zhang 2019 1. Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China;;2. University of Chinese Academy of Sciences, Beijing 100049, China;;

Simulation And Verification Of Feasibility For The Torsional Vibration System Test Scheme, Yin Meng, He Yun, Zhigang Xu, Shixuan Zhang

Journal of System Simulation

Abstract: To test the loading accuracy of the directional device for the experiment system, a test scheme of torsional vibration system is proposed. To verify the feasibility for assessing the loading accuracy through the test scheme, a dynamics and control system model is established and simulated in the condition of ignoring torsion bar flexibility and friction; an Adams model is established and simulated in consideration of the torsion bar flexibility and friction. Both simulation results are obtained and analyzed. When the load torque amplitude reaches 30Nm, the disturbance torques under a certain frequency are all below 2Nm, which meets …


A Horizon Detection Method Based On Deep Learning And Random Forest, Jihua Ye, Shuxia Shi, Hanxi Li, Jiali Zuo, Shimin Wang 2019 School of Computer Information Engineering, Jiangxi Normal University, Nanchang 330022, China;

A Horizon Detection Method Based On Deep Learning And Random Forest, Jihua Ye, Shuxia Shi, Hanxi Li, Jiali Zuo, Shimin Wang

Journal of System Simulation

Abstract: The detection effect of existing horizon line detection methods is greatly affected by the environment, and the computational complexity is high. Aiming at the problem of horizon line detection in complex road scene in real-life, a horizon line detection method based on deep learning and random forest is proposed. The deep learning model is used to extract the depth features, then the obtained depth features are used for random forest training. The results of horizon line detection are obtained by random forest regression-voting. The simulation results show that this method has good detection effect. The detection results are not …


Three-Dimensional Imaging Modeling And Simulation Of Ships Based On Wide-Band Monopulse Radar, Guijie Diao, Xiaojian Xu, Ni Hong, Junjie Lu 2019 1. Beijing Electro-mechanical Engineering Institute, Beijing 100074, China;;

Three-Dimensional Imaging Modeling And Simulation Of Ships Based On Wide-Band Monopulse Radar, Guijie Diao, Xiaojian Xu, Ni Hong, Junjie Lu

Journal of System Simulation

Abstract: A three-dimensional imaging model for ship target on sea surface is developed based on wide-band monopulse radar system and synthetic aperture radar (SAR) system. The time-varying electromagnetic (EM) scattering of ships is calculated according to the SAR geometry and the monopulse antenna model. The signal received by every antenna element is obtained, and then, the time-domain signals in the sum, azimuth and elevation difference channels are established. Through analyzing the three-dimensional image results in different grazing angles, the model validity is demonstrated.


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 …


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 …


Artificial Fish Swarm And Feedback Linearization Of Flue Gas Denitration Control Based On Neural Network, Yuguang Niu, Pan Yan, Wenyuan Huang 2019 1. School of Control and Computer Engineering, North China Electric Power University, Beijing 102206, China;;2. State Key Laboratory for Alternate Electric Power System with Renewable Energy Source, Beijing 102206, China;

Artificial Fish Swarm And Feedback Linearization Of Flue Gas Denitration Control Based On Neural Network, Yuguang Niu, Pan Yan, Wenyuan Huang

Journal of System Simulation

Abstract: According to the present situation of SCR flue gas dentration control system in thermal power plant, an optimum proposal that control valve and concentration transmitter are added in the inlet of the SCR reactor is presented, and the corresponding control strategy is given. At the entrance of the SCR reactor, the receding horizon algorithm combined with the single neuron adaptive algorithm and the artificial fish swarm algorithm (RSNAAFS) is used to control branch valves to pretreat NOX in the exhaust flue gas. At the outlet of the SCR reactor, the neural network based on feedback linearization algorithm (NNFL) …


Development Of Interactive Simulation Of Dive And Underwater Operation Process Of Jiaolong, Xiaoxi Zhang, Yin Yong, Mincang Liang 2019 Key Laboratory of Marine Simulation & Control, Dalian Maritime University, Dalian 116026, China;

Development Of Interactive Simulation Of Dive And Underwater Operation Process Of Jiaolong, Xiaoxi Zhang, Yin Yong, Mincang Liang

Journal of System Simulation

Abstract: In order to solve the problems of difficult implementation and high safety risk in the practical training of deep submarine work at present, the simulation system of dive and underwater operation process of jiaolong is designed based on the virtual reality technology, which is not limited by time and place. The 3D modeling technology is used to construct the 3D model of the key structures such as the jiaolong and the mother ship. A mathematical model of A frame motion is established to simulate the motion process. Human-computer interaction and roaming are achieved by using 3D interactive technology, …


Hawkes Based Analysis Of Social Interaction Factors In Game Immersion Experience, Xiang Nan, Lingyun Zhu, Siwei Shang 2019 1. Liangjiang International College, Chongqing University of Technology, Chongqing 401135, China;;2. School of Computer Science and Engineering, Chongqing University of Technology, Chongqing 400054, China;

Hawkes Based Analysis Of Social Interaction Factors In Game Immersion Experience, Xiang Nan, Lingyun Zhu, Siwei Shang

Journal of System Simulation

Abstract: In order to improve the user's immersion experience in serious games, the influence of social factors in game process on game experience was studied. Game experience dimensions were divided and the social interactions during the game were categorized according to the dimensions. Hawkes process was adopted to simulate the game experience generation process affected by the social interactions. According to the maximum likelihood estimation and the users’ experience we captured, the weights of the social interactions were calculated. The game experience intensity was calculated by users’ facial expressions which were recognized by the trained HMM (Hidden Markov Model). Experimental …


Multi-Strategy Cooperative Evolutionary Pso Based On Cauchy Mutation Strategy, Yongji Wang, Tingting Su, Liu Lei 2019 National Key Laboratory of Science and Technology on Multispectral Information Processing, Automation College, Huazhong University of Science and Technology, Wuhan 430074, China;

Multi-Strategy Cooperative Evolutionary Pso Based On Cauchy Mutation Strategy, Yongji Wang, Tingting Su, Liu Lei

Journal of System Simulation

Abstract: For improving the performance of particle swarm optimization (PSO) in optimization simulation, a multi-strategy cooperative evolutionary PSO based on Cauchy mutation strategy is proposed. The new algorithm divides the whole swarm into three sub-swarms. A part of particles is selected to Cauchy mutation with a certain probability, and the rest of particles adjust their exploitation and exploration by different evolutionary strategies (large-scale search strategy, local search strategy, and adaptive velocity updating strategy). The sub-swarms share their information to achieve cooperation. Three strategies are used to optimize three test functions, and the result shows the advantages …


Dynamic Covering Algorithm Of Node Based On Virtual Force In Wireless Sensor Networks, Zhou Fei, Jianjun Gao, Xinyue Fan, Kangning An 2019 Chongqing Key Laboratory of Optical Communication and Networks, Chongqing University of Posts and Telecommunication, Chongqing, 400065, China;

Dynamic Covering Algorithm Of Node Based On Virtual Force In Wireless Sensor Networks, Zhou Fei, Jianjun Gao, Xinyue Fan, Kangning An

Journal of System Simulation

Abstract: Network coverage and node power consumption are two main performance indicators in wireless sensor networks (WSNs). Although many of the existing coverage methods have improved the two indicators, most of them have only improved for one performance, and the merits of another performance have not been discussed in detail. For this insufficient, an improved algorithm based on VFA is proposed. The WSN is divided into unit grids. The nodes select the grid forces and other forces adaptively. Under the combined forces, the nodes are re-deployed and the dynamic coverage of WSN is further optimized, so that the WSN achieves …


Internet Public Opinion Dissemination Model With Triple Opinion Group Under Media Intervention, Di Lan, Yudi Gu 2019 1. School of Digital Media; Jiangnan University, Wuxi 214122, China;;

Internet Public Opinion Dissemination Model With Triple Opinion Group Under Media Intervention, Di Lan, Yudi Gu

Journal of System Simulation

Abstract: By constructing a dissemination model with a discussion of the Internet public opinion, the paper studies the inner rule of the public opinion evolution of the triple opinion group under the influence of the media. In reference to disease transmission model SIR(Susceptible, Infected, Recovered) and the two opinions model SIaIbR(Susceptible, Infected-a, Infected-b, Recovered), this paper presents a public opinion evolution model of the triple opinion group SI3R(Susceptible, triple Infected, Recovered). The SI3R model introduces the concept of neutral groups, and occupies a large proportion in the spread of the population. Through the influence of neutral …


Modeling And Co-Simulation Of Novel Electric Heave Compensation System, Zhang Qing, Xia Hua, Yang Ning, Xianrong Qin, Yuantao Sun 2019 School of Mechanical Engineering, Tongji University, Shanghai 201804, China;

Modeling And Co-Simulation Of Novel Electric Heave Compensation System, Zhang Qing, Xia Hua, Yang Ning, Xianrong Qin, Yuantao Sun

Journal of System Simulation

Abstract: This paper presents a novel large electric heave compensation system with gear and rack driving mechanism, as comparison to those traditional hydraulic heave compensation systems which have complex structure and poor compensation accuracy. The mechanical-mathematical model of this compensation system is analyzed. According to the control requirement of the heave absolute displacement compensation, the relationship between the input angle of the motor and the excitation of the vessel’s displacement is obtained through the motion equation of the system. A virtual prototype is built with ADAMS, and the dynamic behaviors are simulated in accordance with its configuration and working principle. …


Current Sensor Fault Diagnosis For Induction Motor In Vector Control System, Sun Kai, Baina He, Sarah Odofin, Gu Yu 2019 1. School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255049, China;;

Current Sensor Fault Diagnosis For Induction Motor In Vector Control System, Sun Kai, Baina He, Sarah Odofin, Gu Yu

Journal of System Simulation

Abstract: A current sensor fault diagnosis method of induction motor in vector control system is proposed. A state-space form including sensor faults and environmental disturbances/noises of induction machine is described. An augmented observer is designed to simultaneously estimate system states, and current sensor faults. To attenuate the effects from the environmental disturbances/noises, a genetic algorithm is employed to design observer gain by minimizing the estimation error against environmental disturbances and noises. A simulation model based on Matlab and real-data of the induction motor collected by experiment is utilized to validate the proposed methods, which show the efficiency of the proposed …


Heat Transfer Simulation Of Vehicle Heat Exchanger In Plateau Environment, Xu Xiang, Wenchao Suo, Dingfu Yang, Surong Dong 2019 1. Department of Military Vehicle, Military Transportation University, Tianjin 300161, China;;

Heat Transfer Simulation Of Vehicle Heat Exchanger In Plateau Environment, Xu Xiang, Wenchao Suo, Dingfu Yang, Surong Dong

Journal of System Simulation

Abstract: The effect of heat transfer caused by plateau environment in vehicle heat exchanger was investigated. The heat transfer equation for heat exchanger was modified by introducing air parameters at different altitudes. A heat transfer modeling approach for vehicle heat exchanger was proposed by using the thermal network method. The heat transfer effect of the plateau and the flow state of fluid medium were analyzed in the vehicle heat exchanger by using the simulation software FlowMaster. Simulation results show that the decrease of pressure and density of air in altitude was the primary cause to heat transfer ability. …


Simulation On Anti-Swing Of Container Cranes Based On Iterative Learning Control, Liang Gang, Yiming Zhao, Hengming Qin 2019 Shanghai Maritime University, Shanghai 201306, China;

Simulation On Anti-Swing Of Container Cranes Based On Iterative Learning Control, Liang Gang, Yiming Zhao, Hengming Qin

Journal of System Simulation

Abstract: To achieve the purpose of reducing or even eliminating the fixed stop container’s swinging after container cranes positioning, thereby improving the efficiency of quayside container cranes, the PD-type iterative learning control is selected to perform simulation analysis. This selection is based on the analysis of dynamic properties of quayside container lifting systems and the qualities of the repetitive nature of the swing phase of the container. A fixed initial state is assumed, and the PD parameters are determined after several debugging tasks. Based on Simulink blocks, the entire iterative learning controller model is established to design lifting systems of …


Effect Of Rail Fracture On Train Shunt-Circuit Current Envelope, Youpeng Zhang, Zhao Jian, Bin Zhao 2019 School of Automation and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;

Effect Of Rail Fracture On Train Shunt-Circuit Current Envelope, Youpeng Zhang, Zhao Jian, Bin Zhao

Journal of System Simulation

Abstract: To analyze change rules of train shunt-circuit current amplitude envelope under the track circuit crack state, a distributed parameter equivalent mathematic model of ZPW-2000A track circuit crack state was constructed based on the transmission theory; and the effect of ballast resistances, the crack points and the crack equivalent impedances on train shunt-circuit currents amplitude envelope were studied using MATLAB. Experiment results show that the ballast resistance, the crack point and the crack equivalent impedance have great influence on train shunt-circuit current amplitude envelope before crack point; and the train shunt-circuit current amplitude envelope occurs discontinuity at the crack …


Review Of 3d Facial Expression Acquisition And Modeling Technology, Wang Shan, Xukun Shen, Qinping Zhao 2019 1. State Key Laboratory of Virtual Reality Technology and Systems, Beihang University, Beijing 100191, China;;2. School of New Media Art and Design, Beihang University, Beijing 100191, China;

Review Of 3d Facial Expression Acquisition And Modeling Technology, Wang Shan, Xukun Shen, Qinping Zhao

Journal of System Simulation

Abstract: Face is an important biological feature of human. High-fidelity 3D face construction is widely applied and has attracted the attention of researchers for a long time. Now the mature 3D model acquisition still depends on the expensive hardware and controlled lighting environment in the lab. However, academic focus has gradually transformed to researches based on daily living environment and low cost equipment. According to the source of input data, the existing works are divided into two categories: works under controlled environment and uncontrolled environment. Methods are summarized and classified based on the categories. Existing problems and future research directions …


Interactive Modelling On Smooth Weighted Distance Surface In Hmd Vr Environment, Xiaoqiang Zhu, Hongyi Pan, Xu Hao, Song Lei, Mengyao Zhu, Xiangyang Wang 2019 1. School of Communication and Information, Shanghai University, Shanghai 200444, China;;2. Institute of Smart City, Shanghai University, Shanghai 200444, China;

Interactive Modelling On Smooth Weighted Distance Surface In Hmd Vr Environment, Xiaoqiang Zhu, Hongyi Pan, Xu Hao, Song Lei, Mengyao Zhu, Xiangyang Wang

Journal of System Simulation

Abstract: An interactive modelling scheme in immersive VR environment is proposed, in which the point, line and polygon skeletons are inputted by handles of HMD (Head-Mounted Device). Weighted distance field is calculated in parallel with CUDA on GPU according to the varying radii, and then the iso-surface is extracted using paralleled marching cubes. In order to avoid the non-smoothness at interactions between different distance surface components, weighted filtering kernels are utilized to smooth the skeleton-based distance field with various radii in our modelling system, so that smooth blending model is produced from multi-component distance fields. In our system, …


Variable Scale Point Cloud Registration Algorithm, Shuifa Sun, Zhun Li, Kun Xia, Yunfei Shi, Jiquan Yang, Fangmin Dong 2019 1. China Three Gorges University Hubei Key Laboratory of Intelligent Vision Based Monitoring for Hydroelectric Engineering, Yichang 443002, China;;2. Nanjing Normal University Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing, Nanjing 210042, China;

Variable Scale Point Cloud Registration Algorithm, Shuifa Sun, Zhun Li, Kun Xia, Yunfei Shi, Jiquan Yang, Fangmin Dong

Journal of System Simulation

Abstract: To address the low registration accuracy issue caused by scale mismatch of two point clouds, a multi-scale point cloud registration algorithm is proposed based on the distance ratio invariance of the geometric center of gravity and centroid. The point cloud is firstly filtered. Then, the scale ratio calculation model of the point cloud data is established by computing the point cloud’s gravity center and centroid. Finally, according to the relationship between the registration error and the scale true value, the scale factor is refined step by step with ICP algorithm. For the noise and the inconsistent point in the …


Modeling Of Wheat Ears Growth Based On Bezier Surface, Junxiao Xue, Chenyang Sun, Mingliang Xu, Yin Hui, Haiyu Yu 2019 1. School of Software, Zhengzhou University, Zhengzhou 450000, China;;

Modeling Of Wheat Ears Growth Based On Bezier Surface, Junxiao Xue, Chenyang Sun, Mingliang Xu, Yin Hui, Haiyu Yu

Journal of System Simulation

Abstract: Simulation model of wheat growth has important theoretical significance and application value for wheat growth regulation and management. Study the growth of wheat ears from heading to maturity. We propose an unified modeling method for the grain, lemma and palea of wheat ears based on Bezier surface. Meanwhile, all the models are re-polygonized so that it can be easier to detect the collision. The method can simulate the growth of wheat ear with relatively high modeling efficiency. Experiment results show that the proposed method has very good modeling effect and the modeling of wheat ear at different growth stages …


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