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Study On Control Method Of Plane Steering Electro-Hydraulic Load Simulator, Xiaolin Liu, Jianmin Yin, Kun Yuan 2019 1. Civil Aviation University of China, Tianjin 300300, China;;

Study On Control Method Of Plane Steering Electro-Hydraulic Load Simulator, Xiaolin Liu, Jianmin Yin, Kun Yuan

Journal of System Simulation

Abstract: Aiming at the problems of low stability, low loading precision and slow response of the servo hydraulic load simulator, a control method based on the combination of the optimal quadratic theory and the improved feedforward compensation is proposed. This method is based on the optimal quadratic theory to design the optimal control algorithm to optimize the structural characteristics. The hydraulic cylinder piston displacement signals are used as the input of feedforward compensation control to design improved feedforward compensation controller. The simulation results show that this control method can not only improve the dynamic performance of the aircraft rudder electro-hydraulic …


Analysis Of Reconnaissance System Modeling And Simulation In Combat Simulation, Fan Rui, Yaxin Tan, Junqing Huang 2019 Army Academy of Armored Force, Military Exercise and Training Center, Beijing 100072, China;

Analysis Of Reconnaissance System Modeling And Simulation In Combat Simulation, Fan Rui, Yaxin Tan, Junqing Huang

Journal of System Simulation

Abstract: Reconnaissance system is a complex system that integrates various types of reconnaissance equipment and is an important component of the combat capabilities of the current system. Therefore, the reconnaissance system is modeled and simulated in the army combat simulation. It is a key research to discuss its operational effectiveness in a certain combat background. This paper starts from the basic concept of reconnaissance, abstracts the basic flow of reconnaissance activities, analyzes the composition of the equipment in the reconnaissance system, summarizes the simulation flow of the reconnaissance system in combat simulation, and gives the modeling analysis of the reconnaissance …


A Simulation Study Of Power Battery Grouping Equalization System, Zhu Hao, Daxing Xia 2019 Hunan University, School of Mechanical and Transportation Engineering, Changsha 410000, China;

A Simulation Study Of Power Battery Grouping Equalization System, Zhu Hao, Daxing Xia

Journal of System Simulation

Abstract: A grouping equalizer scheme of lithium-ion battery pack is proposed based on cuk chopper circuit and flyback transformer balanced circuits. The grouping equalizer process could be divided into two stages: balance of cell sub-group and balance between cell sub-group. Cuk chopper circuit is used in the balance of cell sub-group for transferring the energy between adjacent cells. Bidirectional flyback transformer is employed in the balance between cell sub-group. Any optional sub-group can be balanced and the balanced energy can be transferred bidirectionally. Finally, a balanced circuit model is created in Matlab/Simulink for simulation. Simulation results show that the grouping …


Oth Target Tracking Based On Transverse Earth Coordinate System In Arctic Region, Yongkan Sun, Pingping Zhang 2019 1.Dalian Naval Academy, Dalian 116018, China;;

Oth Target Tracking Based On Transverse Earth Coordinate System In Arctic Region, Yongkan Sun, Pingping Zhang

Journal of System Simulation

Abstract: Aiming at the problem of the deviation of the target information when taking the geographic north as the azimuth datum in the horizon target tracking in Arctic region (especially in the polar regions), a virtual method to re-partition the surface of the earth is proposed which can transform the geographic pole region into a virtual equatorial region. On the basis of the above, the transverse latitude and longitude grid, the transverse earth coordinate system and the transverse geographic coordinate system are constructed, The transverse geographic north is proposed as the azimuth datum, the target range is represented with the …


In-Cylinder Process Simulation Of Swashplate Revoloving Cylinder Piston Engine Based On Fluid-Structure Interaction, Li Xin, Chengshi Yang, Peng Bo 2019 The 705 Research Institute, China Shipbuilding Industry Corporation, Xi'an 710077, China;

In-Cylinder Process Simulation Of Swashplate Revoloving Cylinder Piston Engine Based On Fluid-Structure Interaction, Li Xin, Chengshi Yang, Peng Bo

Journal of System Simulation

Abstract: Using dynamic mesh technology, In-cylinder working process of the engine is detailedly designed in this article regarding the new swashplate revolving cylinder piston engine. We establish the numeral simulation model of the engine working process based on fluid-structure interaction, the pressure and temperature distribution of the In-cylinder gas in the six thermal process is obtained, and the temperature distribution of the hot end components is presented. The results show that the working process of the engine is reasonably organized. The biggest thermal load appears in the intake flow process. The wall temperature of the gas side is lower …


Numerical Simulation Of Thermal Properties Of Active Phased Array Antenna, Wang Yong, Ting Lu, Longwen Wu, Changwu Xiong, Weng Xia, Ping'an Du 2019 1. China Electronics Technology Group Corporation No.10 Research Institute, Chengdu 610036, China;;

Numerical Simulation Of Thermal Properties Of Active Phased Array Antenna, Wang Yong, Ting Lu, Longwen Wu, Changwu Xiong, Weng Xia, Ping'an Du

Journal of System Simulation

Abstract: The grid priority modeling and multi-level meshing techniques are applied to analyze the thermal properties of the active phased array antenna with the micro/mini channels cooling method for simplifying modeling process, reducing the mesh quantity and saving the cost of computation effectively. The multi-level meshing technique can refine the mesh near the boundary of the complex components significantly without changing the mesh quantity in the model, which improves the mesh’s quality obviously. Through the thermal simulation and experiment measurement of the antenna, the temperature and pressure field are obtained. It is proved that the addressed approach can …


Air Defense Fire Distribution Based On Cloud-Genetic Algorithm, Lei Ming, Bin Xie 2019 1.The 28th Research Institute of China Electronic Group Corporation, Nanjing 210007, China;;2. Science and Technology on Information Systems Engineering Laboratory, Nanjing 210007, China;

Air Defense Fire Distribution Based On Cloud-Genetic Algorithm, Lei Ming, Bin Xie

Journal of System Simulation

Abstract: Air defense fire distribution is a critical problem in the researches on air defense operation. This paper builds a fire distribution model with the maximization of strike as its optimization objective, and proposes a cloud model-based modified genetic algorithm based on the advantageous characteristics of cloud model in combination of genetic algorithm, which not only accelerates the rate of convergence and increases search efficiency of the original algorithm, but also preferably avoids the problems of local optimum and premature convergence. Simulation experiments have verified the feasibility of the modified algorithm.


Abnormal Behavior Detection Via Super-Pixels Time Context Feature, Chen Ying, Dandan He 2019 Key Laboratory of Advanced Control Light Process, Jiangnan University, Wuxi 214000, China;

Abnormal Behavior Detection Via Super-Pixels Time Context Feature, Chen Ying, Dandan He

Journal of System Simulation

Abstract: In order to accurately locate the abnormal behavior, an anomaly detection method based on time context features of super-pixels is proposed. For feature representation, the video frames are firstly segmented into super-pixels. The super-pixels of foreground are then selected according to their pixel ratios of foreground. Super-pixels matching adjacent frames are selected based on the gray-level histogram and the information of location to enhance the temporal context of super-pixel features. The statical value of multilayer histogram of optical flow of matched super-pixels are taken as the feature for detection. In the phase of detection, the sparse combination learning algorithm …


Hydrodynamic Characteristics Study Of Expendable Probe At Multi Cross Flow And Multi Attack Angle, Zhentao Chen, Liu Feng, Xiaolei Wang, Ye Song 2019 College of Meteorology and Oceanography, National University of Defense Technology., Nanjing 211101, China;

Hydrodynamic Characteristics Study Of Expendable Probe At Multi Cross Flow And Multi Attack Angle, Zhentao Chen, Liu Feng, Xiaolei Wang, Ye Song

Journal of System Simulation

Abstract: The cross flow and attack angle are the two main influencing factors in the process of expendable probe releasing and sinking. The numerical simulation model is developed based on the hybrid grid and $k-\varepsilon$ turbulent model, and the hydrodynamic characteristics of five cross flows and five attack angles are analyzed. The results show that the drag coefficient of the probe in the horizontal direction increases gradually, while the drag coefficient of the probe in the vertical direction increases slowly with the increase of the cross flow. The drag coefficient in the horizontal direction increases gradually with the increase of …


An Anti-Occlusion Adaptive Particle Filtering Algorithm, Li Ju, Mingwei Cao, Yu Ye, Xia Yu, Lifan Zhou 2019 1. School of Computer Science and Engineering, Changshu Institute of Technology, Changshu 215500, China;;2. Provincial Key Laboratory for Computer Information Processing Technology, Soochow University, Suzhou 215006, China;;

An Anti-Occlusion Adaptive Particle Filtering Algorithm, Li Ju, Mingwei Cao, Yu Ye, Xia Yu, Lifan Zhou

Journal of System Simulation

Abstract: Considering the influence of local occlusion on particle filter tracking algorithm, an anti occlusion adaptive particle filtering algorithm is proposed. It adopts a rectangle as the tracking window, and uses the K mean clustering algorithm to complete particle clustering in resampling, and then obtains the particle subgroup. It estimates the final state according to particles subgroups, and modifies the tracking window. When the area changes more than 5%, the tracking window maintains the same as the one in last frame. Otherwise, the tracking window will change according to the size of moving object, which is a self-adaptation process. At …


Optimization Of Frictionless Cylinder-Structure Based On Pso, Liu Yu, Gouxin Zhao 2019 BeiJing Institute of Petrochemical Technology Information Engineering School , Beijing 102617, China;

Optimization Of Frictionless Cylinder-Structure Based On Pso, Liu Yu, Gouxin Zhao

Journal of System Simulation

Abstract: Aerostatic frictionless cylinder is the critical component of pneumatic gravity compensation device, the key of its design is to take all related factors into consideration for optimum performance. To optimize the structure of aerostatic frictionless cylinder, the optimal parameters in the cylinder are proposed, which maximizes the bearing capacity in radial direction and keeps the leakage at a relatively low level. Through analyzing the structure of the aerostatic frictionless cylinder, a mathematic model of the aerostatic frictionless cylinder is deduced. Based on simulations, the relationship during the structural parameters, the bearing capacity and the leakage is acquired. It is …


Design Of Imu/Gps-Based Seamless Location System For Android, Sun Wei, Wang Ye, Ruibao Li, Yang Dan 2019 School of Geomatics, Liaoning Technical University, Fuxin 123000, China;

Design Of Imu/Gps-Based Seamless Location System For Android, Sun Wei, Wang Ye, Ruibao Li, Yang Dan

Journal of System Simulation

Abstract: The method of seamless combination of IMU and GPS module based on Android mobile terminal is researched and implemented, and the design scheme and experimental results are given. When the GPS signal is missing, the gait detection, heading calculation and track estimation can be carried out by using the IMU inertial sensor which is inherent in the mobile terminal to complete the seamless positioning. Based on the Android system and the open platform of Baidu map, the algorithm implementation and human-computer interaction can be completed in the mobile terminal. The test results show that the relative error of the …


Event-Triggered Scheme And Co-Design Of $H_{\Infty}$ Control In Networked Control System, Jingqi Fu, Wu Jie, Weili Shen 2019 1.Shanghai University of Mechatronic Engineering and Automation, Shanghai 200072, China;

Event-Triggered Scheme And Co-Design Of $H_{\Infty}$ Control In Networked Control System, Jingqi Fu, Wu Jie, Weili Shen

Journal of System Simulation

Abstract: Since the wireless network time-varying delay and communication channel bandwidth have great effects on networked control systems(NCSs), this paper studies an event-triggered scheme and a $H_{\infty}$control co-design method. Initially, a delay mathematic model of NCSs is constructed. In consideration of wireless network time-varying delay between event generator and zero order holder, this paper designs an improved event-triggered communication scheme. Furthermore, by applying a new Lyapunov-Krasovskii functional and linear matrix inequality method, a criterion for the delay-independent $H_{\infty}$ stabilization is derived, and the co-design method for gaining the trigger parameters and state feedback $H_{\infty}$ control is …


An Improved Algorithm Of Vire Based On Bp Neural Network, Hongshan Kong, Bin Yu 2019 Information Engineering University, Zhengzhou 450001, China;

An Improved Algorithm Of Vire Based On Bp Neural Network, Hongshan Kong, Bin Yu

Journal of System Simulation

Abstract: Aimed at the problem that the proper threshold affects the accuracy of positioning in VIRE algorithm, a RFID positioning method combining BP neural networks with VIRE algorithm is presented and is named BP-VIRE. BP-VIRE utilizes the same reader’s configuration and deployment as that of VIRE, and regards referenced tag RSSI and coordinate values as training samples, and constructs the positioning model based on neural networks with the help of BP algorithm which uses the method of error back propagation. According to the simulation results, compared with VIRE, BP-VIRE performance is better in the capability of positioning, esp. 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 …


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 …


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. …


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 …


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) …


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 …


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