Modeling And Simulation Of Heat Transfer Process Of Coke Oven Twin Flue,
2020
1. Institute of Physics and Information Science, Hunan Normal University, Changsha 410081, China;;2. College of Electrical and Information Engineering, Hunan University, Changsha 410082, China;
Modeling And Simulation Of Heat Transfer Process Of Coke Oven Twin Flue, Kun Shen, Wang Ling, Tianyu Ma
Journal of System Simulation
Abstract: To study the heat transfer process of flues in 5.5m coke oven with waste gas circulation, the heat transfer mechanism of flue in coke oven's combustion chamber and gas exchange process of twin flue were analyzed; the simulation models of upflow flue and downflow flue were built respectively. According to tables of coke pushing and coal charging sequence in coking production, combining with gas exchange process in twin flue, the simulation analysis on surface temperature characteristics of twin flue walls in real coking production process were achieved by the designed simulation model. The simulation results show that …
Credibility Evaluation Of Hardware-In-The-Loop Simulation Test For Guided Weapons,
2020
China HuaYin Ordnance Test Center Key Lab of Guided Weapons Test and Evaluation Simulation Technology, Huayin 714200, China;
Credibility Evaluation Of Hardware-In-The-Loop Simulation Test For Guided Weapons, Jianbin Dou, Xiaobing Wang, Bin Shan, Zhang Yan
Journal of System Simulation
Abstract: The thesis explained the concept of credibility evaluation of hardware-in-the-loop simulation. The models and the processes were introduced in three parts: credibility evaluation of simulation system, monitoring of simulation test process, and credibility evaluation of simulation results. The credibility evaluation model of hardware-in-the-loop simulation system was built based on TOPSIS and the credibility evaluation model of simulation results was built based on simulation and firing practace. This way could answer the credibility of hardware-in-the-loop simulation, and provide strong support for hardware-in-the-loop simulation in guided weapons test and evaluation.
Application Of Distributed Clustering In Anomaly Detection Of Farm Environment Data,
2020
1. School of Mechatronics Engineering and Automation, Shanghai University, Shanghai 200072, China;;2. Shanghai Key Laboratory of Power Station Automation Technology, Shanghai 200072, China;
Application Of Distributed Clustering In Anomaly Detection Of Farm Environment Data, Deng Li, Honglin Pang, Ling Wang, Minrui Fei
Journal of System Simulation
Abstract: The massive farm environment data stored in the distributed system should be dealt with so as to provide abnormal environment reference and make preventive strategies for crop yield. Considering the characteristics of the farm environment data, the Dirichlet Process Mixture Model (DPMM) clustering is implemented with the farm environment data on Hadoop and the anomaly detection method of the farm environment is proposed based on clustering analysis. Under the framework of MapReduce, Map stage implements the distribution of the sample points to the models; Reduce stage completes the update of models and the number of clusters. The performance has …
Application Of Kpca-Esn Method In Wi-Fi Based Indoor Positioning,
2020
College of Automation and Electrical Engineering, Lanzhou Jiao Tong University, Lanzhou 730070, China;
Application Of Kpca-Esn Method In Wi-Fi Based Indoor Positioning, Li Jun, Chen Ying
Journal of System Simulation
Abstract: Aiming at the problem that the positioning accuracy is affected by the dynamic indoor environment and time-varying received signal strength (RSS) values, a Wi-Fi based indoor positioning method using kernel principal component Analysis (KPCA) and echo state networks (ESN) is proposed. The KPCA method is used to preprocess the RSS fingerprints effectively and extract the nonlinear principal components of the inputs of the model. On the basis of KPCA, the extracted principal components are taken as the inputs to the ESN network, the nonlinear mapping between corresponding positioning features and physical locations is then established by the ESN. …
Truck Scheduling For Delivering Containers Among Multiple Container Terminals Based On Truck Appointment System,
2020
1. School of Transportation Management, Dalian Maritime University, Dalian 116026, China;;2. Institute of Strategy Management and System Planning, Dalian Maritime University, Dalian 116026, China;
Truck Scheduling For Delivering Containers Among Multiple Container Terminals Based On Truck Appointment System, Houming Fan, Zhenfeng Guo, Yang Yu
Journal of System Simulation
Abstract: Based on thetruck appointment system which is used for coping with the serious congestion in the port caused by trucks irregular arrival at peak time, the truck scheduling problem for delivering containers from outside yard to multiple container terminals is studied.Under the premise of meeting the requirements of container arrivals for export vessels, a truck scheduling model is built to reduce the outside yard's operation cost with the objective of minimizing the quantity of the dispatched trucks. A modified ant colony algorithm is designed to solve the model, and the truck scheduling plan for delivering containers to different terminals …
Compressed Cooperative Eigenvalue Spectrum Sensing For Radio Signal,
2020
1. Wireless Innovation Lab, School of Information Science and Engineering, Yunnan University, Kunming 650091, China;;
Compressed Cooperative Eigenvalue Spectrum Sensing For Radio Signal, Jingjing Yang, Feng Yun, Zhigang Chen, Tang Hao, Huang Ming
Journal of System Simulation
Abstract: Detecting the abnormal radio emission through radio monitoring is an important task of radio management. A regional cooperative compressed spectrum sensing model is proposed. A multi-node sensing system based on software defined radio platform is built, and the effectiveness of cooperative spectrum sensing is demonstrated. Results show that a high detection probability could be achieved at a suitable decision threshold based on the test statistics extracted from the eigenvalue of the received signal; what's more, compressed spectrum sensing employed to the detection system greatly reduced the size of the data transmitted from the sensing nodes to the fusing node. …
A Dynamic Routing Protocol Which Can Achieve Fast Convergence Of Meo/Leo Network,
2020
Key Laboratory of Communication and Network, Dalian University, Dalian 116622, China;
A Dynamic Routing Protocol Which Can Achieve Fast Convergence Of Meo/Leo Network, Chengsheng Pan, Weigeng Lai, Huaifeng Shi
Journal of System Simulation
Abstract: In view of the routing convergence slow problem caused by the large delay and the topological structure high dynamic performance of the satellite network, a dynamic routing protocol which can achieve fast convergence of MEO/LEO double-layer satellite network routing is put forward. The protocol based on the combination of Virtual Topology Routing Strategy and link state routing protocol introduces the idea of network clustering. In the process of satellite network routing convergence, the whole network is divided into cluster management, and a covering clustering algorithm for MEO/LEO double layered satellite networks is proposed, which reduces …
Research And Implementation Of Egr Performance Evaluation For Turbocharged Diesel Engine,
2020
1. Harbin Engineering University, College of Power and Energy Engineering, Harbin 150001, China;;
Research And Implementation Of Egr Performance Evaluation For Turbocharged Diesel Engine, Xianghuan Zu, Yinyan Wang, Chuanlei Yang, Jianwei Du, Jialun Wang
Journal of System Simulation
Abstract: To solve the optimization of turbocharged diesel engine combustion and emissions performance for different EGR rate under different working conditions, the operation parameters of the diesel engine under different EGR rate was obtained through experiment at first; then the specific fuel consumption, NOx, soot and cylinder pressure were selected as decision targets and the evaluation model for turbocharged diesel engine performance under different EGR rate was established based on multi-objective grey decision, finally optimum EGR scheme was achieved. A simulation platform for EGR performance evaluation was designed by MATLAB which simplifies the modeling process and improves the …
Distributed Power Emergency Rescue Perception And Cooperative Information Interaction Technology,
2020
1. Information and Telecommunication Branch, State Grid Anhui Electric Power Company, Hefei 230061, China;;
Distributed Power Emergency Rescue Perception And Cooperative Information Interaction Technology, Xiaojun Xie, Hanchen Lu, Ruoxin Shi
Journal of System Simulation
Abstract: An emergency rescue technology for modern vehicle was proposed based on the implementation process of positioning, communication and task. The key subsystems of information processing and multi-link message in the rescue system were developed. The cooperative interaction method and technical scheme of emergency command system were based on multi-link communication. To improve the communication effectiveness between the emergency command center and emergency rescue vehicles under harsh conditions, the problems of short message communication and vehicle data transmission were solved by establishing a framework for directing side and the vehicle side. Design and implementation of the system through the field …
Modeling And Simulation Of Radar Networking Anti-Stealth Based On The Detection Probability,
2020
Air Force Engineering University, Xi'an 710051, China;
Modeling And Simulation Of Radar Networking Anti-Stealth Based On The Detection Probability, Bin Chen, Chuangming Tong, Ximin Li
Journal of System Simulation
Abstract: For the scene of stealth target penetration against radar network, an evaluation model of detection effectiveness is established by taking the detection probability of the netted radar as an evaluation index. Based on the target's Radar Cross Section (RCS) data, the relationships among the false alarm probability, detection probability and signal to noise ratio are analyzed. A method using signal detection probability of the radar network is proposed with the Rank “K” principle of the fusion center. The RCS of stealth target is analyzed utilizing physical optics and method of equivalent currents. The detection probability of radar …
Simulation Of Influence Of Lightning On Internal Electromagnetic Environment Of Computer,
2020
School of Applied Science of Beijing Information Science and Technology University, Beijing 100192,China;
Simulation Of Influence Of Lightning On Internal Electromagnetic Environment Of Computer, Gaihong Du, Yangmeng Tian, Caixia Wang, Hongwei Wang
Journal of System Simulation
Abstract: Through XFDTD software simulating strong lightning electromagnetic pulse of 50KV lightning electric field strength, rising edge about 50ns, and pulse width about 2000ns coupled with a desktop computer, the curves of the coupled electric field with time and the curves of the energy density with time at several typical locations in the chassis are obtained; the shielding effectiveness of different locations inside the computer is analyzed. Simulation results suggest that the electromagnetic field strength produced in the chassis has no damage to the computer node while coupling energy generated in the hole is large in comparison with the threshold …
Hybrid Rzf Precoding Algorithm For Massive Mimo System,
2020
School of Information Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China;
Hybrid Rzf Precoding Algorithm For Massive Mimo System, Bin Xie, Shumin Xie, Shurui Liu
Journal of System Simulation
Abstract: In view of the high system complexity and high cost of the multi-user Massive MIMO system based on the traditional full digital precoding, a hybrid analog and digital RZF precoding is proposed. Based on the consideration of the channel noise, the inter-user interference and the system structure, the analog precoding matrix is sectionally designed with the combination of MRT precoding and RZF precoding, and for the digital part, a low dimension RZF precoding is used on the basis of the optimized channel matrix. After the optimization design, both the number of RF chain and the dimension of the digital …
Distributed Estimation Algorithm For Multi-Dimensional Multi-Choice Knapsack Problem,
2020
1. College of Computer Science, Human Normal University, Changsha 410081, China;;2. Human Radio and Television University, Changsha 410004, China;
Distributed Estimation Algorithm For Multi-Dimensional Multi-Choice Knapsack Problem, Tan Yang, Liu Zhang, Zhou Hong
Journal of System Simulation
Abstract: As it is difficult to realize local optimization of the Multidimensional Multiple-choice Knapsack Problem (MMKP), the Estimation of Distribution Algorithms (EDA) is applied to optimize the MMKP. In order to improve the local optimization ability of EDA, value weight factors of items for selection are built to improve the EDA initial model and probabilistic model updating methods. The impact of the extreme effects on the algorithm optimization process is balanced to overcome the defect that the local optimization ability of the traditional EDA is weak. A new non-feasible solution repair mechanism is adopted to maintain the facilitation of machine …
Sensorless Control Of Permanent Magnet Synchronous Motor With Improved Sliding Mode Observer,
2020
Engineering Research Center of Internet of Things Technology Applications Ministry of Education,Jiangnan University, Wuxi 214122, China;
Sensorless Control Of Permanent Magnet Synchronous Motor With Improved Sliding Mode Observer, Li Jie, Wang Yan, Zhicheng Ji, Dahu Yan
Journal of System Simulation
Abstract: With the purpose of improving the performance of sensorless control system of permanent magnet synchronous motor (PMSM), an improved sliding mode observer based on stator resistance online identification is proposed. These ctional hyperbolic tangent function is adopted as switching function, combined with variable sliding mode gain to weaken the high frequency chattering. Through the use of Lyapunov stability theory, the stator resistance online identification is adapted for improving the estimation accuracy of observer. Fractional order phase-locked loop is employed to estimate the rotor position and speed information from observed back EMF so that computing complexity caused by traditional phase …
Thermodynamic System Analysis Of A New Double-Bladder Accumulator,
2020
1. Fujian University of Technology, Fuzhou 350108, China;;
Thermodynamic System Analysis Of A New Double-Bladder Accumulator, Zhao Wei, Ye Qian
Journal of System Simulation
Abstract: A new double-bladder accumulator is introduced to improve the efficiency of bladder accumulator, and the dynamic equations for the new type accumulator are established. Based on the simulation results of temperature and pressure, the generalized Maxwell model of double-bladder accumulator is deduced, and the concept of thermodynamics spring is put forward. On account of simulation results, it shows that the new double-bladder accumulator has better operational efficiency and losses coefficient than that of the old type. The internal relations among the generalized Maxwell model, thermodynamics spring and operating parameters are analyzed with the purposes of upgrading design and proper …
Design Of Anti -Windup Controller For Srmdirect Instantaneous Torque System,
2020
School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;
Design Of Anti -Windup Controller For Srmdirect Instantaneous Torque System, Xiaofei Qin, Liu Jie, Li Feng
Journal of System Simulation
Abstract: In the direct instantaneous torque control system of switched reluctance motor, there is a nonlinear saturation in the speed outer loop controller. The integral control link of the controller will accumulate the error and increase the error gradually, resulting in the saturation effect of the controller and reducing the performance of the system. In this regard, an anti- windup adaptive PID controller is proposed on the basis of the traditional speed controller. This method integrates the input saturation error of controller and adjusts the integral term of controller by adaptive coefficient, so that it can quickly desaturation when the …
Visual Analysis Of Literature Review Of Phase Space Reconstruction,
2020
School of Management of Xiamen University, Xiamen 361005, China;
Visual Analysis Of Literature Review Of Phase Space Reconstruction, Meng Li, Yeping Bi
Journal of System Simulation
Abstract: The primary object of the paper is to reveal the development process and prospect of phase space reconstruction theory. The technique applied is referred as CiteSpace Ⅲ, a visualized analysis software for citation. The research method of literature metrology was used to classify the fifteen hundred papers from the Web of Science platform related with “phase space reconstruction” into different priorities according to time distribution, spatial distribution, citation and author distribution. All results were displayed in figures and tables. The hot spot and trend of phase space reconstruction were discussed based on the keywords co-occurrence graph and keywords time …
Memcapacitor Model Based On Memristor,
2020
1. School of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan 430081, China;;
Memcapacitor Model Based On Memristor, Zhaohui Gan, Yuxin Wu, Jiang Min, Shiying Zhang
Journal of System Simulation
Abstract: After physical model discovery of memristor in HP lab, the researchers put forward the concept of memcapacitor according to circuit theory. However, the physical object of the memcapacitor has not been found so far. In order to research the memcapacitor, researchers often use other components and circuits to simulate a memcapacitor. After analyzing the existing model of memcapacitor, a new nonlinear transformation method is proposed to transform a memristor into a memcapacitor, by which a nonlinear model of memcapacitor based on the memristor is constructed. The Pspice simulation experiments showed that the model successfully simulated the basic characteristics of …
Distributed Modeling And Simulation Method Of Equipment Support System Based On Multi Agent,
2020
Department of Automation in Tsinghua University, Beijing 100084, China;
Distributed Modeling And Simulation Method Of Equipment Support System Based On Multi Agent, Lili Yin, Kou Li, Wenhui Fan
Journal of System Simulation
Abstract: The role of equipment support system becomes more and more important. In view of its large scale and high complexity, it is of great practical significance to study the equipment support system by using distributed modeling and simulation technology. A simulation modeling method of equipment support system based on multi-Agent technology is proposed. The type and function of Agent in the system is designed, and the interaction between them is described. The system architecture based on multi-Agent distributed modeling and simulation is presented. Distributed prototype system of equipment support system based on multi-Agent is designed and implemented by open-source …
Solid-Liquid Two-Phase Flow Simulation Of Hydrodynamic Suspension Polishing,
2020
Key Laboratory f E&M, Ministry of Education&Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, China;
Solid-Liquid Two-Phase Flow Simulation Of Hydrodynamic Suspension Polishing, Shengwei Zhu, Lihui Zhang, Hong Tao, Zhang Cheng
Journal of System Simulation
Abstract: According to the new method of hydrodynamic suspension polishing, CFD software is used to simulate the polishing to obtain the distribution of fluid pressure and the velocity of the particles impacting on the work piece surface under different working conditions by the method of orthogonal design. The simulation results show that the rotational speed ω of the disc is the main factor affecting the dynamic pressure and the abrasive particle velocity, while the machining gap H is the secondary factor,and the least influence factor is the polishing liquid concentration φ. The optimal design parameters are: ω=1500 r/min, …
