Simulation On Transaction Connection Strength Considering Price Preference,
2019
1. School of Management, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China; ;
Simulation On Transaction Connection Strength Considering Price Preference, Zheng Wen, Yapeng Li, Yingying Ma
Journal of System Simulation
Abstract: Under LDP (Large-user Direct purchase) mode of power system, interests of the imbalance distribution exist in the power system in the long-term, due to the sensitivity of the larger user to the price to a certain extent. The impact of price preference on the transaction connection strength is analyzed, constructing the states of the interest distribution by using the Swarm simulation platform. The results of the simulation suggest that the higher the priority probability is, the more concentrated the power system becomes. It shows the non-natural monopoly caused by the market power. The results of this study can be …
Optimization Of Tip Clearance Patterns Of Variable-Pitch Axial Flow Fan,
2019
Key Lab of Condition Monitoring and Control for Power Plant Equipment of Education Ministry (North China Electric Power University),Baoding 071003, China;
Optimization Of Tip Clearance Patterns Of Variable-Pitch Axial Flow Fan, Xuemin Ye, Jianguang Cui, Chunxi Li
Journal of System Simulation
Abstract: The performance of the axial fan can be improved by optimization of blade tip pattern effectively. For a variable pitch axial flow fan of OB-84 type, the performance of the fan with uniform tip clearance and non-uniform tip clearance are simulated by using Fluent. The impacts of tip patterns on leakage flow field and loss distribution in the tip clearance are examined. The results reveal that when average tip clearance keeps constant, the total pressure rise and efficiency of the fan with convergent tip clearance patterns are higher than those of uniform tip clearance, and the domain of higher …
Predator-Prey Dynamics-Based Optimization,
2019
School of Management, Xi'an University of Architecture and Technology, Xi'an 710055, China;
Predator-Prey Dynamics-Based Optimization, Qiuqin Lu, Guangqiu Huang
Journal of System Simulation
Abstract: To solve the complex function optimization problem, a predator-prey dynamics optimization algorithm is proposed. The algorithm assumes that there are two species of predator and prey in an ecosystem. There is competition among the same species, the higher the population density, the more intense the competition, and then characteristics of populations are more likely to produce changes; strong populations are more likely to defeat weak populations when competition, and thus to obtain significant changes in their own characteristics. When predator populations eat prey populations, their characteristics also change. The competition operator, the predator-prey operator and the growth operator are …
Extensible Battle Management Ontology Language,
2019
Warfare Simulation Department of Exercise and Training Center, Academy of Army Armored Force, Beijing 100072, China;
Extensible Battle Management Ontology Language, Zaijiang Tang, Xiangzhong Xue, Xue Qin
Journal of System Simulation
Abstract: The interoperability of command and control system with combat simulation system is an important and difficult problem in the construction of practical training environment. Aiming at the existing problems of semantic interoperability of language description, the battle management language, web ontology language and extensible markup language are studied. Based on ontology theory, the extensible battle management ontology language (XBMOL) is proposed. The syntax structure and semantic annotation of XBMOL are analyzed as an extension to the C-BML. The XBMOL 6W1H architecture is designed, and the extensible grammatical structure and semantic tagging are described. An example with XBMOL is given …
Service Recommended Trust Algorithm Based On Cloud Model Attributes Weighted Clustering,
2019
1. Zhengzhou Institute of Information Science and Technology, Zhengzhou 450001, China; ;2. State Key Laboratory of Mathematical Engineering and Advanced Computing, Zhengzhou 450001, China;
Service Recommended Trust Algorithm Based On Cloud Model Attributes Weighted Clustering, Jindong Wang, Zhiyong Yu, Hengwei Zhang, Fang Chen
Journal of System Simulation
Abstract: In cloud computing, there are cloud services of different qualities. How to choose credible and reliable service has become a key issue when users select services. Aiming at the shortcomings of the existing evaluation methods, a service clustering method based on attributes weighted cloud model is proposed. The users’ evaluation similarity with weighted Pearson correlation coefficient method based on service clustering is calculated. The users’ similarity combined with the index weights of users’ service selection is computed. The nearest neighbors are gotten. The recommendation trust of the services with the recommendation trust algorithm is obtained. Simulation results …
Indoor Positioning Algorithm Based On Zigbee And Improved Radio Frequency Identification,
2019
Engineering Research Center of Internet of Things Technology Applications Ministry of Education, Wuxi 214122, China;
Indoor Positioning Algorithm Based On Zigbee And Improved Radio Frequency Identification, Dahu Yan, Yangjie Xu
Journal of System Simulation
Abstract: Since the traditional RFID positioning technology relies on the Internet and is especially constrained by the positioning distance in the process of positioning the tags with poor positioning accuracy, a novel positioning algorithm is proposed based on the ZigBee and improved VIRE algorithm. By using the proposed algorithm, ZigBee nodes are adopted to achieve the formation of network information transmission to replace the traditional wired communication. Gaussian-Kalman filter is used to deal with the sampling data of the limited preselected reference node signal strength. The algorithm adopts signal propagation loss model to calculate the RSSI values of virtual reference …
Modeling And Simulation Of Missile Defense M/M/N Queueing System,
2019
Air and Missile Defense College, Air Force Engineering University, Xi’an 710051, China;
Modeling And Simulation Of Missile Defense M/M/N Queueing System, Longyue Li, Fuxian Liu, Huizhen Zhao
Journal of System Simulation
Abstract: To simulate the process of ballistic missile defense and to study the effectiveness of defense, the M/M/N queueing system of missile defense was modeled and simulated. A queueing modeling framework was given to explain the meaning and distribution of related parameters. The M/M/N/N and M/M/N/C queueing models were proposed for short defense depth and long defense depth respectively, and the single target channel and the multiple target channels were distinguished in each model. How to deal with the different types of missile defense system based on equivalent replacement method were also considered. Simulation examples verified the main …
De-Noising Method Of Eeg Signal Based On Mmtd And Wavelet Hard-Threshold,
2019
College of Computer, Nanjing University of Posts and Telecommunications, Nanjing 210000, China;
De-Noising Method Of Eeg Signal Based On Mmtd And Wavelet Hard-Threshold, Guoqiang Yan, Ningning Zhou, Shaobai Zhang
Journal of System Simulation
Abstract: To overcome the shortage of losing partial important information of hard-threshold method with EEG signal de-noising process, a novel de-noising method based on the combination of measuring of medium truth degree (MMTD) and EEG is proposed. By decomposing noisy signals of wavelet transform, handling threshold of high-frequency wavelet coefficients in every layer, and reconstructing post-processing of the wavelet coefficients, the purpose of noise elimination can be guaranteed. Under different noise intensity, the experimental results show that the MAWH (MMTD and wavelet hard-threshold) method has perspective of lower RMSE and higher SNR compared to hard-threshold and soft-threshold.
Satisfactory Fault-Tolerant Control Of Nncs Under Event-Triggered Sparse Data Transmission,
2019
1. College of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, China; ;2. Automation Institute of Lanzhou Petrochemical of Petro China, Lanzhou 730060, China;
Satisfactory Fault-Tolerant Control Of Nncs Under Event-Triggered Sparse Data Transmission, Yajie Li, Li Wei
Journal of System Simulation
Abstract: Adopting the discrete event-triggered communication scheme (DETCS), the satisfactory fault-tolerant control of nonlinear networked control system (NNCS) under the sparse data transmission circumstance was studied. Based on the background of event-triggered sparse data transmission, a closed-loop model with actuator failure and actuator saturation was established. Based on Lyapunov-Krasovskii function and the safety degree definition proposed in this paper, a sufficient condition was presented for NNCS with the generalized H?/H2 performance under the case of actuator saturation and actuator failure, which was the contractively invariant set of fault-tolerance with α-safety degree, and …
Soft Shadow Rendering Algorithm Based On Gpu’S Shadow Line,
2019
Fujian Normal University Faculty of Software, Fuzhou, 350108, china;
Soft Shadow Rendering Algorithm Based On Gpu’S Shadow Line, Shanxiao Gao, Wu Xian
Journal of System Simulation
Abstract: To solve the problem of soft shadow rendering algorithm on shaded body surfaces, a new algorithm based on shadow lines which can render better soft shadow with less cost computation overhead is presented. GPU is used to create shadow lines which include starting point, ending point and shading value. The computer shader (CS) is used to amend the shading value by inverse distance weighting function. In the phase of shadow rendering, the shadow lines dataset is used to calculate the current pixel's shading value by trigonometric interpolation. Experimental result shows that the algorithm can solve the soft shadow …
Modeling And Simulation On Delay Of Central Heating System For Temperature Prediction,
2019
Dalian University of Technology, Dalian 116024, China;
Modeling And Simulation On Delay Of Central Heating System For Temperature Prediction, Sun Tao, Shaoxiong Ji
Journal of System Simulation
Abstract: Heating prediction is essential for energy saving. However, it is difficult to some extent because the central heating system (CHS) is nonlinear with large-scaled delay and other characteristics. Based on physical laws of the CHS, a novel model combining pruning algorithm with the least mean square is proposed to solve the problem of delay and predict the temperature. The model with the delay taking into consideration conforms to the law of thermal transmission. The pruning algorithm lowers the computational complexity. Simulations using gradient descent least squared regression (LSR), support vector machine (SVM), least-squared support vector machine (LS-SVM) …
Simulation Of Two Stages-Variant Growth Evolution Model Of High-Speed Railway And Civil Aviation Compound Network,
2019
1. Nanjing Communications Institute of Technology, Nanjing 211188, China; ;2. Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
Simulation Of Two Stages-Variant Growth Evolution Model Of High-Speed Railway And Civil Aviation Compound Network, Xu Feng, Jinfu Zhu, Jianjun Miao, Rongrong Ding
Journal of System Simulation
Abstract: Combining the special evolving characteristics of the high-speed railway and civil aviation compound network, an evolution model which has two stages with variant growth mechanism and variable parameters is constructed, and the rationality of the model is verified through mathematical simulation. The model divides the evolutionary process into two stages: the stage of single-point growth pattern, and the stage of variant and alternant growth pattern. The probability of two sub-networks’ random and commutative growth could be controlled by changing the parameters’ values, and then the evolving rhythm and scale of the compound network could be adjusted. The simulation results …
Flow Field Analysis Of Pipeline Pig Receiving Trap,
2019
1.School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China; ;
Flow Field Analysis Of Pipeline Pig Receiving Trap, Chuanjun Han, Yu Cheng, Xingzhi Duan, Li Qi
Journal of System Simulation
Abstract: To study the influence of piping diameter on the flow field characteristics when pig receiving trap is working, the finite element model of pig receiving trap whose type is P6.3MPa DN700/DN600 was established, and the effects of the diameters changes of vent pipe and blow-off pipe were simulated. The effects caused by the pig running speeds on the flow field of the pig receiving trap were studied. The results show that in the pig receiving trap, there is the maximum pressure in the left side of pig staying and the pressure begins to decrease and easy to form swirls …
Elevator Traffic Pattern Recognition With Fcm Clustering Based Fuzzy Neural Network,
2019
1.College of Engineering, Bohai University, Jinzhou 121013, China; ;
Elevator Traffic Pattern Recognition With Fcm Clustering Based Fuzzy Neural Network, Zhenshan Yang, Wenjiao Yue
Journal of System Simulation
Abstract: Elevator traffic demand pattern recognition is the prerequisite for effectively implementing the strategies of elevator group control system. In view of the characteristics of time-varying, nonlinear and uncertainty of elevator traffic demand, an elevator traffic pattern recognition method with FCM (Fuzzy C-means) clustering based fuzzy neural network is presented. The method introduces the fuzzy logic into the calculation and learning of BP neural network, and employs FCM clustering algorithm to cluster the original traffic demand to realize the fuzzy partition of the input space of fuzzy system to determine the initial value of network membership function and clustering center …
Application Of Multiple-Stepwise And Kalman Filtering In Haze Forecast,
2019
1.School of Computer and Software, Nanjing University of Information science and Technology, Nanjing 210044, China; ;
Application Of Multiple-Stepwise And Kalman Filtering In Haze Forecast, Yunhao Xian, Hengde Zhang, Yonghua Xie, Le Yang
Journal of System Simulation
Abstract: Considering the importance of objective haze forecast and the low accuracy rate of haze forecast, a new haze objective forecast correction method based on the multiple stepwise regression algorithms and the Kalman filtering algorithm is proposed. The multiple stepwise regression method is used to control the physical factor of the dependent variable, and the visibility forecast equation is established. The Kalman filtering method is adopted to correct the regression coefficient in multivariate stepwise regression algorithm according to the actual data, and the haze objective forecast correction model is established. The experiments are carried out in Beijing, Guangzhou, Nanjing and …
Finite Element Analysis Of Magnetic Flux Leakage Detection For Transverse Cracks Of Sucker Rod,
2019
School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China;
Finite Element Analysis Of Magnetic Flux Leakage Detection For Transverse Cracks Of Sucker Rod, Zhang Ou, Xueye Wei, Wang Pei, Shuxin Yan
Journal of System Simulation
Abstract: The modeling and testing technology of the surface transverse cracks of complex defecting for sucker rod were studied, and a finite element simulation model of rod transverse defects was built. The magnetic flux leakage testing simulation was carried out by using ANSYS software, and the changing trend between the lift-off value and the leakage magnetic field was obtained. Two kinds of different magnetization modes of single coil and double coils were analyzed, and the result showed that the double coils magnetization is superior to single coil magnetization. The two dimensional and three dimensional magnetic flux leakage testing …
Counterforce Characteristics Of Shrapnel In Magnetic Latching Relay Based On Abaqus,
2019
Institute of Electrical Apparatus, Hebei University of Technology, Tianjin 300130, China;
Counterforce Characteristics Of Shrapnel In Magnetic Latching Relay Based On Abaqus, Xiuping Su, Jiaying Dong, Yanhua Qiao, Huang Min
Journal of System Simulation
Abstract: A 3D model of contact system in magnetic latching relay was established by the software Pro/E, and the shrapnel deformation by force was analyzed in the contact system using finite element analysis software Abaqus. The advantages of Abaqus software in the multibody system simulation were analyzed and summarized, a modeling and simulation approach to contact multibody system in magnetic latching relay based on Abaqus was proposed. The selection of element type, technology of mesh division, definition of boundary condition, and establishment of finite element model were studied. The non-convergence problems were solved in the simulation analysis by adding binding …
Optimal Operation Of Grid-Connected Microgrid Based On Abc Algorithm,
2019
Department of Mechanical and Electrical Engineering, Suzhou Institute of Industrial Technology, Suzhou 215104, China;
Optimal Operation Of Grid-Connected Microgrid Based On Abc Algorithm, Qiuli Cui
Journal of System Simulation
Abstract: An optimal scheduling model of grid-connected microgrid composed of wind power generators, photovoltaic cells, fuel cells and batteries is established. The economy and environmental protection elements are considered in this model. To maximize the role of peak shaving and valley filling in microgrid system, based on the time-of-use price mechanism, the heuristic rules combined with peak shaving and valley filling is used to design a grid-connected energy scheduling strategy. By monitoring the net load state and the price time interval, and adjusting the particular state of the micro source of power, the system optimal energy scheduling state is obtained. …
Power Control Algorithm Based On Non-Cooperative Game Theory Of Wbans,
2019
School of Mathematics and Computer Science, Anhui Normal University, Wuhu 241000, China;
Power Control Algorithm Based On Non-Cooperative Game Theory Of Wbans, Xu Yong, Mengya Ke, Fen Liu, Qianming Zha
Journal of System Simulation
Abstract: A non-cooperative self-adaptive power control algorithm is proposed based on the model of TDMA wireless body area networks (WBANs) interference. The algorithm is put forward using payoff function and cost function as utility functions.The transmitting power vector is obtained by the optimal response strategy update. It is proved that the network can reach Nash Equilibrium with the transmitting power vector, and in this situation all the users’ utility function is maximized. The Matlab is applied to simulation process of the algorithm, during which simulation has been carried out with different parameters. Compared with …
Aerodynamic Noise Generating Mechanism Of Corbula Type Throttle Valves,
2019
1. Southwest petroleum university institute of electrical and mechanical engineering, Chengdu 610500, China; ;
Aerodynamic Noise Generating Mechanism Of Corbula Type Throttle Valves, Yueqin Li, Xiao Fei, Fan Ming, Xiaodong Xu
Journal of System Simulation
Abstract: The throttle mechanism of pneumatic noise and the noise spectrum characteristics of corbula type throttle valve are studied by targeting on aerodynamic noise problems caused by gas when flowing through the corbula type throttle valve, the method of CFD software with acoustic software simulationis used as well. The studies have showed that when the flow of fluid flows through shrink section, it can be effected by throttling effect, the speed of gas on the hole exit increases rapidly to form under-expanded supersonic jet, causing strong turbulence and shock wave noise. The conclusionis that the construction of throttling …
