Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Operations Research, Systems Engineering and Industrial Engineering (4024)
- Physical Sciences and Mathematics (4002)
- Computer Engineering (3989)
- Computer Sciences (3964)
- Artificial Intelligence and Robotics (3940)
-
- Numerical Analysis and Scientific Computing (3924)
- Social and Behavioral Sciences (68)
- Systems Engineering (66)
- Business (46)
- Computer and Systems Architecture (38)
- Digital Communications and Networking (36)
- Law (31)
- Other Computer Engineering (31)
- Psychology (26)
- Electrical and Computer Engineering (25)
- Political Science (25)
- Cognitive Science (24)
- Computer Law (24)
- Military, War, and Peace (24)
- National Security Law (23)
- Cognitive Psychology (22)
- Intellectual Property Law (22)
- International Relations (22)
- Mechanical Engineering (21)
- Operational Research (20)
- Risk Analysis (19)
- Business Administration, Management, and Operations (18)
- Public Affairs, Public Policy and Public Administration (17)
- Institution
-
- China Simulation Federation (3924)
- Old Dominion University (78)
- Portland State University (39)
- University of South Florida (27)
- Embry-Riddle Aeronautical University (13)
-
- University of Texas at El Paso (11)
- Binghamton University (8)
- Kennesaw State University (8)
- Air Force Institute of Technology (7)
- University at Albany, State University of New York (7)
- Washington University in St. Louis (7)
- California State University, San Bernardino (6)
- University of Arkansas Little Rock (5)
- Walden University (5)
- University of Nebraska - Lincoln (4)
- City University of New York (CUNY) (3)
- Clemson University (3)
- Dakota State University (3)
- Montclair State University (3)
- University of Arkansas, Fayetteville (3)
- American University in Cairo (2)
- Brigham Young University (2)
- Cal Poly Humboldt (2)
- California Polytechnic State University, San Luis Obispo (2)
- Harrisburg University of Science and Technology (2)
- Illinois State University (2)
- Louisiana Tech University (2)
- Missouri University of Science and Technology (2)
- Tashkent State Technical University (2)
- The University of Akron (2)
- Keyword
-
- Simulation (140)
- Path planning (76)
- Deep learning (49)
- Genetic algorithm (48)
- Digital twin (47)
-
- Numerical simulation (45)
- Virtual reality (43)
- Multi-objective optimization (40)
- Modeling and simulation (39)
- Modeling (35)
- Particle swarm optimization (35)
- Reinforcement learning (35)
- Deep reinforcement learning (29)
- Fault diagnosis (29)
- Attention mechanism (28)
- Neural network (27)
- Simulation model (26)
- UAV (26)
- System simulation (24)
- Complex network (22)
- Visualization (22)
- Machine learning (21)
- System dynamics (21)
- Virtual simulation (21)
- DRL (20)
- Optimization (20)
- Trajectory planning (19)
- Multi-agent (18)
- Parameter identification (17)
- Permanent magnet synchronous motor (17)
- Publication Year
- Publication
-
- Journal of System Simulation (3924)
- Engineering Management & Systems Engineering Theses & Dissertations (35)
- Dissertations and Theses (33)
- Military Cyber Affairs (27)
- Engineering Management & Systems Engineering Faculty Publications (23)
-
- Open Access Theses & Dissertations (11)
- Theses and Dissertations (9)
- McKelvey School of Engineering Graduate Student Theses & Dissertations (7)
- Doctoral Dissertations and Master's Theses (6)
- Electronic Theses, Projects, and Dissertations (6)
- Complex Systems Faculty Publications and Presentations (5)
- Legacy Theses & Dissertations (2009 - 2024) (5)
- Northeast Journal of Complex Systems (NEJCS) (5)
- Walden Dissertations and Doctoral Studies (5)
- African Conference on Information Systems and Technology (4)
- Doctoral Dissertations (4)
- VMASC Publications (4)
- All Dissertations (3)
- Discovery Day - Daytona Beach (3)
- Electrical & Computer Engineering Theses & Dissertations (3)
- Publications (3)
- Annual Symposium on Biomathematics and Ecology Education and Research (2)
- Archived Theses and Dissertations (2)
- Cal Poly Humboldt theses and projects (2)
- Chemical Technology, Control and Management (2)
- Cybersecurity Undergraduate Research Showcase (2)
- Department of Earth and Environmental Studies Faculty Scholarship and Creative Works (2)
- Electronic Theses & Dissertations (2024 - present) (2)
- Electronic Theses and Dissertations (2)
- Faculty Publications (2)
- Publication Type
- File Type
Articles 4051 - 4080 of 4223
Full-Text Articles in Systems Science
Review On Modeling And Simulation Of Cyberspace Operation, Guangya Si, Zhang Yang, Yanzheng Wang
Review On Modeling And Simulation Of Cyberspace Operation, Guangya Si, Zhang Yang, Yanzheng Wang
Journal of System Simulation
Abstract: Modeling and Simulation (M&S) is the effective and indispensable method to research cyberspace operation. On the view of joint operation level, the evolution feature of the cyberspace operation M&S is analyzed, which includes the constructions of the cyberspace weapons range, the cyberspace operation concept environment, and the cyberspace operation command information system. The progress of the cyberspace operation M&S is introdeced, including the networked information environment, the entity, the action and the effection. The new challenges of the cyberspace operation M&S are analyzed from the military angle and technology angle.
Dynamic Decision-Making Modeling For Army Operation Command Post Entity, Kang Kai, Yongliang Zhang, Chenxi Li, Jintang Pan
Dynamic Decision-Making Modeling For Army Operation Command Post Entity, Kang Kai, Yongliang Zhang, Chenxi Li, Jintang Pan
Journal of System Simulation
Abstract: The paper presents a modeling method of dynamic decision-making for army operation command post entity based on the Bayesian Net (BN) to meet the demands of demonstrating the operational blue print and evaluating the plan with the support of subject matter experts and military rules. The method brings about the structured description for the decision-making rules, builds the BN model for battlefield situation, and actualizes the situation estimation based on the model of BN reasoning. Therefore it gives the reasonable analysis, the in-depth understanding and right dynamic estimation to the land battlefield dynamic situation, which embodies the complexity and …
Multiple-Attribute Entity Recommendation Based On Classification, Meina Song, Xuejun Zhao, Haihong E
Multiple-Attribute Entity Recommendation Based On Classification, Meina Song, Xuejun Zhao, Haihong E
Journal of System Simulation
Abstract: In the process of exploring entity recommendation, the entity containing diverse attributes has gained more and more attention. Most of the current researchers mainly select one attribute, and embody it in the related algorithms and their extensions even though the entity is combined with multiple attributes in entity recommendation. In this paper, on the basis of the classification method, we delve into physical properties of the recommended entities, divide entity’s attribute information network into multiple sub ones. In sub information network, bounded by the amount of attributes, the single attribute and even multiple attributes can be diverted into diverse …
A Method Of 3d Scattering Center Extraction Based On Multiple Hrrp Series, Cui Shan, Li Sheng, Yan Hua
A Method Of 3d Scattering Center Extraction Based On Multiple Hrrp Series, Cui Shan, Li Sheng, Yan Hua
Journal of System Simulation
Abstract: Scattering center extraction is the key content in the research of radar target characteristics, particularly the sliding type of scattering center. An extraction method based on the parametric scattering center model is proposed, which takes advantage of Hough transformation to extract geometric location and sliding radius parameters. The distance is gotten in the line of radar sight, and the useful information is obtained from high-resolution range profile (HRRP) series, which estimates size parameter of scattering centers and accomplishes signal reconstruction. This method solves the problems of point and sliding scattering center extraction. Simulation example manifests the applicability of the …
Simulation Of Mosaic Picture Based On Compact Distribution Synthesis Of Element, Chen Jie, Yang Gang, Yang Meng
Simulation Of Mosaic Picture Based On Compact Distribution Synthesis Of Element, Chen Jie, Yang Gang, Yang Meng
Journal of System Simulation
Abstract: A new method that can rapidly synthesize the compact distribution of diverse types of elements is proposed to realize the simulation of mosaic. The Voronoi diagram is adoptedto segment the distribution region, and each part represents a space occupied by a graphic element to realize the compact distribution of graphic elements. In the process of generating Voronoi diagram, five different distance metrics are used to control the shape of the Voronoi polygon for achieving the compact distribution of the five different shapes. The method can generate graphic element distribution with scale and direction variations so as to simulate the …
Simulation Of Stone Cutting Process Based On Adaptive Coupling Method, Yongjun Tian, Guolin Duan, Junguang Kang, Jianhua Gang
Simulation Of Stone Cutting Process Based On Adaptive Coupling Method, Yongjun Tian, Guolin Duan, Junguang Kang, Jianhua Gang
Journal of System Simulation
Abstract: Aiming at complex nonlinear dynamic behaviors of stone-cutting process with circular saw and handling large mesh deformation instability in FEM, according to brittle material fracture mechanism, an adaptive coupling algorithm was established for calculating the cutting process of circular saw-stone materials system. The results show that the material removal process is a process of intermittent cycle; the cutting force is zero at the beginning of the process, and the force increases rapidly when the blade contacts with the stone, then decreases, eventually varies in a stable fluctuation. According to von-Mises stress distributions of saw blade and stone, the easily …
Fault Detection Based On Gpnmf For Industrial Process, Yuguang Niu, Shilin Wang, Zhongwei Lin, Xiaoming Li
Fault Detection Based On Gpnmf For Industrial Process, Yuguang Niu, Shilin Wang, Zhongwei Lin, Xiaoming Li
Journal of System Simulation
Abstract: As a newly dimension reduction technique, non-negative matrix factorization (NMF) has been applied in varying research areas. NMF methods require the original data non-negative. However, the operating data of industrial process maybe not satisfy this restriction. To resolve the problem, a new method is presented, which can be called as generalized projection non-negative matrix factorization (GPNMF). We use GPNMF to extract the latent variables that drive a process and to combine them with process monitoring techniques for fault detection. The corresponding contribution plots are defined for fault isolation. The proposed method is applied to a 1 000 MW unit …
Impact Of Rumor Spreading In A ‘Small World’ Social Network On Pricing Decision, Li Feng, Wei Ying
Impact Of Rumor Spreading In A ‘Small World’ Social Network On Pricing Decision, Li Feng, Wei Ying
Journal of System Simulation
Abstract: This paper adopts methodology of multi-agent based modeling to represent rumor spreading on small-world social network and to address impacts of rumor on pricing decision and profit of supplier. In the model, the process of rumor diffusion follows well-accepted ‘Susceptible-Infective-Removal’ (SIR) model. Simulation proved that mathematic analysis of SIR model overestimated the results of rumor diffusion while PageRank algorithm is a more ‘efficient’ method to choose the source node for rumor propagation according to all four proposed indicators. Sensitivity analysis of two parameters in SIR model, spreading rate and ignoring rate, indicates that the loss of profit will be …
Dynamic Suppression Method For Commutation Torque Ripple Of Brushless Dc Motors, Kun Xia, Tan Yuan, Bin Dong, Lu Jing
Dynamic Suppression Method For Commutation Torque Ripple Of Brushless Dc Motors, Kun Xia, Tan Yuan, Bin Dong, Lu Jing
Journal of System Simulation
Abstract: A dynamic suppression method for commutation torque ripple by employing a quasi-Z-source network was proposed, which reduced the torque ripple dynamically during the speed adjustment process in brushless DC motors (BLDCM). The phase resistance was taken into consideration and the mathematics model for the system was established. To suppress the commutation torque ripples timely and effectively, Uup and tup needed to be adjusted dynamically through the quasi-Z-source network while the speed and load changed. A simulation model to dynamically suppress the commutation torque ripple in BLDCM based on quasi-Z-source network was established by MATLAB/Simulink, and the feasibility …
Simulation Of Surge And Stall For Aero Engine Compressor Based On Entropy, Pi Jun, Yongchao Qiu, Zhiwei Hu, Wu Wei
Simulation Of Surge And Stall For Aero Engine Compressor Based On Entropy, Pi Jun, Yongchao Qiu, Zhiwei Hu, Wu Wei
Journal of System Simulation
Abstract: The mature model NASA Rotor37 is used to simulate the transition of the compressor’s operation from the steady state to the non-steady state of stall and surge using the simulation software CFX. The transition is analyzed and researched based on the theory of thermodynamics entropy and sample entropy to provide a basis for the fault diagnosis of stall and surge. The two thermodynamic entropy parameters of average specific entropy value and the isentropic efficiency are found by the analysis changing abnormally in the event of stall. The values of the sample entropy obtained by calculation using the static …
Simulation Of Migration Of Hexavalent Chromium In Groundwater, Liu Ling, Liping Xiao, Xilin Li
Simulation Of Migration Of Hexavalent Chromium In Groundwater, Liu Ling, Liping Xiao, Xilin Li
Journal of System Simulation
Abstract: Taking chromite ore processing residue site in Shenyang city of Liaoning province as a research object, the static adsorption experiment and the dynamic soil column experiment were carried out, and the adsorption characteristics and the migration law for hexavalent chromium of chromite ore processing residue leachate were analyzed in the groundwater system. A coupled dynamic mathematical model was developed for simulating hexavalent chromium migration in the groundwater system. Numerical simulation of hexavalent chromium migration in groundwater for 40 years before the anti-seepage measure and for 60 years after the anti-seepage measure was completed by using Visual Modflow software. The …
Adaptive Stochastic Resonance Weak Signal Detection, Hongyan Xing, Chunxia Lu, Zhang Qiang
Adaptive Stochastic Resonance Weak Signal Detection, Hongyan Xing, Chunxia Lu, Zhang Qiang
Journal of System Simulation
Abstract: As traditional stochastic resonance methodhas low accuracy problem for weak signal detection,a new adaptive stochastic resonanceweak signal detection method based on global artificial fish swarm algorithm (GAFSA) is proposed, in which the global artificial fish swarm algorithm is combined with stochastic resonance. The output signal-to-noise ratio gain of stochastic resonance system is used as fitness function of the global artificial fish swarm algorithm, and the weak signal detection problem is transformed into multi-parameter parallel optimization problem, which formsan adaptive system to detect weak feature signal. The simulation experiments and the comparisons of optimization results are carried …
Dynamic Response Analysis Of Brushless Doubly-Fed Induction Generator Under Grid Fault, Li Bing, Liu Shi, Long Teng, Qiwei Duan
Dynamic Response Analysis Of Brushless Doubly-Fed Induction Generator Under Grid Fault, Li Bing, Liu Shi, Long Teng, Qiwei Duan
Journal of System Simulation
Abstract: Brushless doubly-fed induction generator has good system reliability due to the cancellation of the brush and slip ringcompared with DFIG.The low voltage ride-through (LVRT) capability is the key to realize the uninterrupted operation for the wind power generation.In this paper, the LVRT issuefor different grid faults is studied. The dynamic responses of the change of power winding magnetic linkage and the change of control winding voltage are analyzed when grid fault occurswith symmetrical fault and unsymmetrical fault respectively based on mathematical model of BDFIG. Theinstantaneous voltages of control winding are calculated and the dynamic responsesare simulated under different …
Fault Diagnosis System Of Lithium Battery Based On Petri Net, Diju Gao, Lan Xi, Aidi Shen
Fault Diagnosis System Of Lithium Battery Based On Petri Net, Diju Gao, Lan Xi, Aidi Shen
Journal of System Simulation
Abstract: To improve the efficiency of lithium battery fault diagnosis system, a fault diagnosis system based on Petri net is proposed. The fault diagnosis model based on Petri net came from the analysis of the inconsistent voltages between single cell in lithium batteries during charge and discharge. The system can find the fault causes according to abnormal signals detected by sensor. The control logic diagram of the fault diagnosis model is established by state flow, and simulated by simulink. The results of model verification and simulation show that the cause for inconsistent voltage is distinguished meticulously by the fault diagnosis …
Optimal Economic Dispatch Of Microgrid Based On Immune Particle Swarm Optimization Algorithm, Gao Cong, Dinghui Wu, Tinglong Pan, Zhicheng Ji
Optimal Economic Dispatch Of Microgrid Based On Immune Particle Swarm Optimization Algorithm, Gao Cong, Dinghui Wu, Tinglong Pan, Zhicheng Ji
Journal of System Simulation
Abstract: Some restrictions are accompanied when solving the optimal economic dispatch of microgrid, such as multi-constraints, discontinuities and multi-generators. An immune particle swarm optimization (IMPSO) algorithm is proposed, which introduces the artificial immune system into particle swarm optimization (PSO) algorithm and can ensure the PSO convergence as well as exerting the immune mechanism to make the particles uniformly distributed in solution plane. The algorithm possesses the virtues like global probe and robustness and is used to solve two operating modes of island and grid- connected in microgrid respectively. The experimental results show that the IMPSO provides a feasible and advanced …
Linear Design And Simulation Analysis For Harmonic-Distance Rubber Bushing Of Pdm, Tong Hua, Guoyin Chen, Xiaohua Zhu
Linear Design And Simulation Analysis For Harmonic-Distance Rubber Bushing Of Pdm, Tong Hua, Guoyin Chen, Xiaohua Zhu
Journal of System Simulation
Abstract: For the problem of fatigue failure in stator rubber bushing of PDM, which reduces motor efficiency and restricts the rate of penetration, a numerical model of PDM’s stator-rotor is established. The thermal coupling problem of rubber bushing working in a well is analyzed. The displacement, temperature and stress distribution of rubber bushing under different conditions and interferences are calculated. A new harmonic-distance rubber bushing was designed based on the structure of rubber bushing, and a finite element simulation on it is taken. The research indicates that the harmonic-distance rubber bushing not only has the advantage of equal-distance rubber bushing, …
Modeling And Control Of Networked Control Systems With Partitioned Random Delay, Yicai Liu, Bin Liu, Anwei Shi
Modeling And Control Of Networked Control Systems With Partitioned Random Delay, Yicai Liu, Bin Liu, Anwei Shi
Journal of System Simulation
Abstract: As for a class of networked control systems which have the bilateral random delay of sensor-to- controller and controller-to-actuator, the networked control systems were modeled as discrete-time jump systems with uncertain parameters by firstly partitioning the maximum possible delay value into a plurality of equal intervals, and then describing it as a stochastic process of a finite state Markov chain according to the jump characteristics of the delay in each interval. Considering the condition that the elements of the transition probability matrix of the Markov chain were partly unknown, the time-varying controller meeting the requirement of system stability was …
Simulation Research On Generator Sets Of Offshore Drilling Platform, Weiyi Wang, Xiao Lei, Dejun Lin
Simulation Research On Generator Sets Of Offshore Drilling Platform, Weiyi Wang, Xiao Lei, Dejun Lin
Journal of System Simulation
Abstract: Due to the poor working environment, the complex running conditions and the variety of facilities on offshore drilling platform, the entity experimental research on power system becomes hard and expensive. Based on the background of the offshore drilling platform, the model of eight generator sets is implemented. The simulations of generator sets interconnecting, operation with large load, as well as electric power system’s fault are done. The dynamic processes of each generator sets’ terminal voltage, speed and output power and power grid voltage are shown, which have a certain reference value for the parameter settings and the selection of …
Disturbance Rejection Based Robust Control Approach For Servo System With Backlash, Chongwei Han, Peng Chao, Zhixiang Shi, Li Zhong
Disturbance Rejection Based Robust Control Approach For Servo System With Backlash, Chongwei Han, Peng Chao, Zhixiang Shi, Li Zhong
Journal of System Simulation
Abstract: With the rapid development of industry and science technology, the control performance requirements for servo system become higher and higher. Aiming at the servo system with backlash, a disturbance rejection based robust control approach is studied, which sees the backlash as external disturbance. It utilizes a disturbance rejection compensator to reduce the adverse effects caused by backlash, a mixed sensitivity based robust feedback controller to enhance the tracking control precision and robustness. The model of the servo system with backlash is built based on the analysis of system structure and work principle. The control principle, the robust disturbance rejection …
Optimization Of Scheduling Rule Of Unidirectional Material Handling System With Short-Cut, Juntao Li, Kun Xia, Kise Hiroshi
Optimization Of Scheduling Rule Of Unidirectional Material Handling System With Short-Cut, Juntao Li, Kun Xia, Kise Hiroshi
Journal of System Simulation
Abstract: To decrease the interference and improve the performance of a unidirectional circulation-type material handling system on a single loop with a shortcut, the interference and scheduling problem between AGVs are studied. According to the actual situation of material handling system, the interferences of two scheduling rules (random rule and order rule) are analyzed. An optimal scheduling rule under the interference case—exchange order rule is proposed. Different scheduling rules have an influence on the interference between AGVs and then have an important effect on the efficiency of the whole system. Experiment results show that the exchange order (E-Order) rule …
Information Density Based Bayes Algorithm For Cloud Platform Intrusion Detection, Du Ye, Tiantian Zhang, Meihong Li
Information Density Based Bayes Algorithm For Cloud Platform Intrusion Detection, Du Ye, Tiantian Zhang, Meihong Li
Journal of System Simulation
Abstract: For getting better data classification results of cloud platform intrusion detection, and improving the detection accuracy and performance, a Bayes algorithm based on information density was proposed. The complete probability of data characteristics was constructed, and the uncertainty of information was represented by information entropy. The information density was defined to describe the distribution of information uncertainty. The improved algorithm was introduced, and the convergence and time complexity were analyzed. The simulation experiment results show that the method can effectively reduce the data loss and exposethe relationship between data characteristics and data type, which can further classify the detection …
Spectralwidth Selection And Detectability Analysis Ofstarlight Refraction Sensor, Xianzhong Wang, Liu Yu, Minlan Tang, Limin Zhang
Spectralwidth Selection And Detectability Analysis Ofstarlight Refraction Sensor, Xianzhong Wang, Liu Yu, Minlan Tang, Limin Zhang
Journal of System Simulation
Abstract: Aiming at the engineering problem of starlight refraction sensor’s ability fordetecting the starlight refracted in atmosphere, the atmospheric attenuation coefficient of the visible and near infrared stellar dueto dispersion, molecular scattering, ozone absorption and so on are analyzed, which determines starlight refraction sensor’s spectral width and the visual magnitude difference equivalent with narrow spectral detection.The starlight refraction sensor’s detection ability and detection probability are estimatedbased on signal to noise ratio calculation and SNRanalysis. The simulation results give the visual magnitude difference equivalent with the atmospheric attenuation to the different atmospheric altitude, and the limiting magnitude of the different temperature …
Optimum Design Of Remote Delivery Capsule’S Driving Mechanism Based On Electromagnetic-Permanent Magnet, Zhengping Lu, Xudong Guo, Tangcheng Xu, Ruihua Qin
Optimum Design Of Remote Delivery Capsule’S Driving Mechanism Based On Electromagnetic-Permanent Magnet, Zhengping Lu, Xudong Guo, Tangcheng Xu, Ruihua Qin
Journal of System Simulation
Abstract: To achieve fast, reliable and controllable drug delivery in the gastrointestinal lesions, a suitable delivery driving mechanism was studied. The structure of the driving mechanism was designedto overcome the magnetic force decaying rapidly with distance, whichcan satisfy the demands of the drug delivery for the large dose and long driving stroke.By combining the orthogonal test theory and the finite element simulation, the magnetic driving forcehas been calculatedforthe parameters of the electromagnetic coil and permanent magnet in different combinations of the values. The structure parameters of the electromagnetic coil and the permanent magnethave been optimizedto achieve the …
A Model For Battlefield Situation Change Rate Prediction Based On Deep Learning, Jiuyang Tao, Wu Lin, Wang Chi, Junda Chu, Liao Ying, Zhu Feng
A Model For Battlefield Situation Change Rate Prediction Based On Deep Learning, Jiuyang Tao, Wu Lin, Wang Chi, Junda Chu, Liao Ying, Zhu Feng
Journal of System Simulation
Abstract: To measure and estimate the uncertainty of the battlefield situation is of great significance for the commanders to plan the reconnaissance mission and reduce the risk of decision-making. Based on Shannon's information theory, firstly, methods and a model on measurement of situation change rate are proposed. Secondly, a scene with two-dimensional grid elements maneuvering is established, based on deep learning, the prediction method for maneuvering trend is explored. It is proved that cross entropy is equivalent to situation change rate. Finally, with the increase of the objective uncertainty, situation change rate and the accuracy of the forecast is …
Achievements And Developments Of Hysteresis And Creep Of Pneumatic Artificial Muscles, Shenglong Xie, Haitao Liu, Jiangping Mei
Achievements And Developments Of Hysteresis And Creep Of Pneumatic Artificial Muscles, Shenglong Xie, Haitao Liu, Jiangping Mei
Journal of System Simulation
Abstract: Regarding to the problems of hysteresis and creep, the developments and achievements of the research on pneumatic artificial muscles at home and abroad are systemically reviewed. The state of the art is summarized in terms of characteristics, reasons causing, modeling and control strategies based on the hysteresis and creep modeling. The problems in recent research are analyzed and the direction for further research is put forward. The theoretical study on hysteresis and creep of pneumatic artificial muscle is limited. The hysteresis modeling needs to consider the time-varied parameters caused by creep. Neural network modeling needs to solve …
Association Rules Analysis Method Of Spatial Data Under Mapreduce Framework, Mingzhi Zhang, Li Yi
Association Rules Analysis Method Of Spatial Data Under Mapreduce Framework, Mingzhi Zhang, Li Yi
Journal of System Simulation
Abstract: Spatial data has the characteristic of extensity, timeliness, multidimensional, large amount of data and complex relations. Some non-conventional data screening tool for analysis and mining is required to find out the patterns, rules and characteristics knowledge in the spatial big data for battlefield situation awareness and battle space management. In view that the existing Apriori algorithm scans the database too frequently, the Apriori algorithm is improved on the basis of working principle of Map Reduce .The fast analysis ideas and technologyframework of spatial data is proposed. An elementary validate prototype is built for the key technology experimentation.Experimental results …
Modeling Of Nonlinear Industrial System At All Operating Conditions Based On State Tracking, Dong Ze, Erxin Yin
Modeling Of Nonlinear Industrial System At All Operating Conditions Based On State Tracking, Dong Ze, Erxin Yin
Journal of System Simulation
Abstract: From the prospective of industrial big data modeling, this paper presents a modeling method for nonlinear industrial system at all operating conditions based on state tracking. In view of large amount of historical data and the difficulty to screen the modeling data, a sliding window is designed to screen steady-state data. The fast calculation method for the standard deviation is deducted. The influence mechanism of unknown disturbance on the system is analyzed. The data segment, representing the system from dynamic state to stable state, is selected as the modeling data. A data-driven modeling algorithm, which can effectively eliminate the …
Airport Surface Traffic Simulation Based On Agent-Cellular Automaton, Zhiwei Xing, Shijiao Li, Yunxiao Tang, Luo Qian
Airport Surface Traffic Simulation Based On Agent-Cellular Automaton, Zhiwei Xing, Shijiao Li, Yunxiao Tang, Luo Qian
Journal of System Simulation
Abstract: In order to analyze the traffic situation of airport surface, an airport surface traffic simulation method is proposed based on the theory of agent and cellular automaton model. The traffic characteristics of airport surface are analyzed. The combination of agent theory and the cellular automaton model is discussed. Different parts of the airport surface traffic are defined respectively as one-dimensional cellular automaton, and aircraft agent is designed, which means that a traffic simulation model is constructed based on agent-cellular automaton. The airport surface traffic is simulated. Simulation results show that the simulation method has the characteristics of simple, high …
Dynamics Of Microbubble Confined In Concave Wall In Ultrasound Filed, Jiwen Hu, Jiana Sun
Dynamics Of Microbubble Confined In Concave Wall In Ultrasound Filed, Jiwen Hu, Jiana Sun
Journal of System Simulation
Abstract: The interactions between an ultrasound contrast agent (UCA) microbubble and a concave surface can be applied to understanding of the response of the UCA near blood vessel wall in ultrasound field. A dynamics model of microbubble near a concave wall is presented by a virtual image method and the acoustic reflection effects of the surface. The dynamic behavior of the microbubble is analyzed by numerical calculation. The results show that the microbubble vibration is suppressed near the wall. Inhibitory effects to microbubble vibration near rigid wall are stronger than that of near elastic wall. The microbubble vibration is easier …
Research And Implementation Of 3d Emergency Drilling System Of Oil Spill At Sea, Changjun Zou, Yin Yong, Xiuwen Liu, Haijiang Li
Research And Implementation Of 3d Emergency Drilling System Of Oil Spill At Sea, Changjun Zou, Yin Yong, Xiuwen Liu, Haijiang Li
Journal of System Simulation
Abstract: In view of the high cost, constraint to time and space, harmfulness to the environmental as well as insufficient training in extreme weather condition in current oil spill emergency drilling system, a 3D emergency drilling system of oil spill based on virtual reality is presented and implemented. The classical oil spill model is adopted to establish an oil boom driven model based on mass-spring system. Interactive operation between oil boom and oil film based on polygon clipping is realized. The system runs stably and smoothly in the system test, which fully proves the correctness and reliability of the system …