Design And Implementation Of Quantum-Inspired Bee Colony Algorithm,
2020
1. Admission and Employment office, Northeast Petroleum University, Daqing 163318, China; ;
Design And Implementation Of Quantum-Inspired Bee Colony Algorithm, Shuyun Yang, Panchi Li
Journal of System Simulation
Abstract: To enhance the performance of artificial bee colony algorithm, a quantum-inspired bee colony algorithm was proposed. In the proposed approach, the bees were encoded with the qubits described on the Bloch sphere. The evolutionary search was achieved by rotating the qubit about the rotation axis on the Bloch sphere. The Bloch coordinates of qubit can be obtained by measuring with the Pauli matrices, and the optimization solutions can be presented through the solution space transformation. The highlight advantages of this method are the ability to simultaneously adjust two parameters of a qubit and automatically achieve the best match between …
Finite Element Simulation Of Machining 7075 Aluminum Alloy Based On Advantedge And Corresponding Experimental Study,
2020
1. Department of Mechanical and Automotive Engineering, Chuzho Vocational and Technology College, Chuzhou 239000, China; ;
Finite Element Simulation Of Machining 7075 Aluminum Alloy Based On Advantedge And Corresponding Experimental Study, Yusong Liao, Han Jiang
Journal of System Simulation
Abstract: Abstract: The finite element simulation of cutting 7050 aluminum alloy was carried out based on the software of AdvantEdge, and Johnson-Cook constitutive model was chosen for the workpiece material in the model. The parameters for the constitutive model were obtained through the Hopkinson experiment. The cutting forces and surface qualities were observed through different cutting velocities and cutting depths. The cutting velocity and cutting depth were optimized, and the experiment was carried out with the guidance of the simulation results. The machined workpiece obtained from the experiment shows that the optimized cutting parameters can improve the machined surface property …
Chaos Analysis For Tcp Congestion Control In Heterogeneous Networks,
2020
1. Information Engineering College of HAUST, Luoyang 471003, China; ;
Chaos Analysis For Tcp Congestion Control In Heterogeneous Networks, Xuhui Wei, Wang Hui
Journal of System Simulation
Abstract: In order to study the chaos nature of TCP in Heterogeneous Network, the major features were demonstrated such as periodicity, sensitivity to initial conditions (butterfly effect), and strange attractor of chaotic system by analyzing parameters in Heterogeneous Network proving that TCP shows chaos nature in Heterogeneous Network in certain situations. Numerical examples show that in the case of system with low bottleneck link, the system shows fine periodic and stable behavior, and there is no TCP deadlock phenomenon in the heterogeneous network system. In the case of system with larger bottleneck link, the system shows chaotic. And a …
Sliding Parameters Calculation Of Agricultural Tracked Robot Based On Ukf And Smo,
2020
College of Information and Computer, Anhui Agricultural University, Hefei 230036, China;
Sliding Parameters Calculation Of Agricultural Tracked Robot Based On Ukf And Smo, Jiao Jun, Kong Wen, Lichuan Gu, Wang Qiang, Ya Gao, Chenchen Yuan
Journal of System Simulation
Abstract: In order to make ensure an Agricultural Tracked Robot (ATR) stable driving in farmland and reduce the slip phenomenon parameters, a novel sliding parameters estimation scheme of ATR based on UKF (Unscented Kalman Filter) and SMO (Sliding Mode Observer) was proposed. The motion equation and measurement equation of ATR were fused by UKF to compensate the measurement error from sensors and to reconstruct the precision pose parameters of ATR. Three slip parameter observers were designed for the sideslip angle, left and right track slip rate, which used the tangent function was used as the switching function to cover chattering …
Study On Operation Mechanism Of Mixed Closed Loop Transportation Network With Exponential Queues,
2020
1. School of Management Engineering, Zhengzhou University, Zhengzhou 450001, China; ;
Study On Operation Mechanism Of Mixed Closed Loop Transportation Network With Exponential Queues, Li Bing, Xuan Hua, Li Jing
Journal of System Simulation
Abstract: Mixed transport queuing network is composed of single route station road and multiple route station as parallel and series form. Two random variables to denote respectively time interval of vehicle arriving freight station and the service time of these handling platforms in freight station obeyed negative exponential distribution. The closed mixed transportation queuing network was simulated using SimEvents module in Matlab software. The dynamic changes of the queue length and waiting time in freight station were analyzed. Then vehicle distribution in mixed closed loop transportation network was analyzed. The formulation to compute vehicle distribution probability in steady state was …
Simulation Of Converter Torsional Vibration Based On Multi-Body Dynamics,
2020
Henan University of Science and Technology, Luoyang 471003 China;
Simulation Of Converter Torsional Vibration Based On Multi-Body Dynamics, Hongbin Liu, Yongsheng Shi, Zhang Lei, Hongbiao Han
Journal of System Simulation
Abstract: Torsional vibration of large converter is very easy to cause the transmission gear failure. In order to solve large converters' torsional vibration during working, a converter multi-body dynamic analysis model on rigid-flexible coupling method was built by using of multi-body dynamics simulation software RecurDyn and the finite element analysis software ANSYS. And the dynamic simulation study of this model was carried out. The effects of torsional vibration by different parking methods, parking times, the converters' vibration frequency and the amplitude were obtained through the dynamics simulation calculation. The results show that the torsional vibration amplitude of converter can …
Study On Theory Of Scale Model Simulation Of Light Wave-Microwave System On Inequality Electrical Length Conditions,
2020
Information and navigation institute, AFEU, Xi'an 710077, China;
Study On Theory Of Scale Model Simulation Of Light Wave-Microwave System On Inequality Electrical Length Conditions, He Jing, Miao Qiang, Qifan Zhao
Journal of System Simulation
Abstract: Light wave model measurement microwave system at big scale factor on inequality electrical length conditions was proposed. The analysis idea of such model measurement was put forward. The feasibility of simulating electromagnetic scattering at microwave band using optic wave was discussed from the angle of physical similitude and technological feasibility. Then according to this idea, the similitude relationship and conditions in the application such as RCS measurement and multipath effect measurement were analyzed in detail on inequality electrical length conditions model measurement. The research result offers a new research approach in the field of large scale electromagnetic system simulation.
Research On Fault Diagnosis For Pitch Sensors Of Wind Turbines,
2020
Key Laboratory of Advanced Process Control for Light Industry, Jiangnan University, Wuxi 214122, China;
Research On Fault Diagnosis For Pitch Sensors Of Wind Turbines, Yanjie Zhai, Dinghui Wu, Yiyang Li, Zhicheng Ji
Journal of System Simulation
Abstract: Considering the biased output fault of pitch sensors for wind turbines, a fault diagnosis method based on the multi-innovation kalman filter algorithm was proposed. The corresponding relationship between the change of the pitch angle and the tiny displacement produced by the force acting on the tower was established according to the mechanical structure characteristics of wind turbines. More accurate estimated value for the tiny displacement was achieved by using the multi-innovation kalman filter algorithm which had higher convergence speed and estimation accuracy to reduce the large noise of the output information generated by sensors. The fault could be detected …
Dynamic Simulation And Test Of Mountain Orchard Double-Track Transport Traction System,
2020
1. Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education,South China Agricultural University, Guangzhou 510642, China; ;2. Division of Citrus Machinery, China Agriculture Research System, Guangzhou 510642, China; ;3. College of Engineering, South China Agricultural University, Guangzhou 510642, China;
Dynamic Simulation And Test Of Mountain Orchard Double-Track Transport Traction System, Yuping Ouyang, Tiansheng Hong, Yudong Ma
Journal of System Simulation
Abstract: After the traction system virtual prototype model of mountain orchard transport was established, virtual simulation test was done to get the force of wire rope and the dynamic characteristics. Compared with trapezoidal velocity, under S type velocity curve, vehicle vibration amplitude was decreased obviously in each stage, average maximum force and average force of four key points was respectively decreased by 9.2% and 12.7%. Average relative error between kinetic parameters calculation and simulation values was 4.8%. Average relative error between test and simulation values was 4.02 %. This research results have provided a simulation platform and reference to whole …
Improved Crack Removing Algorithm For Quad-Tree Terrain Rendering,
2020
1. Aeronautics and Astronautics Engineering College, Air Force Engineering University, Xi'an 710038, China; ;
Improved Crack Removing Algorithm For Quad-Tree Terrain Rendering, Wan Ming, Liang Xia, Fengming Zhang
Journal of System Simulation
Abstract: In 3D large scale multi-resolution terrain rendering, an improved algorithm based on LOD control and visibility for crack removing was proposed. It is proved that quad-tree grid is restricted while the ratio of visible distance to grid extent is large than 3. In preprocess stage, cracks were classified to raise crack and dropped crack, and crack patches with the same size as cracks were generated and attached to the latter. In real-time rendering stage, no special calculation by CPU for restriction of level of detail or for crack removing between adjacent grids was needed. Example shows that …
Design And Motion Control Of Four-Wheel Automotive Chassis Inspection Robot,
2020
1. Faculty of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China; ;
Design And Motion Control Of Four-Wheel Automotive Chassis Inspection Robot, Jue Zhu, Yongbin Huang, Zhang He
Journal of System Simulation
Abstract: The system structure of an automobile chassis inspection robot was introduced. Furthermore the equation of motion state of robot was established and a decoupling controller was designed. The robot with omnidirectional wheel moving mechanism achieved the chassis image acquisition with wireless camera system and employed the active disturbance rejection controller for motion control. The robot has the characters of wide applicability, flexibility of platform movement, the stability of motion state, which can effectively compensate for the lack of traditional inspection methods, and a reasonable design in automobile chassis inspection is proved. The motion equation of state established for omnidirectional …
Situation Assessment Method For Cooperative Air Combat Based On Dynamic Combat Power Field,
2020
1. Aeronautics and Astronautics Engineering College, Air Force Engineering University, Xi'an 710038, China; ;2. College of Electronic Communication, Northwestern Polytechnical University, Xi'an 710072, China; ;
Situation Assessment Method For Cooperative Air Combat Based On Dynamic Combat Power Field, Zhanwu Li, Yizhe Chang, Haiyan Yang, Yingxin Kou, Xu An
Journal of System Simulation
Abstract: Considering on the remaining problem in current situation assessment of Beyond-Visual-Range cooperative air combat, such as isolation of static/dynamic state superiority, the concept of combat power field was applied in situation assessment of Beyond-Visual-Range cooperative air combat. Coupled with characteristics of cooperative air combat, the model of combat power field was constructed by aspects of attack, communication, detection, maneuverability, electronic countermeasure and cooperation and alert. The method was verified by the simulation. The result shows the method has advantages of integrity, visualization and continuity compared with former situation assessment methods, and is also able to improve the quality and …
Experiment Platform For Pure Electric Vehicles And Bi-Directional Power Conversion,
2020
School of Electrical Engineering,Guangxi University, Nanning 530004;
Experiment Platform For Pure Electric Vehicles And Bi-Directional Power Conversion, Shaojian Song, Qingfang Lin, Xiaofeng Lin
Journal of System Simulation
Abstract: As the energy consumption and environmental pollution brought by traditional internal combustion engine vehicles, the experimental platform for pure electric vehicle research is scarce, and most of the research uses virtual vehicle simulation software, which is difficult to accurately reflect the real vehicle system. An experiment platform for LiFePO4 Battery pack (the main energy source) and ultra-capacitor (the auxiliary energy source) hybrid pure electric vehicles and bi-directional power conversion was introduced. The test results show that the introduced experimental platform can be performance test for the key components of pure electric vehicle and energy management, running under …
Simulation Research On Cantilever Piezoelectric Generator With Mass,
2020
1. Mechanic & Electronic College, Agricultural University of Hebei, Baoding 071001, China; ;
Simulation Research On Cantilever Piezoelectric Generator With Mass, Yan Zhen, He Qing, Dongping Wang
Journal of System Simulation
Abstract: Piezoelectric vibration generator made in MEMS can supply infinitely and continuously energy for low power electronic devices. In order to improve the adaptive capacity to environment of cantilever piezoelectric vibration generator, through the finite element simulation and experimental study, effect law of additional mass on the natural frequencies and output voltage was analyzed. Results show that, as the mass increases, natural frequency of the piezoelectric beam decreases monotonically, while relative displacement of the end monotonically increases; in the same incentive environment, output voltage of piezoelectric beam with close to the natural frequency and same to the end amplitude are …
Review On Modeling And Simulation Of Critical Infrastructures,
2020
1. The Department of Information Operation & Command Training, NDU of PLA, Beijing 100091, China; ;2. Langfang Campus of Nangjing Artillery Academy, Langfang 065000, China;
Review On Modeling And Simulation Of Critical Infrastructures, Baoliang Xiao, Mingzhi Zhang, Xiaoyuan He
Journal of System Simulation
Abstract: Economic prosperity, national security and society well-being have long depended on the important services that some critical infrastructures are provided. The safety of the critical infrastructures is vital for the normal operation of the country. On the basis of research on the connotation of critical infrastructure to different nation in different historical period, the definition, classification and model of interdependencies among critical infrastructures were analyzed. The principal modeling and simulation techniques of critical infrastructure and their merits and drawbacks were summarized. The significant protection projection s and tools were analyzed and researched. Depending on all above studies, knowing …
Fire Reconstruction Method Based On Les And Linear Programming,
2020
1. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; ;2. State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, China; ;
Fire Reconstruction Method Based On Les And Linear Programming, Guangyao Yao, Peizhong Yang, Tan Xun
Journal of System Simulation
Abstract: A method based on LES and linear programming was proposed for the numerical construction of fire accident. In the simulation with LES method, all the quantities were decomposed into large-scale components and small-scale components. For large-scale components, the direct simulation method was used. For small-scale components, the subgrid model was used. The LES method could improve the simulation accuracy. In the linear programming method, the parameters were locally linearized to solve the optimization problem. It could improve the simulation efficiency. The method was applied to the numerical reconstruction of a wholesale market fire in Shanghai. The spread of fire …
Compressed-Sensing Based Up-Sampling Method For Fluid Simulation,
2020
School of Software, Shanghai Jiao Tong University, Shanghai 200240, China;
Compressed-Sensing Based Up-Sampling Method For Fluid Simulation, Yijing Qian, Xubo Yang
Journal of System Simulation
Abstract: In computer fluid animation, the grid-based Euler method is a well-matured and effective way of simulating fluids, but a key bottleneck of Euler method is that it is limited to the traditional Nyquist-Shannon sampling theorem in sampling step. So it cannot effectively reduce the massive data and computing of the large-scale flow fields. In order to solve this problem, compressed sensing theory was used to probe a way to break through the limitation of the sampling theorem in fluid simulation. The sparsity and compressibility of fluid data were explored, then applicable sampling function, compressive basis and reconstruction algorithm for …
Modeling Research On Dynamic Pressure Distribution Of Pilot Body In Maneuver Flight,
2020
Department of Automobile and Mechanical Engineering, Changchun University of Science and Technology, Changchun 130600, China;
Modeling Research On Dynamic Pressure Distribution Of Pilot Body In Maneuver Flight, Liu Gang, Yunpu Wang, Hongwei Chi, Hongyin Yuan
Journal of System Simulation
Abstract: Relationship between dynamic surface forces distribution of pilot body and flight load in maneuver flight was studied. Dynamic surface pressure and shear distribution of pilot body seated posture were expressed by setting up dynamic pressure factor and dynamic shear factor. Flight kinetic equations of pilot body seated posture were established. In the equations, relationship between pilot body inertia forces and dynamic surface forces were given, and the equations are square nonlinear for dynamic pressure factor and shear factor. Finally an example for climbing turn maneuver flight of some aircraft was done, dynamic surface forces distribution of pilot …
Numerical Simulation Of Hot And Cold Fluids Mixing In A Tee-Junction,
2020
Institute of Hydraulic Engineering, Xian University of Technology, Xi'an 710048, China;
Numerical Simulation Of Hot And Cold Fluids Mixing In A Tee-Junction, Wenli Wei, Yunfei Hong, Shipeng Shao, Yuling Liu
Journal of System Simulation
Abstract: Flow and heat transfer model in tee junction was established and the 3D RNG k-ε turbulence model was completed to simulate the process of mixing and capture the information of velocity and temperature. The simulation results and measured data of the mean value of velocity and temperature were analyzed and compared, and are in a good agreement, which indicates that the RNG k-ε model combined with the heat transfer model can well simulate the hydraulic characteristics and heat transfer mechanism of hot and cold fluids in a tee junction. Furthermore, the upstream segment of a tee junction has two …
Research On Methods For Transformation Of Declarative Model For Semi-Physical Simulation,
2020
1. National CAD Support Software Engineering Research Center, HUST, Wuhan 430074, China; ;
Research On Methods For Transformation Of Declarative Model For Semi-Physical Simulation, Weijian Huang, Jianwan Ding, Liping Chen, Zhaoyuan Zhou
Journal of System Simulation
Abstract: A new method for the transformation from the declarative model to the model for semi-physical simulation was proposed aiming at semi-physical simulation. By analyzing the mathematical form of the declarative model and the model for semi-physical simulation, based on bipartite graph, the mathematical form of declarative model to the mathematical form of the model for semi-physical simulation was transformed through decomposition based on bipartite graph and tearing the algebraic loop, using clutch model as the model transformation examples. The declarative model transforming idea has overcome the disadvantages of process modeling method such as considering the causality, difficult …
