Research Of Constant Pressure Delivery Pid Control System Of Flying Ashes,
2020
School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China;
Research Of Constant Pressure Delivery Pid Control System Of Flying Ashes, Yanjun Xiao, Yingpei Sun, Xianle Meng, Yongcong Li
Journal of System Simulation
Abstract: Comparing to the drawbacks of fly ash constant current conveying system, the advantages of constant pressure delivery system and its conveying theory were introduced. A scientific modeling of the key of PID controller was established. By introducing the fuzzy control algorithm, the fly ash constant pressure conveying fuzzy adaptive PID controller was designed, which could make the auto changes between the fuzzy control and PID controller come true, and the simulation with MATLAB was researched. The results show that fuzzy adaptive PID controller is superior to the conventional PID controller in overshoot, response speed and adjusting time. And fuzzy …
Methodology Research For Health Condition Assessment Of Power Supply Based On Simulation,
2020
Department of Electrical Engineering & Automation, Harbin Institute of Technology, Harbin 150001, China;
Methodology Research For Health Condition Assessment Of Power Supply Based On Simulation, Xuerong Ye, Chen Cen, Yixing Wang, Guofu Zhai
Journal of System Simulation
Abstract: Currently, the prognostics and health management research of switch mode power supply (SMPS) are mostly based on the field data with specified stress profile, which can hardly be adapted to the application in other stress condition. A methodology research for health condition assessment of power supply based on simulation was proposed. The highly precise model was created for the injection of the quantitative degradation parameters of components. The database containing degradation characteristics of power supply was created by using design of experiment. The functions between stress factors and system outputs were confirmed based on least square method. Thus the …
Research On Engineering Application Of Atmospheric Environment Simulation,
2020
Beijing Institute of Applied Meteorology, Beijing 100029, China;
Research On Engineering Application Of Atmospheric Environment Simulation, Cai Jun, Liren Xu, Xiaoying Shen
Journal of System Simulation
Abstract: With the evolution of system simulation, the atmospheric environment simulation technology has developed to come into being an important key common technology, and is rapidly developed towards the larger and more complex tendency. According to the requirement of the engineering application to atmospheric environment simulation, the flow of atmospheric environment simulation application was designed. Some key questions, such as, the representation of atmospheric environment simulation, the verification and validation of environment simulation, the application interface of engineering application, atmospheric environment federation during the application process of atmospheric environment simulation were discussed. The research presents an …
Study On Hwil Simulation Of Compound Guidance System Based On Radar Signal Injected,
2020
Shanghai Electro-Mechanical Engineering Institute, Shanghai 201109, China;
Study On Hwil Simulation Of Compound Guidance System Based On Radar Signal Injected, Lai Peng, Zhifeng Lu
Journal of System Simulation
Abstract: The hardware-in-the-loop simulation plays a very important role in the research and design process of missile weapons. The architecture of the hardware-in-the-loop simulation system for RF/IR compound guidance was introduced. The model of the passive-wave radar signal based on phase interferometry and the realizing schemes were researched. The hardware-in-the-loop simulation system, which simulated passive-wave radar by signal injection method, was proposed. Experiment results show that the algorithm design of RF/ IR compound Guidance can be tested with the effective support of this system.
Analysis Of Floating Memcapacitor Emulator And Its Application In Filter Circuits,
2020
1. Nanshan College, Yantai 265713, China;;
Analysis Of Floating Memcapacitor Emulator And Its Application In Filter Circuits, Guisan Li, Dongsheng Yu
Journal of System Simulation
Abstract: A new equivalent circuit for emulating floating memcapacitor based on active analog chips was designed. By taking square and sinusoidal voltage waveforms as excitation signals, respectively, the frequency-dependence of pinched hysteresis loops of the memcapacitor emulator was tested. In consideration of the controllable memcapacitance, memcapacitor was utilized to structure filers in order to obtain tunable cutoff frequency. Based on PSPICE software, circuit and macro models were used to construct π filter circuits, respectively. Voltage signal containing low and high frequency components were used to test the low pass filtering ability of this circuit. The behaviors of filtered …
Research On Real-Time Simulation And Simulation Algorithm Optimization Of Igbt’S Switching Characteristics Based On Fpga,
2020
1. Department of Automation, North China Electric Power University, Baoding 071003, China;;2. Research Institute of Simulation and Control, North China Electric Power University, Baoding 071051, China;
Research On Real-Time Simulation And Simulation Algorithm Optimization Of Igbt’S Switching Characteristics Based On Fpga, Zhaoyan Zhang, Bingshu Wang, Xingwu Wang
Journal of System Simulation
Abstract: The model of IGBT switching transient characteristics was established in accordance with IGBT characteristics. The rule of electromagnetic changes in the IGBT switching process was accurately described. The IGBT model was higher precision. Combined with the requirements of real-time simulation, the method of Model optimization which was Single-cycle delay method and function lookup table method was proposed, giving specific implementation method of optimized algorithms on FPGA. The platform of real-time simulation circuit with FPGA as the core was built. The simulation data was consistent with the actual test data. FPGA-based real-time simulation of IGBT switching characteristics solved the …
Study On Combat Effectiveness Prediction Model Using Elman Feedback Network,
2020
1. Department of Graduate Management, Equipment Academy, Beijing 101416, China;;
Study On Combat Effectiveness Prediction Model Using Elman Feedback Network, Xiaoxi Li, Haoguang Chen, Daxi Li, Jiangping Chen
Journal of System Simulation
Abstract: To deal with combat effectiveness prediction of the military system, a SVR-based crucial evaluation indexes mining method was carefully investigated. The key indexes in the effectiveness evaluation were found by comparing partial derivatives. The model of efficiency prediction based on Elman neural networks, which used effective optimized indexs and values as input and output, was exerted to combat effectiveness prediction of C4ISR. The results show that the method can reduce the complexity of prediction model, and avoid uncertain factors existing in system, which provide effective technical support for the combat effectiveness prediction scientifically.
Research On Modeling Of Weapons System Of Systems Evaluation,
2020
1. The 63rd Research Institute of the PLA General Staff Headquarters, Nanjing 210007, China;;
Research On Modeling Of Weapons System Of Systems Evaluation, Jianjun Cao, Haizhou Ma, Delong Jiang
Journal of System Simulation
Abstract: The evaluation of weapons system of systems is an important link in the development of weapons system of systems. It is in the development stage and lacks complete theoretical system and systemic research achievement. Based on improving tentatively the evaluation indexes in evaluation of weapons system of systems, the new strategy of evaluation analysis was proposed by fuzzy mathematics theory. It did not only consider adequately the influence by the evaluation objective, but also built the models of comprehensive evaluation for each link in evaluation process and designed the flow chart for programming. It provided a systemic feasibility …
Research Of Maglev Train Dynamics Simulation Based On Levitation Control Algorithm,
2020
Key Laboratory of Magnetic Suspension Technology and Maglev Vehicle, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, China;
Research Of Maglev Train Dynamics Simulation Based On Levitation Control Algorithm, Songqi Li, Kunlun Zhang
Journal of System Simulation
Abstract: A dynamics model for a whole section of the EMS maglev train was built based on MATLAB, the model described the relationship among body - levitation frame - elastic track and had four degrees of freedom. It simulated and analyzed the vehicle-track coupled vibration dynamic behavior while the vehicle passing the elastic tracks at 200 km/h, using three different kinds of control algorithms respectively. The simulation results show that under the condition of a certain speed and fixed vehicle-track physical parameters, the dynamics behaviors of body - levitation frame - track are obviously different by adopting different control algorithm, …
Research On 3g Emergency Communication Network Simulation System Based On Performance Evaluation,
2020
College of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China;
Research On 3g Emergency Communication Network Simulation System Based On Performance Evaluation, Tang Hong, Yang Guang, Chuan Xu, Wenguang Tang
Journal of System Simulation
Abstract: According to the application requirements of simulation evaluation about Emergency communication network performance when making emergency response plans and simulating exercises, the communication network simulation models were analyzed for 3G emergency communication systems. Then a simulation system of 3G emergency communication networks was designed and implemented with system-level dynamic simulation technology in order to perform the real-time simulation and provide the related performance parameters for network performance evaluation of 3G mobile emergency communication systems under different scenarios. Experiment results show that the system proves its high efficiency and validity.
Embedded Power Optimization Method Based On User Behavior,
2020
School of Information Science and Technology, Northwest University, Xi'an 710127, China;
Embedded Power Optimization Method Based On User Behavior, Wang Hai, Gao Ling, Dongqi Chen, Ren Jie
Journal of System Simulation
Abstract: In recent years, with the rapid development of embedded device represented by mobile phone and tablet computer, low power technology has been one of the hotspots in the embedded research field. Because the battery capacity of embedded device is limited due to its restricted volume and weight, there are often users suffering the problem that their phone battery being dead. There are many research directions in embedded low power field at present. The relationship between low power and user behavior recognition was aimed, which started with recognizing user behavior using machine learning and then obtains the user’s daily usage …
Simulation And Exergy Analysis Of Aircraft Fuel System,
2020
School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China;
Simulation And Exergy Analysis Of Aircraft Fuel System, Liu Shuang, Wanyan Xiaoru, Damin Zhuang
Journal of System Simulation
Abstract: Based on a certain type of aircraft fuel system design for the prototype, and characterized by the self supplied fuel network, the mathematical models of the main components were built. Using the modular structure method, the Simulink/Matlab was adopted for building the simulation modules of various components and forming the whole simulation system. According to the simulation calculation, the flow, pressure and temperature for each node of the fuel system were obtained, and the effects of several parameters of heat exchangers on its exergy losses were analyzed. The present study provides a new method and idea for the modeling …
Research On Interoperability Between Tena And Certain Command & Control System,
2020
Department of Electric and Optics Engineering, Ordnance Engineering College, Shijiazhuang 050003, China;
Research On Interoperability Between Tena And Certain Command & Control System, Zhihua Dong, Yuanchang Zhu, Yanqiang Di, Xianguo Meng
Journal of System Simulation
Abstract: The heterogeneity prevents systems from the interoperability between C2 system and TENA for inter-connection in test community. Message Transfer Service contains End-to-End deployment mode and Cross-Network deployment mode, respectively there being two Inter-architecture with TENA system. Gateway can be designed to be single-threaded or multi-threaded. From the perspective of interoperability Gateway realizes the interoperability between communication protocols, object models and supporting services. Cooperation mechanism is designed to achieve the interoperability between the communication mechanism of pull mode in TENA and in C2P; meta-model of Message with OWL, and the object model interoperability is realized through model conversion; self-defined …
Error Correction Methods In Numerical Simulation For Unilateral Constraint Dynamics,
2020
College of Mechanical Engineering, Nanjing Institute of Technology, Nanjing 211167, China;
Error Correction Methods In Numerical Simulation For Unilateral Constraint Dynamics, Haitao Gao, Yali Han, Youxiong Xu, Songqing Zhu, Zailuo Wu
Journal of System Simulation
Abstract: Aiming at problem of calculation errors and constraint violation in numerical simulation for dynamics of unilateral constraint such as contact and collision, the error projection correction methods were put forward. On the basis of dynamical behavior of unilateral constraint described by linear programming model, mixed linear complementarity dynamics was built. Numerical simulation methods for the mixed linear complementarity dynamics were derived. In order to reduce calculation error and constraint violation caused by this error in the numerical simulation, an error correction method was built for correcting position and velocity error of numerical solution on the base of bilateral …
Improved Strategy To Reduce Common-Mode Voltage For Matrix Converter,
2020
1. Xi'an University of Technology, Xi'an 710048, China;;2. State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China;
Improved Strategy To Reduce Common-Mode Voltage For Matrix Converter, Weizhang Song, Li Xi, Minyuan Li, Yanru Zhong
Journal of System Simulation
Abstract: Aiming at the large instantaneous common-mode voltage in traditional space vector modulation strategy for two-stage matrix converter (TSMC), on the basis of analyzing the laws of common-mode voltage, an improved modulation strategy to reduce common-mode voltage was proposed. To suppress common-mode voltage effectively, in this strategy, the rectification stage sector was subdivided into twelve sectors from six sectors, according to the sector of the reference current vector and dc-side voltage, the switching points of inverter stage were redefined and reallocated, and zero vector of inverter was selected and distributed reasonably, instantaneous maximum value of common-mode voltage was reduced to …
Research On Motion Control Technology Of Virtual Human’S Lower Limb Based On Optical Motion Capture Data,
2020
1. State Key Discipline Laboratory of Armament Launch Theory and Technology, The Second Artillery Engineering University, Xi'an 710025, China;;
Research On Motion Control Technology Of Virtual Human’S Lower Limb Based On Optical Motion Capture Data, Liang Feng, Zhili Zhang, Xiangyang Li, Zhibo Tang, Ma Chao
Journal of System Simulation
Abstract: As passive-optical motion capture equipment could only capture the motion information of human’s key joints, a simplified skeleton structure model of virtual human was introduced; and then the error sources of motion data of virtual human were analyzed according to the acquisition process of optical motion capture data based on the skeleton structure model. Focusing on the problem of poor continuity of motion process of virtual human’s lower limb caused by continuity deficiency of motion capture data, a motion control method was proposed to strengthen the control of motion process of virtual human, which included data smoothing of motion …
Servo Load Simulator Based On Improved Wavelet Neural Network,
2020
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;
Servo Load Simulator Based On Improved Wavelet Neural Network, Wang Chao, Rongzhong Liu, Yuanlong Hou, Gao Qiang, Wang Li
Journal of System Simulation
Abstract: In order to prevent the surplus torque of servo load simulator which had influence in the performance of the torque load, an intelligent controller was put forward based on the improved self-learning functional expansion wavelet neural network. The Bang-Bang control is used when the error is big, and if the error is small, function expansion based on wavelet neural network and fuzzy compensation control is used; At the same time, the improved differential evolution algorithm is for estimating the parameters of the controller. Considering the computational complexity and performance of the control system, the number of hidden neurons …
Controller Design For Hypersonic Vehicle Based On Kalman Filter,
2020
Department of Mechanics and Engineering Science, Fudan University, Shanghai 200433, China;
Controller Design For Hypersonic Vehicle Based On Kalman Filter, Tao Chao, Jianliang Ai
Journal of System Simulation
Abstract: For a generic hypersonic vehicle with unstable longitudinal and lateral-directional mode, considering the three dimensional turbulence and their gradient, all states linear dynamic equations were established. All states H∞ feedback control was proposed based on the discrete Kalman filter when three dimensional turbulence and system measurement noise were taken into consideration. In this way, state estimation created by the Kalman filter to the H∞ controller was delivered. This method could guarantee the robustness when external atmospheric turbulence and itself parameter matrices perturbation caused by the flight condition variation existed. The results show that for both the nominal …
Modeling And Simulation Of Urination Assist System Driven By Ultrasonic-Vaporized Steam,
2020
1. School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China;;
Modeling And Simulation Of Urination Assist System Driven By Ultrasonic-Vaporized Steam, Li Xiao, Huaizhou Zhou, Zhichao Shi, Ting Guan, Yuansong Xiao
Journal of System Simulation
Abstract: Aiming at the problem of assisting the neurogenic bladder micturating, a novel urination assist system driven by ultrasonic-vaporized steam was proposed. The mathematical model of the multi-field coupling relation between the external ultrasonic controlling parameters and the urine flow rate of urinary bladder was built using ultrasonics, thermodynamics and fluid mechanics theories. The simulation analysis of the influence of the controlling parameters on the urine flow rate performance of the system was conducted. The results show that the urine flow rate are mainly affected by the ultrasonic sound intensity, frequency, radiation area and time, as well as the system …
Analysis The Nano Contact Force Of Single Crystal Copper In Contact And Separation Processes,
2020
School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350108, China;
Analysis The Nano Contact Force Of Single Crystal Copper In Contact And Separation Processes, Jianmeng Huang, Jingjing Chen
Journal of System Simulation
Abstract: On the basis of considering the adhesive force and copper substrate elastic-plastic deformation, the contact and separation processes between diamond indenter and copper substrate are simulated based on EAM and Morse potentials and Verlet algorithm. The results show that, when diamond indenter approaches slowly to copper substrate during the contact process, some atoms at the top level of substrate happened “snap back” phenomenon significantly due to the gravity became the main interaction force. Furthermore, it can be seen that the contact force and the accumulation phenomenon of dislocation atoms increase gradually with the increment of diamond displacements. During in …
