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Meta Modeling Methodology For Cnc System, Suhua Xiao 2020 College of Electromechanical Engineering, Guangdong Polytechnic Normal University, Guangzhou 510635, China;

Meta Modeling Methodology For Cnc System, Suhua Xiao

Journal of System Simulation

Abstract: Methodology development of CNC system takes the field as a carrier centric model, which applies UML / OCL in GME for CNC system meta-modeling. For the field characteristic analysis for CNC, a CNC field oriented CNCVFC meta-modeling methodology was proposed, which combined the view, feature, component three-dimensional relationship. According to field characterization CNC members and interactions, multi-view approach captures features CNC field was adopted, which mapped to the appropriate view plane to establish the appropriate view of the container field meta-model, CNC elaborated meta-modeling process, including structural meta-modeling, function meta-modeling and non-functional meta-modeling of three areas. A …


Fingerprinting Positioning Algorithm For Wifi Based On Locally Weighted Regression And Support Vector Regression Optimized By Artificial Bee Colony, Wang Yan, Fucheng Yin, Zhicheng Ji, Dahu Yan 2020 Engineering Research Center of Internet of Things Technology Applications Ministry of Education, Wuxi 214122, China;

Fingerprinting Positioning Algorithm For Wifi Based On Locally Weighted Regression And Support Vector Regression Optimized By Artificial Bee Colony, Wang Yan, Fucheng Yin, Zhicheng Ji, Dahu Yan

Journal of System Simulation

Abstract: Since the traditional location fingerprinting algorithms have poor positioning accuracy and cost laborious efforts constructing fingerprinting database during the offline phase, a novel LWR-ABCSVR positioning algorithm was proposed, that the derived algorithm was based on the locally weighted regression (LWR) method and support vector regression was optimized by artificial bee colony (ABCSVR) algorithm. By using the proposed algorithm, the fingerprinting database was expanded by LWR step. The ABCSVR algorithm was employed to build the nonlinear relationship between the RSS values of reference points and their locations. The position of mobile terminal was predicted by the constructed model. Simulation results …


Research On Simulation Of Multi-Target Micro-Doppler Separation And Extraction In Ballistic Midcourse, Yizhe Wang, Cunqian Feng, Jingqing Li 2020 Air and Missile Defense College, Air Force Engineering University, Xi'an 710051, China;

Research On Simulation Of Multi-Target Micro-Doppler Separation And Extraction In Ballistic Midcourse, Yizhe Wang, Cunqian Feng, Jingqing Li

Journal of System Simulation

Abstract: Aiming at the intricate overlap and difficult separation and extraction of micro-Doppler information in Doppler spectra of warheads and fragments in midcourse, a novel method based on CEEMD and improved self-adaptive Viterbi algorithm was proposed. By analyzing the differences of micro-Doppler distribution between warheads and fragments, the echo was decomposed by CEEMD and each IMF was denoised by wavelet threshold denoising method, resulting in separation of warheads and fragments echo. The fragments signal was stretched, the optimal path was extracted combined with improved self-adaptive Viterbi algorithm, and the separation of multi-target signal and extraction of micro-Doppler was realized. Simulation …


Study On Single-Point Dresser Wear Intelligent Prediction Method, Yulun Chi, Haolin Li, Yue Tai 2020 University of Shanghai for Science and Technology, Shanghai 200093, China;

Study On Single-Point Dresser Wear Intelligent Prediction Method, Yulun Chi, Haolin Li, Yue Tai

Journal of System Simulation

Abstract: In precision grinding process, grinding wheel should be dressed in time to keep the wheel sharpness and correct geometry. Now, it is still a difficult problem how to effectively predict the dresser wear in process. According to the single-point dresser wear mechanism, a method was proposed to predict the single-point dresser wear based on the acoustic emission signal and the sequential minimal optimization support vector machines (SMO-SVM) model. The wavelet packet algorithm was used to exact acoustic emission signal characteristic information. According to the large sample of acoustic emission signal, the sequential minimal optimization support vector machines (SMO-SVM) model …


Svpwm Algorithm Based On Non-Orthogonal Coordinates, Shuaiqi Ma, Pengchao Zhang 2020 School of Electrical Engineering, Shaanxi sci-tech University, Hanzhong 723000, China;

Svpwm Algorithm Based On Non-Orthogonal Coordinates, Shuaiqi Ma, Pengchao Zhang

Journal of System Simulation

Abstract: As to the issue of complex trigonometric calculation for conventional SVPWM modulation algorithms, an SVPWM optimization algorithm in non-orthogonal coordinate system was proposed. By using Clark, Non-orthogonal Coordinate and per unit transformation, the algorithm simplified the regional judgment of reference vector in the sectors and triangle and optimized the calculation of basic vector action time. It realized normalization of three vectors times by using a normalization algorithm for mapping other sectors to I sector. The algorithm can effectively reduce the amount of SVPWM algorithm calculation, switching frequency, and switching losses. Simulation results show that the algorithm is …


Adaptive Fuzzy Robust H∞ Control Of Flexible-Joint Space Robot, Lijiao Zhang, Chen Li 2020 1. School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350108, China; ;2. Collaborative Innovation Center of High End Equipment Manufacturing, Fuzhou 350116, China;

Adaptive Fuzzy Robust H∞ Control Of Flexible-Joint Space Robot, Lijiao Zhang, Chen Li

Journal of System Simulation

Abstract: In order to solve the problem of trajectory tracking and vibration suppression control for parameter unknown flexible-joints space robot system, a joint flexibility compensation controller was introduced to improve the equivalent stiffness of the joint; by using the singular perturbation method, the system was decomposed into a slow subsystem and a fast subsystem. For the slow subsystem, the adaptive fuzzy H∞ control algorithm was designed; by using the fuzzy logic system to approximate the system uncertainty, a robust H∞ control was used to eliminate the influence of the fuzzy approximation legacy of error to the output tracking …


Infrared Image Segmentation Based On Improved Dimensional Otsu And Genetic Algorithm, Kun Wang, Zhang Yang, Shengbo Song, Jingchang Zhuge 2020 Civil Aviation University of China, Tianjin 300300, China;

Infrared Image Segmentation Based On Improved Dimensional Otsu And Genetic Algorithm, Kun Wang, Zhang Yang, Shengbo Song, Jingchang Zhuge

Journal of System Simulation

Abstract: In order to improve the image segmentation of circuit board, and solve the problem of circuit board fault diagnosis, a new algorithm combines adaptive genetic algorithm and improved two-dimensional OTSU algorithm was proposed. a fast sorting method, in accordance with changes in the genetic algebraic, crossover and mutation probability was improved; according to the distance between the center and neighboring pixels pixel for the neighborhood average algorithm to weight the scale factor, on the basis of judgment on noise point of thermal infrared image to reduce noise; and introduced into the class variance method to solve the equation for …


Development Of Hybrid Electric Vehicle Hardware-In-The-Loop Testing System, Bin Yan, Ting Yan, Yang Lin, Chen Liang, Zhou Wei 2020 1. School of Mechanical Engineering of Shanghai Jiao Tong University, Shanghai 200240, China; ;

Development Of Hybrid Electric Vehicle Hardware-In-The-Loop Testing System, Bin Yan, Ting Yan, Yang Lin, Chen Liang, Zhou Wei

Journal of System Simulation

Abstract: Control system has significant influence on Hybrid Electric Vehicles (HEV) acceleration performance, drivability and reliability. In order to ensure system reliability and safety, an elaborate test was done for different performance indexes in the process of system development. Though software-based test has some advantage in testing process and flexibility, it is only able to achieve logical verification on basic function of control strategy. Besides, it does not take into account of the effect of controller hardware, and has some limitation in real-time testing. Instead, hardware-in-the-loop (HIL) can overcome these shortages, can test systematically for controller. HEV test environment was …


Weapon Effectiveness Simulation System (Wess), Yonglin Lei, Yao Jian, Zhu Ning, Yifan Zhu, Weiping Wang 2020 Institute of Simulation Engineering, College of Information System and Management,National University of Defence Technology, Changsha 410073, China;

Weapon Effectiveness Simulation System (Wess), Yonglin Lei, Yao Jian, Zhu Ning, Yifan Zhu, Weiping Wang

Journal of System Simulation

Abstract: Combat Systems Effectiveness Simulation (CESS) is an important supportive means to combat systems analysis and conceptual design. When confronted with issues like model reusability, simulation composability, and system evolvability, traditional approaches to develop CESS systems find their limitations. Based on years experiences in CESS field and best practices found in overseas CESS simulation systems, a model architecture based CESS modeling methodology was proposed. Around a sophisticated CESS model architecture, a generic CESS system, named WESS, was realized. The functional features, software architecture, application processes, and key aspects of WESS were introduced. A typical case study demonstrates the functionalities of …


Research On Full-Circuit Simulation Platform For Conducted Noise Pre-Evaluation, Shangbin Ye, Jiajia Zhang, Yicheng Zhang, Yongtao Yao 2020 School of Electronics and Information Engineering, Tongji University, Shanghai 201804, China;

Research On Full-Circuit Simulation Platform For Conducted Noise Pre-Evaluation, Shangbin Ye, Jiajia Zhang, Yicheng Zhang, Yongtao Yao

Journal of System Simulation

Abstract: As conducted noise frequency band of power convertor in electric vehicle is stricter than that in normal industrial equipment, a conducted noise simulation modeling method is needed which is suit for wide frequency range. A full-circuit conducted noise modeling method based on component model was proposed, in which high frequency dynamic characteristic was simulated by the active device model, complex impedance characteristic at full frequency band was described by the passive model, distributed parameter of bus structure and near-field coupling parameter were extracted to simulate their influence on coupling path of conducted noise. On the basis, full-circuit simulation platform …


Speed-Aware-Based Reliable Probabilistic Route In Manet, Yaohua Chen, Lingxi Peng, Gu Peng 2020 1. School of Mechanical & Electric Engineering, Guangzhou University, Guangdong 510006, China; ;

Speed-Aware-Based Reliable Probabilistic Route In Manet, Yaohua Chen, Lingxi Peng, Gu Peng

Journal of System Simulation

Abstract: For broadcast problem of routing in MANET, speed-aware-based reliable probabilistic route discovery (SRPR) scheme was proposed. SRPR considered speed vector and all nodes were divided into reliable nodes and un-reliable nodes. A node among reliable nodes closest to destination was assigned a high probabilistic routing decision by greedy forwarding strategy. The reliability of routing was improved and the number of routing hop was reduced by SRPR scheme. Ad Hoc On-demand Distance Vector (AODV) routing was adopted in the experiments. Simulation results show that the proposed routing protocol mitigates the broadcast storm problem and outperforms in term of number of …


Double Bare Bones Particle Swarm Algorithm For Solving Flexible Job-Shop Scheduling Problem, Yueming Dai, Minghui Wang, Wang Chun, Wang Yan 2020 Engineering Research Center of Internet of Things Technology Applications Ministry of Education, Jiangnan University, Wuxi 214122, China;

Double Bare Bones Particle Swarm Algorithm For Solving Flexible Job-Shop Scheduling Problem, Yueming Dai, Minghui Wang, Wang Chun, Wang Yan

Journal of System Simulation

Abstract: To solve flexible job shop scheduling problem, a double bare bones particle swarm algorithm (DBBPSO) was proposed to minimize the makespan. Combining Von-neumann bare bones particle swarm optimization algorithm and chaotic mutation bare bones particle swarm optimization algorithm, the algorithm DBBPSO used a communication method to cooperate evolution. This approach could keep balance between global exploration and local exploration, and a machine selection method was proposed based on the tenet of minimizing makespan. The proposed algorithm was compared with other algorithms on four benchmark problems and a scheduling optimization example. Simulation results indicate that the improved algorithm has …


Model Uncertainty Quantification For Dependent Variables Based On Random Set Theory, Zhao Liang, Zhanping Yang 2020 1. Southwest University of Science and Technology, School of Information Engineering, Mianyang 621010, China; ;

Model Uncertainty Quantification For Dependent Variables Based On Random Set Theory, Zhao Liang, Zhanping Yang

Journal of System Simulation

Abstract: Random set theory provides a uniform mechanism for model uncertainty quantification in system analysis. An improved method was proposed based on random set theory for uncertainty quantification considering the dependence among system variables. The Nataf transformation was used to generate dependent random samples to be consistent with correlation coefficients information, and then the joint basic probability assignments for the multidimensional focal elements were calculated to construct the random set. The result of uncertainty quantification based on the random set can reflect the real system response under dependent variables. Simulation results show the presented method rationality.


State Feedback Control Of Hybrid Active Power Filter, Yunjian Wang, Xiaoyun Liu, Rongzhi Zhang, Nana Xue 2020 1. School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454000, China; ;

State Feedback Control Of Hybrid Active Power Filter, Yunjian Wang, Xiaoyun Liu, Rongzhi Zhang, Nana Xue

Journal of System Simulation

Abstract: According to the current tracking of active power filter, a state feedback control strategy was applied to three-phase shunt hybrid active power filter system, replacing popular PID controller, to overcome the drawbacks of the PID controller, such as big overshoot, error compensation etc.. The mathematical model was established and the feedback control law was derived based on the topological structure of hybrid active power filter selected. Moreover, the current detection used ip-iq detection algorithm while the stability of capacitor voltage in DC side used PI control. MATLAB/Simulink was applied to simulate the HAPF system, comparing with …


Design And Simulation Of Cut Flat Boring Bar By Both Materials' Composite Structure, Xie Feng, Wenxuan Wang, Xiaobao Lei 2020 Department of Electrical Engineering and Automation, Anhui University, Hefei 230601, China;

Design And Simulation Of Cut Flat Boring Bar By Both Materials' Composite Structure, Xie Feng, Wenxuan Wang, Xiaobao Lei

Journal of System Simulation

Abstract: Because the stressed structure of the boring bar in machine tool is a cantilever beam, and it is very easy to produce vibration. To study the vibration problem of boring bar, the general structure of boring bar was improved into the built-in damping core boring bar structure composed of two materials, according to the principle of self-excited vibration's coupling flutter and forced vibration's dynamic damping. At the same time, according to the principle that reasonable arrangement of small stiffness of the boring bar could reduce vibration, the composite structure boring bar was cut flat expecting to reach optimal damping …


Design Of Real-Time Communication On Bus Using Dspace System, Yan Cheng, Decong Huo, Xie Song 2020 DFH Satellite Co., Ltd, Beijing 100094, China;

Design Of Real-Time Communication On Bus Using Dspace System, Yan Cheng, Decong Huo, Xie Song

Journal of System Simulation

Abstract: The analysis of the problem of real-time communication on CAN bus was proposed using dSPACE simulator, and the solution was proposed. The CAN communication model based on dSPACE was designed using the methods of Interrupt or Enable to trigger the action. The spacecraft subsystem simulation model was built on the dSPACE, and the real-time communication was performed following the spacecraft CAN bus communication protocol, to implement the communication with large amount of data between subsystem simulation model and data handling subsystem. The simulation result verifies the validity of the communication method.


Motion Object Feature Extraction Method Based On Multi-Feature Fusion, Xidao Luan, Yuxiang Xie, Zhang Xin, Niu Xiao 2020 1. College of Computer Engineering and Applied Mathematics, Changsha University, Changsha 410003, China; ;

Motion Object Feature Extraction Method Based On Multi-Feature Fusion, Xidao Luan, Yuxiang Xie, Zhang Xin, Niu Xiao

Journal of System Simulation

Abstract: Motion object feature extraction is the basis of motion object classification. Traditionally motion object classification mainly depends on single feature extraction which is sensitive to the aspects like motion object detection area, angle, scale and noise disturbance, thus decreases the classification efficiency. To solve these problems and improve the robustness of the algorithms, a motion object feature extraction method based on multi-feature fusion was proposed. In this method, width height ratio feature, rotation invariant uniform local binary pattern feature and SIFT feature were considered, and by fusing them into the SVM and KNN classifier, motion object classification was carried …


Numerical Simulation Of Aluminum Foam Cushion Performance Analysis On Set-Forward Overload Of Fuze, Kuahai Yu, Xuhui Zhang, Hongyu Xu, Li Rong, Xingguo Kang 2020 1. Department of Engineering Mechanics, Henan University of Since and Technology, Luoyang 471023, China; ;

Numerical Simulation Of Aluminum Foam Cushion Performance Analysis On Set-Forward Overload Of Fuze, Kuahai Yu, Xuhui Zhang, Hongyu Xu, Li Rong, Xingguo Kang

Journal of System Simulation

Abstract: Buffering protect of fuze under high-speed impact was realized using aluminum foam gasket with special pore structure, and numerical simulation method to achieve the buffer validity analysis. Numerical model of three-layered concrete target projectile penetration was established, and the numerical model was validated to be accurate by comparing the fuze acceleration curves of simulation and experiment results. Numerical simulations were completed to predict the cushioning effect for different foamed aluminum structures. The result reveals that foamed aluminum cushioning can reduce the load of the fuze, and the foam's void ratio and thickness will significantly affect the cushioning performance, and …


Modeling And Realization Of Radar Signal Environment Based On Systemvue, Limin Liu, Cheng Cheng, Zhuangzhi Han 2020 Department of Electronic and Optical Engineering, Ordnance Engineering College, Shijiazhuang 050003, China;

Modeling And Realization Of Radar Signal Environment Based On Systemvue, Limin Liu, Cheng Cheng, Zhuangzhi Han

Journal of System Simulation

Abstract: Aiming at the practical requirements of electronic reconnaissance subsystem in an electronic countermeasure simulation system, according to electronic reconnaissance forms and the distribution of two parties, a modeling method of radar signal environment was proposed. It provided the mixed signals source for electronic reconnaissance subsystem. The signal modeling principle was proposed, which defined the position information of radar platform and target platform in trajectory layer. The angle information was defined in antenna layer, which realized radar signal modeling in signal layer. The radar signal environment simulation system of electronic countermeasure was established based on SystemVue at last. It is …


Location Method Of Insulators In Power Grid Patrol Aerial Images, Haiyan Cheng, Han Pu, Wang Di, Yongjie Zhai 2020 North China Electric Power University, Hebei Engineering Research Center of Simulation & Optimized Control for Power Generation,Baoding 071003, China;

Location Method Of Insulators In Power Grid Patrol Aerial Images, Haiyan Cheng, Han Pu, Wang Di, Yongjie Zhai

Journal of System Simulation

Abstract: A method to locate the insulators in the power grid patrol aerial images was proposed. OTSU algorithm improved by genetic algorithm was applied to segment insulators from backgrounds. The segmented images were filtered and reconstructed based on morphology algorithm. SketchUp software was used to build insulator samples, namely positive samples. The moment invariants of these samples and negative samples(background) were calculated respectively to train a classifier based on AdaBoost algorithm. By using the trained classifier, segmented insulators were classified and located coarsely. The Order Cut method (OC) was used to cut the original minimum circumscribed rectangle consisting of all …


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