Co-Design Between Robust H∞ Guaranteed Cost Fault-Tolerant And Communication For Nncs Based On Event-Triggered,
2020
College of Electrical and information engineering, Lanzhou University of Technology, Lanzhou 730050, China;
Co-Design Between Robust H∞ Guaranteed Cost Fault-Tolerant And Communication For Nncs Based On Event-Triggered, Li Wei, Kun Yan, Yajie Li
Journal of System Simulation
Abstract: Based on the discrete event-triggered communication scheme (DETCS), the co-design between robust H∞ guaranteed cost fault-tolerant control and communication was studied for uncertain nonlinear networked control system (NNCS) with actuator failures. Firstly, a new closed-loop failure model was established by introducing the DETCS and adopting state feedback control strategy. Then, based on the Lyapunov stability theory and less-conservative technology, the sufficient condition of NNCS with robust H∞ guaranteed cost was derived, which was the time-delay/event-dependent approach, moreover, some optimal co-design methods between the fault tolerant controller and event-triggered weight matrix were given. Furthermore, the co-design problems of …
Lie Group Modeling And Optimal Control Of Underwater Vehicle,
2020
1. School of Mechanical Electronic &Information Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China;;
Lie Group Modeling And Optimal Control Of Underwater Vehicle, Bai Long, Zhifeng Dong, Xinsheng Ge
Journal of System Simulation
Abstract: The Lie group modeling method and gauss pseudo-spectral energy optimal control of the underwater vehicle are in research. Simplifying the underwater vehicle to be a free rigid body, in view of the possible large attitude angle maneuvering of the underwater vehicle, importing the concept of lie group and lie algebra, combining with the variation method and Lagrange method, the dynamics equation of the rigid body was derived, translating the tradition expression of the hydrodynamic force to obtain the dynamics equation of the underwater vehicle base on the lie group. With the Gauss pseudo-spectral method, the continue space optimal …
Study On Flywheel Automotive-Brake Energy Recovery System,
2020
1. Nanchang University, Mechanical and Electrical Engineering, Nanchang 330031, China;;
Study On Flywheel Automotive-Brake Energy Recovery System, Juhua Huang, Fuzhong Wang, Junping Yang
Journal of System Simulation
Abstract: The generator automotive-braking energy recovery system can only be applied to the new energy vehicles. In order to improve the situation, a kind of flywheel automotive-braking energy recovery system (FAERS) was proposed that could be applied to the traditional vehicles. The structure of the FAERS was designed and its working principle was explained in detail. The working principle of the FAERS and the main structural parameters—the maximum torque of the electromagnetic clutch, the transmission ratio of the energy storage flywheel and the rotational inertia of the energy storage flywheel were simulated in the environment of Matlab-Simulink, which …
Traveling Wave Detection Fault Location Method Based On Src And Lcd,
2020
1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources (North China Electric Power University,Baoding 071003, China;;2. Hebei University of Engineering, Handan 056038, China;
Traveling Wave Detection Fault Location Method Based On Src And Lcd, Yanfeng Gao, Yongli Zhu, Hongyan Yan, Yuanyuan Zhang
Journal of System Simulation
Abstract: The accuracy of fault detection by traveling wave is a key for distance measurement on transmission lines. A new traveling wave detection method was proposed based on SRC (Sampling Rate Conversion) and LCD (Local Characteristic scale Decomposition), which considered quantization error reduction and the signal decomposition. The sampling rate of the current line mode components with fixed sampling rate was converted to realize resampling of reconstructed signal. The local characteristic scale of resampling signal was decomposed and the instantaneous frequency of the first intrinsic scale component was calculated by using Teager energy operator, which identified the moment …
Energy Conservation And Emissions Reduction Policy Simulation About Energy-Consuming Enterprises,
2020
Sichuan Electric Power Research Institute, Chengdu 610072, China;
Energy Conservation And Emissions Reduction Policy Simulation About Energy-Consuming Enterprises, Yongbo Yang, Chen Ying, Yang Jing, Mingzhong Liu, Zhenchao Jiang, Zeng Rong
Journal of System Simulation
Abstract: Energy conservation and emissions reduction policy have made some achievements, at the same time there are still some problem such as too much administrative command, lack of market mechanism and the lack of price mechanism. The government is both energy conservation leader, supervisor also rule makers. In order to formulate energy conservation policy, they must have overall cognition on energy conservation and emissions reduction. The dynamic relationship between the government, enterprise and environment was analyzed setting up simulation model for key energy-consuming enterprises based on system dynamics. Through the simulation, the influence of different policies for energy conservation …
Sigma Point Kalman Filters For Re-Entry Ballistic Target Tracking,
2020
School of Electronics and Control Engineering, Chang'an University, Xi'an 710064, China;
Sigma Point Kalman Filters For Re-Entry Ballistic Target Tracking, Chunling Wu, Yongfeng Ju, Hu Ping, Chengdong Duan
Journal of System Simulation
Abstract: A new kind of sigma-point Kalman filter was proposed, quadrature Kalman filter(QKF), for the purpose of re-entry ballistic target tracking applications. The new filter linearized the nonlinear functions using statistical linear regression method through a set of Gaussian-Hermite quadrature points that parameterized the Gaussian density. The simulation experiment compared this new sigma point filter with EKF, DDF and UKF. Simulation results show that the estimation errors of all sigma point filters are all lower than that of EKF. The estimation error of QKF is lower than that of UKF, and its filtering credibility is almost same as that of …
Coral Reefs Optimization For Solving Parameter Identification In Permanent Magnet Synchronous Motor,
2020
1. Institute of Electrical Automation, Jiangnan University, Wuxi 214122, China;;
Coral Reefs Optimization For Solving Parameter Identification In Permanent Magnet Synchronous Motor, Yawei Quan, Tian Na, Zhicheng Ji, Wang Yan
Journal of System Simulation
Abstract: High accuracy identification of parameters in permanent magnet synchronous motor (PMSM) is the basis of controller design. According to the drawbacks of slow speed, big error, and small number of parameters in classical particle swarm optimization (PSO) and least square method, Coral Reefs Optimization (CRO) was proposed to solve the parameter identification problem in PMSM. In order to improve the identification accuracy, the parameter setting in CRO was adjusted. The mathematical model of PMSM in coordinate system was established, CRO, PSO and RLS were applied to identify parameters in PMSM, and were verified in Matlab/Simulink for comparison. The simulation …
Impact Analysis On Distribution Prediction Of Stipa Species Under Climate Change,
2020
School of Science, Jiangnan University, Wuxi 214122, China;
Impact Analysis On Distribution Prediction Of Stipa Species Under Climate Change, Xuqing Tang, Jianlin Li
Journal of System Simulation
Abstract: Based on the actual climatic data from 1981 to 2000 in Northeast China, the predicted climatic data and the actual distribution data of Stipa species, 12 climatic factor indicators affecting Stipa species distribution were extracted combining with similar biological and ecological characteristics of Stipa. By introducing Gauss Competitive Exclusion Principle and the statistical analysis method, a competitive stochastic mathematical model of the distribution of Stipa was built, and the corresponding algorithm was given. The forecast figures were obtained for the optimal, medium and general adaptable distribution of the five Stipa species from 2041 to 2050 and from 2091 …
Multi-Channels Converged Communication Method In Mobile Terminals Based On Virtual Link,
2020
School of Computer Science and Technology, Soochow University, Suzhou 215006, China;
Multi-Channels Converged Communication Method In Mobile Terminals Based On Virtual Link, Wenqiang Yao, Kaisheng Xu, Feng Jie, Yanqin Zhu, Lingzhi Li
Journal of System Simulation
Abstract: In the region overlapping multiple radio signals such as 3G/4G and Wi-Fi, the mobile terminal usually only chooses one of sigals to transmit data. It limits the access bandwidth of the mobile terminal, influences the upper applications running on the devices, and increases the costs of data communication. A new multi-channels converged communication method was proposed according to the analysis of existing technology. The method used the virtual link receiving all the packets sent by upper applications, and sent the packets simultaneously in multi-channels according to the status of every physical channel. The specific implementation processes were given about …
Information Collaboration Model Of Cloud Computing Supply Chain Based On Multi-Agent,
2020
1. Department of Computer Engineering, Dongguan Polytechnic, Dongguan 523808, China;;
Information Collaboration Model Of Cloud Computing Supply Chain Based On Multi-Agent, Wuxue Jiang, Xuanzi Hu, Minxia Liu, Yuqiang Chen
Journal of System Simulation
Abstract: In order to improve the work efficiency of supply chain in cloud computing and avoid the risks of cloud computing, a cloud-based supply chain information coordination model was proposed. The model has two basic states which are online status and offline status, at online state the cloud computing center is responsible for coordination of the entire supply chain information, and at offline state each node continues to complete the transaction order through the history record and each node information in the cloud data center. Simulation based on Multi-agent shows that the order completion rate in offline status is …
Simulation Realization Of Netted Radar Data Fusion Systems,
2020
1. Information Center of Exercitation Department, National University of Defense Technology, Changsha 410073, China;;
Simulation Realization Of Netted Radar Data Fusion Systems, Zhijie Chen, Bin Rao, Yongzhen Li, Zhiwei Zong
Journal of System Simulation
Abstract: The system realization problem of netted radar data fusion systems was focused on. The design aspects of functionality, constitution and realization of netted radar systems were investigated. An architecture consisted of a CPCI (Compact PCI) industrial control computer and multiple digital DSP (Digital Signal Processing) processors was developed. The software workflows of each netting mode (centralized fusion and distributed fusion) were given and the simulation results related to typical scenarios were illustrated. The system can serve as a testing platform of efficiency evaluation relating to radar netting in the presence of electronic countermeasures.
Semantic Knowledge Base Constructed From Chinese Online Encyclopedia,
2020
1. CAS Key Laboratory of Network Data Science and Technology, Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100190, China;;2. University of Chinese Academy of Sciences, Beijing 100190, China;;3. PLA University of Foreign Languages, Luoyang 471003, China;
Semantic Knowledge Base Constructed From Chinese Online Encyclopedia, Liu Jian, Hongbo Xu, Huifeng Tang, Yantao Jia, Xueqi Cheng
Journal of System Simulation
Abstract: The traditional construction methods about semantic knowledge base cost a lot of manpower and material resources. In addition, knowledge is difficult to acquire timely updates. In view of the deficiency, a new semantic representation model was put forward based on semantic ontology and hypergraph theory which was named dynamic knowledge network. Then, this model was described in detail, which included theoretical basis and model elements. Under the guidance of the model, the extraction methods and storage structure were studied about semantic knowledge. A Chinese semantic knowledge base was semi-automatic constructed using Chinese 360 Encyclopedia data which could efficiently provide …
Approach To Process Smart Grid Time-Serial Big Data Based On Hbase,
2020
1. China Realtime Database Co., Ltd, State Grid Electric Power Institute, Nanjing 210012, China;;
Approach To Process Smart Grid Time-Serial Big Data Based On Hbase, Wang Yuan, Tao Ye, Yuan Jun, He Wei
Journal of System Simulation
Abstract: With the development of critical theories and technologies in Internet of things (IOT), more and more attentions have been focused on the IOT applications. Smart Grid is one of the typical IOT applications on which a huge number of sensors have been deployed to gather and generate time-serial data to make sense of the running states of the key devices. How to apply these data to make smart grid running secure and stable is a hot research topic. By considering the fact that smart grid is characterized by a huge number of devices, a huge amount of data and …
Data Management Of Data Processing Framework In Green Data Center,
2020
1. State Key Laboratory for Novel Software Technology, Department of Computer Science and Technology, Nanjing University, Nanjing 210023, China;
Data Management Of Data Processing Framework In Green Data Center, Zhang Xiao, Gao Yuan, Xiaoliang Wang, Yiyong Ge, Haixiang Yang, Shupeng Wan
Journal of System Simulation
Abstract: Using renewable energy in data center is an environment-friendly way to solve the problem of high energy consumption of data center. Since renewable energy is variable, delaying the jobs which has no strict deadline i a widely used strategy to maximize the usage of renewable energy. Meanwhile, turning the idle servers off can further reduce energy consumption. If the data required by the jobs to be processed are unavailable, some servers in sleep state need to be reactivated to guarantee that the data required by the jobs are available. Such operation may lead to energy waste due to the …
Simulation And Research On Surface Subsidence Caused By Abandoned Goaf Under Earthquake,
2020
1. College of Safety Science and Engineering, Liaoning Technical University, Fuxin 123000, China;;2. Key Laboratory of Mine Thermodynamic Disasters and Control of Ministry of Education, Liaoning Technical University, Fuxin 123000, China;;3. Tunnel & Underground Structure Engineering Center of Liaoning, Dalian Jiaotong University, Dalian 116028, China;;
Simulation And Research On Surface Subsidence Caused By Abandoned Goaf Under Earthquake, Tiejun Cui, Yundong Ma, Laigui Wang
Journal of System Simulation
Abstract: To understand the overlying rock strata caused by filling and abandoned goaf under earthquake, ensuring that the upper surface of subgrade is not due to the earthquake generating additional settlement which affects normal use, the goaf and the overlying rock strata were simulated with filling rate(0.85, 0.9, 0.95) and earthquake acceleration(0.2 g, 0.3 g, 0.4 g). Simulation using PFC3D as platform, modeling of complex strata, and the introduction of filling and the simulation method of earthquake, the overlying rock strata migration, stress, and the surface of the subgrade settlement characteristics were obtained. The additional earthquake surface subsidence law was …
Redundancy Allocation Optimization Design For Complex System Based On Simulation,
2020
1. Department of Technical Support Projects of Academy of Armored Forces Engineering, Beijing 100072, China;;
Redundancy Allocation Optimization Design For Complex System Based On Simulation, Haidong Du, Junhai Cao, Wu Wei, Xu Dan
Journal of System Simulation
Abstract: For the redundancy question of complex system reliability design, from the angle of product design, on the basis of sensitivity analysis of different design program, it has be proved to add redundancy design for subsystem with lower reliability and less redundancy will enhance the probability of reliability more for complex system. On the foundation of above research, the program screening simulation experiment was designed according the related restraint and optimization algorithm for redundancy design was proposed. An example of series-parallel connection system was given, obtaining the optimization design program based on Anylogic software to prove the rationality and effectiveness …
Simulation Research For Highway Maintenance Management System Based On System Dynamics,
2020
College of Architecture Engineering, Zhejiang University, Hangzhou 310058, China;
Simulation Research For Highway Maintenance Management System Based On System Dynamics, Zhang Hong, Fangmin Ren, Rongbei Zheng
Journal of System Simulation
Abstract: It is necessary to study the long-term and dynamic relationships between highway maintenance efficiency and stakeholders, thus helping decision-making on the policies and maintenance plans around the highway maintenance issue. Based on analyzing dynamics and complexities of highway maintenance system, the system dynamics model for the highway maintenance simulation system was established. This study was aimed at simulating and evaluating the long-term dynamic relationships of the interactions among the highway pavement performance, operator's maintenance plans, users' satisfaction and administration department's budget allocation scheme for a long time period. The effectiveness and application of the proposed model were demonstrated …
Research On Face Recognition Method Under Uncontrolled Illumination Variation,
2020
College of Electrical and Information, Jinan University, Zhuhai 519070, China;
Research On Face Recognition Method Under Uncontrolled Illumination Variation, Kong Rui, Zhang Bing
Journal of System Simulation
Abstract: A new face recognition algorithm is proposed with high recognition rate under uncontrolled illumination conditions. The new algorithm process face images in advance using Weber local descriptor, which means that the processed image is insensitive to illumination changing. An improved linear discriminant analysis algorithm is adopt for feature extracting, finally, nearest neighbor classifier based on Euclidean distance is applied to classify. The new algorithm is tested on Yale and The Extended Yale Database B face database respectively, in comparison with classic face recognition algorithms, the performance of the proposed method is superior to other's under uncontrolled illumination variation …
Spam Filtering Based On Variable Precision Rough Set Decision Tree,
2020
1. College of Computer Science and Engineering, Northeastern University, Shenyang 110819, China;;
Spam Filtering Based On Variable Precision Rough Set Decision Tree, Wang Jing, Xingwei Wang, Zhao Yue
Journal of System Simulation
Abstract: Email is favored by people and has become one of the most universal information communication methods, inspired by its convenience and low cost. However, E-mail has also been abused by malicious people. As a result, Internet has been polluted by spam. Spam not only wastes bandwidth resource, disrupting people's normal life and work, but also influences routine application of mail servers and poses a serious threat to Internet security. Decision tree algorithm was utilized to train extracted mail head feature information to construct a decision tree, which could be further used to filter spam. Variable precision rough set model …
Adaptive Harmony Pso Based Trusted Qos Routing Scheme,
2020
1. School of Computer Science and Engineering, Northeastern University, Shenyang 110819, China;;
Adaptive Harmony Pso Based Trusted Qos Routing Scheme, Xinxin Sun, Xingwei Wang, Huang Min
Journal of System Simulation
Abstract: With the continuous expansion of the network scale and the growing number of new applications, the Internet is faced with the challenges of security, dynamicity, heterogeneity and other problems. The emergence of new businesses brings higher demands on network quality of service (QoS) than before. At the same time, a huge amount of network security problems lead to people not being trusted on network. The trustworthiness of the networks and the QoS routing were investigated. A trusted QoS routing scheme based on adaptive harmony PSO search algorithm was proposed with QoS satisfaction degree and trustworthiness value satisfaction degree considered …
