检索结果-内蒙古大学图书馆

17th International Congress on Image and Signal Processing, BioMedical engineering and Informatics, CISP-BMEI 2024

作者： Peng, Lijuan Feng, Jiaxuan Huang, Yuxin Zhou, Hongcheng Qin, Haoyang Qiu, Feng School of Computer Science and Technology Southwest University of Science and Technology Mianyang621010 China School of Mechanical Engineering and Vehicle Engineering Beijing Institute of Technology Beijing100081 China Automation Research Institute Co. Ltd. China South Industries Group Corporation Mianyang China

ISBN: (纸本)9798331507398

In this paper, we propose a multi-dimensional insider threat detection framework (MITD), which aims to improve the accuracy of detection by comprehensively analyzing user behavior patterns. We combine statistical features and behavioral sequences and use sequence pattern recognition, graph structure information mining, and adaptive feature extraction methods. It can reveal user behavior from multiple dimensions. Then, we intelligently fuse the extracted multi-dimensional features to generate a comprehensive feature representation. It is further fused with statistical features through two strategies: concat and bitwise addition. Experimental results based on the CERT r4.2 dataset show that the MITD framework significantly improves in terms of accuracy, precision, recall, and F1 score, reaching 93.2% accuracy and 93.5% recall. The results show that the MITD framework effectively improves the performance of insider threat detection and has great potential in practical applications. © 2024 IEEE.

关键词： Feature extraction

来源：评论

学校读者我要写书评

暂无评论

Dynamic modeling and model analysis of a large industrial synchronous generator

Dynamic modeling and model analysis of a large industrial sy...

引用

International Conference on Applied Electronics, AE

作者： Attila Fodor Attila Magyar Katalin M. Hangos Department of Electrical Engineering and Information Systems University of Pannonia Veszprem Hungary Process Control Research Group Computer and Automation Research Institute Hungarian Academy of Sciences (ATOMKI) Budapest Hungary

A simple dynamic model of an industrial size synchronous generator operating in a nuclear power plant is developed in this paper based on first engineering principles. The constructed state-space model consists of a nonlinear state equation and a bi-linear output equation. It has been shown that the model is locally asymptotically stable with parameters obtained from the literature for a similar generator. The effect of load disturbances on the partially controlled generator has been analyzed by simulation using a traditional PI controller. It has been found that the controlled system is stable and can follow the set-point changes in the effective power well. The disturbance rejection of the controller is also satisfactory.

关键词： Mathematical model Equations Synchronous generators Torque Windings Rotors

来源：评论

学校读者我要写书评

暂无评论

Distributed cooperative control for parallel direct current–direct current buck converters based on multi-agent consensus theory

Distributed cooperative control for parallel direct current...

引用

作者： Zhu, Min Wang, He Cheng, Yingying Jia, Ruting Yu, Miao School of Electrical Engineering and Automation Hefei University of Technology Hefei China Engineering Technology Research Center of Industrial Automation Hefei China Department of Electrical and Computer Engineering California State University at Northridge NorthridgeCA United States China Energy Engineering Group Anhui Electric Power Design Institute Co. Ltd. Hefei China

The voltage regulation and power sharing for parallel direct current–direct current (DC–DC) buck converters is studied in this paper by using the multi-agent consensus theory. At the first step, the control problem of parallel DC–DC buck converters is modeled as the consensus problem of multi-agent system. Different from the most existing algorithms for parallel DC–DC buck converters, a new distributed cooperative control algorithm is proposed to implement plug-and-play and to enhance the system's flexibility. For the current-loop, a finite-time control algorithm is employed to improve the dynamic response for the current tracking. The rigors stability analysis is given and the simulation result is presented. © 2021 Chinese Automatic control Society and John Wiley & Sons Australia, Ltd.

关键词： Multi agent systems

来源：评论

学校读者我要写书评

暂无评论

Bayesian decision-theoretic causation analysis for gas explosion

Bayesian decision-theoretic causation analysis for gas explo...

引用

2006 IEEE International Conference on Mechatronics and automation, ICMA 2006

作者： Cai, Linqin Sun, Yining Mei, Tao Zuchang, Ma Department of Automation Chinese Academy of Sciences University of Science and Technology of China Hefei China Institute of Computer Application Chinese Academy of Engineering Physics Mianyang China Center for Biomimetic Sensing and Control Research Institute of Intelligent Machine Chinese Academy of Sciences Hefei China

ISBN: (纸本)1424404665

Frequent mine gas incident in china fully shows there must be many undiscovered essential factors in all previous gas incident investigations. Exploring a new analysis approach is vital to prevent and control mine gas emergency. A Bayesian decision-theoretic causation analysis method was introduced to study the mine gas incident. A typical gas explosion case was explained. The interaction law of human, machine, environment, and management factors causing mine gas incident was discussed. The evolution process of the connotative factors from the uncertain state to the certain state was discovered, and the relationships between the external factors and the internal factors were revealed. © 2006 IEEE.

关键词： Decision trees

来源：评论

学校读者我要写书评

暂无评论

Torque Ripple Reduction in PMSM Based on Three-Closed-Loop Vector control 17th

Torque Ripple Reduction in PMSM Based on Three-Closed-Loop V...

引用

17th Annual Conference of China Electrotechnical Society, CES 2022

作者： Fu, Menghu Zhang, Qian Wang, Qunjing Yang, Heng Chen, Dijiang School of Electrical Engineering and Automation Anhui University Anhui Hefei China National Engineering Laboratory of Energy-Saving Motor and Control Technology Anhui University Anhui Hefei China Power Quality Engineering Research Center Ministry of Education Anhui University Anhui Hefei China 38th Research Institute of CLP Group Anhui Hefei China

ISBN: (纸本)9789819903566

In order to solve the problems of large torque fluctuation and serious stator flux and current distortion of permanent magnet synchronous motor (PMSM) under direct torque control (DTC), the three-closed-loop vector control of PMSM torque reduction method is proposed. Firstly, the basic principles of traditional DTC are introduced. Secondly, the space voltage vector pulse width modulation (SVPWM) is used to replace the switching table search module of the traditional DTC to obtain a proper space voltage vector. Finally, the tracking response under the position signal is analyzed to verify the viability of the proposed control strategy. The simulation results show that the torque reduction technique based on triple closed-loop vector control of PMSM can increase the motor starting torque to 28.97 N · m, the motor starting speed is faster, the rising time is shortened, and the overshoot of speed tracking is reduced to 3.37%, which greatly improves the tracking accuracy, significantly improves the current distortion and suppresses the torque ripple. © 2023, Beijing Paike Culture Commu. Co., Ltd.

关键词： Vectors

来源：评论

学校读者我要写书评

暂无评论

Blending for H∞ performance: a group theoretic approach

引用

IFAC-PapersOnLine 2015年第14期48卷 186-191页

作者： Z. Szabò J. Bokor F. Schipp Institute for Computer Science and Control Hungarian Academy of Sciences Budapest Kende u. 13-17 Hungary Institute for Computer Science and Control Hungarian Academy of Sciences Hungary MTA-BME Control Engineering Research Group

In order to design efficient algorithms that work on the set of controllers that fulfill a given property, e.g., stability or a norm bound, it is important to have an operation that preserves that property, i.e., a suitable blending method. Concerning stability, a traditional approach is to use the Youla parametrization and the corresponding parameters as a starting point. While this method guarantees stabilizability as the invariant property for the fairly large class of strictly proper plants, there are also other solutions to the problem. The authors already provide a detailed analysis for feedback stability placing the controller blending problem in a general setting by pointing to the basic global geometric structures that are related to well-posedness and feedback stability. In this paper these efforts are continued and the group structure corresponding to performance problems, e.g., those related to a suboptimal H ∞ design, is presented. Besides its educative value the presentation provides a possible tool for the algorithmic development.

关键词： controller parametrisation controller blending performance guarantee

来源：评论

学校读者我要写书评

暂无评论

Modeling and analyzing multi-agent task plans for intelligent virtual training system using petri nets

Modeling and analyzing multi-agent task plans for intelligen...

引用

6th World Congress on Intelligent control and automation, WCICA 2006

作者： Linqin, Cai Tao, Mei Yining, Sun Lei, Sun Zuchang, Ma Department of Automation University of Science and Technology of China Chinese Academy of Sciences Hefei China Institute of Computer Application Chinese Academy of Engineering Physics Mianyang China Center for Biomimetic Sensing and Control Research Institute of Intelligent Machine Chinese Academy of Sciences Hefei China

ISBN: (纸本)1424403324

Integrated virtual reality with Intelligent Tutoring System, a multi-agent architecture was proposed for intelligent virtual training system (IVTS) for mine safety training. In order to make sure IVTS agent's task plans are reliable and adaptive, a Petri nets-based declarative method was applied to model the virtual training task planning knowledge, which was represented as task planning knowledge Petri nets (TP-PNets), and an algorithm was implemented to construct TP-PNets. Then, Hierarchy Colored Petri Nets (HCPN) was used to model multi-agent task planning behaviors for IVTS, and simulation and message sequence chart was used to analyze and verify the agent task planning HCPN model. ©2006 IEEE.

关键词： Intelligent systems

来源：评论

学校读者我要写书评

暂无评论

The application of discrete particle swarm optimization in attitude determination

The application of discrete particle swarm optimization in a...

引用

2010 WASE International Conference on Information engineering, ICIE 2010

作者： Chang, Chuanwen Mao, Wenshen Mao, Na Gu, Jing No.28 Research Institute China Electronics Technology Group Corporation Nanjing 210007 China School of Computer and Information Hefei University of Technology Hefei 230009 China Engineering Research Center of Safety Critical Industrial Measurement and Control Technology Ministry of Education Hefei 230009 China

ISBN: (纸本)9780769540801

Attitude determination with navigation satellites is a key technology in aviation, marine and land navigation. In the method based on carrier phase difference, the double difference integer ambiguity solving is important and difficult. This paper adopts Discrete Particle Swarm Optimization to search for the optimal integer ambiguity directly without the decorrelation of ambiguity, and calculates the baseline vector consequently. This method can improve the efficiency of integer ambiguity solving, so as to be applied in dynamic attitude determination. The experimental results show the validity of this method. © 2010 IEEE.

关键词： Particle swarm optimization (PSO)

来源：评论

学校读者我要写书评

暂无评论

Robust control of Feeding Speed for Coal Mine Tunnel Drilling Machines 25

Robust Control of Feeding Speed for Coal Mine Tunnel Drillin...

引用

25th IEEE International Conference on Industrial Technology, ICIT 2024

作者： Liu, Xiao Chen, Luefeng Wu, Min Cao, Weihua Lu, Chengda Pedrycz, Witold School of Automation China University of Geosciences Wuhan China School of Automation The Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems The Engineering Research Center of Intelligent Technology for Geo-Exploration Wuhan430074 China University of Alberta Department of Electrical and Computer Engineering EdmontonABT6G 2R3 Canada Systems Research Institute Polish Academy of Sciences Warsaw00-901 Poland Istinye University Department of Computer Engineering Sariyer Istanbul34396 Turkey

Changes in coal seam hardness cause fluctuations in the feed resistance at the drill bit during the drilling process, leading to unstable feeding speed. This paper proposes a robust dynamic output feedback controller to suppress disturbances caused by the variations in coal seam hardness in the feed system. Firstly, an unknown parameter measuring coal seam hardness is introduced, and an uncertain model of the feeding system is established based on the finite element model of the drill string. By designing weighted functions based on industrial field requirements and constructing a generalized plant, the controller achieves loop shaping, reducing the low-frequency impact of coal seam hardness variations on the feed system and suppressing the systems resonance peak. Simulation results demonstrate that the controller effectively suppresses parameter variations and external disturbances caused by changes in coal seam hardness, achieving stable control of the drilling speed. © 2024 IEEE.

关键词： Robust control

来源：评论

学校读者我要写书评

暂无评论

research on geomembrane leakage detection method based on quadruped robot

Research on geomembrane leakage detection method based on qu...

引用

2024 China automation Congress, CAC 2024

作者： Zhang, Pengcheng Hu, Ningning Wang, Xiao Xi, Qingbiao Zhao, Haohao Wu, Xingchen Qin, Linfeng Yuan, Dongli Investigation & Testing Research Institute Shanghai Investigation Design & Research Institute Co. Ltd. Shanghai China System Department 2 Xi'an ASN Technology Group Co. Ltd Xi'an China School of Electronic and Control Engineering Chang'an University Xi'an China School of Automation Northwestern Polytechnical University Xi'an China

ISBN: (纸本)9798350368604

Aiming at the problem of leakage detection of seepage control geomembranes in landfills, a fully autonomous dipole method detection system based on a quadruped robot equipped with a dipole sensor is designed. The feasibility and superiority of using a quadruped robot are analyzed on the basis of the detection principle of the dipole method. Due to the problems existing in the process of upgrading the artificial static detection to autonomous dynamic detection, a dynamic detection method based on a quadruped robot is designed while the structure construction of the dipole method on the quadruped robot is completed. The experimental results show that the efficiency of geomembrane leakage detection can be improved with detection system method employed in this paper. © 2024 IEEE.

关键词： Geomembranes

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：