检索结果-内蒙古大学图书馆

International Conference on Communications, Signal Processing, and Systems, CSPS 2023

作者： Qin, Zhuanping Tao, Xiaoyun Guo, Tinghang Sun, Wenhao Zhao, Zhuangzhuang School of Automation and Electrical Engineering Tianjin University of Technology and Education 1310 Dagu South Road Hexi District Tianjin300222 China Tianjin Key Laboratory of Information Sensing and Intelligent Control Tianjin300222 China

ISBN: (纸本)9789819975556

In order to provide a more scientific rehabilitation training plan for patients with lower limb paralysis caused by illness or accidents when they train independently or at home, a lower limb rehabilitation training system with myoelectric assessment was hereby designed to improve the therapeutic effect and to reduce the difficulty of nursing care. The collected electromyographic signals of the target muscle surface after homogenization and standardization were used as the evaluation standard, and suitable training plans were given for different muscle functional states of different patients, which were combined with the mobile terminal to realize the visualization of data and training guidance. According to the repeated experiments, the accuracy of the judgment of the functional status of the target muscle of the patient could reach more than 85% without resistance, and the judgment accuracy was increased to more than 92% after adding resistance appropriately. The design can directly feedback and guide rehabilitation training through EMG and visual interface, which will further improve the effectiveness and convenience of training for patients with lower limb dysfunction. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Muscle

来源：评论

学校读者我要写书评

暂无评论

SMALL-SIGNAL STABILLITY ANALYSIS OF FLUX-controlLED GRID-FORMING DFIG UNDER WEAK GRID 20

SMALL-SIGNAL STABILLITY ANALYSIS OF FLUX-CONTROLLED GRID-FOR...

引用

20th International Conference on AC and DC Power Transmission 2024, ACDC 2024

作者： Wang, Wenhe Hu, Yufei Li, Weibing Hua, Xiaojun Zha, Xiaoming Tian, Zhen School of Electrical Engineering and Automation Wuhan University Wuhan China Laboratory of Hydro-Wind-Solar Multi-energy Control Coordination Wuhan China Institute of Science and Technology China Three Gorges Corporation Beijing China

ISBN: (纸本)9781837242672

With the continuous increase of global wind power installed capacity, the modern power system gradually shows the characteristics of weak damping, low inertia, and weak anti-interference ability. Aiming at the normal grid-connected wind tur-bine under weak grid conditions, the small signal stability of the flux-controlled grid-forming DFIG is analysed. Firstly, the small-signal model of the flux-controlled grid-forming DFIG is constructed based on the flux-controlled virtual synchronous generator control (VSG). Then, the eigenvalue analysis method is used to investigate the influence of different operating conditions and controller parameters on the small-signal stabilization of system. Besides, the dominant factors of low-frequency oscillatory modes are analysed based on the participation factor matrix. Finally, the safety and stability boundaries of each influencing factor are calculated by oscillation modal analysis, which provides guidance for the parameter design of the DFIG underweak grid. © The Institution of engineering & Technology 2024.

关键词： Eigenvalues and eigenfunctions

来源：评论

学校读者我要写书评

暂无评论

Fault Current Calculation for DFIGs Under Complete Fault-Ride Through Strategies

Fault Current Calculation for DFIGs Under Complete Fault-Rid...

引用

2024 IEEE IAS Industrial and Commercial Power System Asia, I and CPS Asia 2024

作者： Chen, Dawei Li, Canbing Liu, Sheng Liu, Xubin Liu, Jianzhe Fan, Feilong Wei, Juan Shanghai Jiao Tong University Key Laboratory of Control of Power Transmission and Conversion Shanghai China School of Automation Central South University Changsha China College of Electrical and Information Engineering Hunan University Changsha China

ISBN: (纸本)9798350352290

The fault current characteristic of doubly fed induction generators (DFIGs) is determined by both the external grid voltage and the internal rotor voltage. However, there are multiple fault-ride through strategies employed by DFIGs. In this paper, a fault current calculation method for DFIGs under complete fault-ride through strategies is proposed. The transient behavior of the DFIG is described by the state space model in which the stator voltage and rotor voltage are selected as input signals. The internal dynamics of the DFIG is modeled by the rotor voltage which is controlled by multiple strategies in sequence. Comparative case studies are carried out to demonstrate the accuracy of the proposed method. © 2024 IEEE.

关键词： Asynchronous generators

来源：评论

学校读者我要写书评

暂无评论

Safe Adaptive Dynamic programming-Based Formation control and Collision Avoidance of Multi-UAV System 42

Safe Adaptive Dynamic Programming-Based Formation Control an...

引用

42nd Chinese control Conference, CCC 2023

作者： Yu, Hui Dou, Liqian Zhang, Ruilong Zhang, Xiuyun Cai, Siyuan Tang, Yifan School of Electrical Engineering and Automation Tianjin University Tianjin300072 China Beijing Aerospace Automatic Control Institute Beijing100039 China AVIC xi'An Flight Automatic Control Research Institute Xi'an710065 China

ISBN: (纸本)9789887581543

In this study, a safe adaptive dynamic programming-based method is proposed for the formation control and collision avoidance problem of the multi-UAV systems with the known upper bound of external disturbances. For the position subsystem, an adaptive dynamic programming algorithm is established, using a designed cost function that manages to include uncertainty, tracking error, control influence, and barrier functions. Through the critic network structure with a unique weight learning criterion, the optimal cost function and control strategies are obtained. After attitude resolution, an integral back-stepping controller is established for the attitude subsystem. The simulation experiment is designed to verify the effectiveness of the algorithm. © 2023 Technical Committee on control Theory, Chinese Association of automation.

关键词： Collision avoidance

来源：评论

学校读者我要写书评

暂无评论

Static-feedback guaranteed cost control for linear systems with outage and loss of effectiveness actuator faults

引用

Journal of control and Decision 2022年第4期9卷 407-419页

作者： Chun-Hua Xie Zhe Li Yanli Zhou School of Electrical and Automation Engineering East China Jiaotong UniversityNanchangPeople’s Republic of China Key Laboratory of Advanced Control&Optimization of Jiangxi Province NanchangPeople’s Republic of China cCollege of Electrical and Information Engineering Hunan UniversityChangshaPeople’s Republic of China

This paper investigates the static-feedback guaranteed cost control problem for linear systems with actuator faults including outage and loss of *** the actuator redundancy condition,theoretical analysis shows that a static-feedback guaranteed cost controller can always be well designed to ensure that the resulting closed-loop system is stable with desirable quadratic *** particular,the feedback gain can be determined through the solution of a modified algebraic Riccati ***,extension to the system with uncertainties is further *** with the dynamic feedback controller,the static-feedback controller consists only of logical gates/modules and it does not require any memory element,and hence it is simplest in a design *** from the existing results,the severe and timevarying actuator outage faults can be handled very well by the proposed control ***,simulation on a linearised reduced-order aircraft system is provided for verifying the theoretical results.

关键词： Static-feedback guaranteed cost control linear systems actuator outage faults algebraic Riccati equation

来源：评论

学校读者我要写书评

暂无评论

Dispatch of a Coal Mine-Integrated Energy System:Optimization Model with Interval Variables and Lower Carbon Emission

引用

Tsinghua Science and Technology 2024年第5期29卷 1441-1462页

作者： Hejuan Hu Xiaoyan Sun Bo Zeng Dunwei Gong Yong Zhang Patrick Nyonganyi Henerica Tazvinga School of Information and Control Engineering ChinaUniversity of Mining and TechnologyXuzhou 221116China Laboratory of Alternate Electrical PowerSystem with Renewable Energy Sources North ChinaElectric Power UniversityBeijing 102206China School of Information Science andTechnology Qingdao University of Science and TechnologyQingdao 266061China Department of Automation Tsinghua UniversityBeijing 100084China South Africa WeatherService Pertoria 0001South Africa

In the coal mining process,a large amount of Coal Mine-Associated energy(CMAE),such as coal mine methane and underground wastewater,is *** on the modeling and optimization dispatching of a Coal Mine-Integrated Energy System(CMIES)with CMAE effectively saves energy and reduces carbon *** has great uncertainties owing to the affections of the hydrogeology conditions and mining *** addition,thermal loads have high comfort requirements in mines,which brings great challenges to the optimization dispatching of ***,this paper studies the architecture and solution of CMIESs with a flexible thermal load and source-load ***,to effectively improve the electric and thermal conversion efficiency,the architecture of CMIES,including a concentrating solar power station,is ***,for the scheduling model with bilateral uncertainty,the interval representation method with interval variables is proposed,and a multi-objective scheduling model based on the interval variables and flexible thermal load is ***,we propose a solution method for the model with interval variables.A case study is conducted to demonstrate the performance of our model and method for lowering carbon emissions and cost.

关键词： Integrated Energy Systems(IESs) Coal Mine-Integrated Energy Systems(CMIES) bilateral uncertainties concentrating solar power station interval optimization

来源：评论

学校读者我要写书评

暂无评论

Optimizing Parameter Design with Frequency and Clock Drift Constraints in Microgrids∗ 63

Optimizing Parameter Design with Frequency and Clock Drift C...

引用

63rd IEEE Conference on Decision and control, CDC 2024

作者： Yu, Chang Lu, Xiaoqing Wuhan University of Science and Technology School of Information Science and Engineering Wuhan430081 China Huazhong University of Science and Technology Ministry of Education Key Laboratory of Image Processing and Intelligent Control Wuhan430074 China Wuhan University School of Electrical Engineering and Automation Wuhan430000 China

ISBN: (纸本)9798350316339

Microgrids subjected to secondary cooperative control encounter significant challenges, including operational constraints and clock drifts, adversely affecting their stability and efficiency. This paper provides conditions that assure optimal microgrid performance in both transient and steady-state scenarios, focusing on the effects of clock drifts and fluctuations in load. Furthermore, we introduce a novel approach for designing secondary control parameters, specifically engineered to minimize steady-state discrepancies attributable to clock drifts while ensuring adherence to standards for transient operations. Comprehensive experimental validations corroborate the effectiveness of our proposed solutions. © 2024 IEEE.

关键词： Microgrids

来源：评论

学校读者我要写书评

暂无评论

An investigation of CO generation path upon loading coal from perspective of macromolecular simulation

引用

Environmental Science and Pollution Research 2024年第44期31卷 56008-56023页

作者： Jin, Zhengjiao Zhang, Jian Wang, Jing Si, Guangyao Shi, Xianlei Li, Yao Cai, Maolin College of Safety Science and Engineering Henan Polytechnic University Jiaozuo454003 China Key Laboratory of Gas Geology and Gas Control Henan Polytechnic University Jiaozuo454003 China State Collaborative Innovation Center of Coal Work Safety and Clean-Efficiency Utilization Henan Polytechnic University Jiaozuo454003 China School of Electrical Engineering and Automation Henan Polytechnic University Jiaozuo454003 China School of Minerals and Energy Resources Engineering University of New South Wales SydneyNSW2052 Australia College of Chemistry and Chemical Engineering Henan Polytechnic University Jiaozuo454003 China

CO is a hazardous and pollutant gas that can be produced in many scenarios of coal-related operations. The study mainly investigated CO production process and mechanism when coal is subject to external forces. The effects of coal type, particle size, temperature, and inlet atmosphere on CO production from coal body fragmentation were investigated through coal loading experiments. Materials Studio software was used to carry out coal macromolecular mechanics simulation and molecular dynamics simulation, and the gas production mechanism of coal under loading was explored at the molecular level. It was found that under air atmosphere, the low degree of deterioration, small particle size, and elevated temperature are all more likely to cause coal samples to fragment and decompose to produce CO. The carbonyl group in the molecular structure of coal is shed or broken free radical fragments react with oxygen which may lead to CO formation. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Free radicals

来源：评论

学校读者我要写书评

暂无评论

Hemodynamic Analysis and Diagnosis Based on Multi-Deep Learning Models

引用

Fluid Dynamics & Materials Processing 2023年第6期19卷 1369-1383页

作者： Xing Deng Feipeng Da Haijian Shao School of Automation Key Laboratory of Measurement and Control for CSEMinistry of EducationSoutheast UniversityNanjing210096China School of Computer Jiangsu University of Science and TechnologyZhenjiang212003China Department of Electrical and Computer Engineering University of NevadaLas Vegas89154USA

This study employs nine distinct deep learning models to categorize 12,444 blood cell images and automatically extract from them relevant information with an accuracy that is beyond that achievable with traditional *** work is intended to improve current methods for the assessment of human health through measurement of the distribution of four types of blood cells,namely,eosinophils,neutrophils,monocytes,and lymphocytes,known for their relationship with human body damage,inflammatory regions,and organ illnesses,in particular,and with the health of the immune system and other hazards,such as cardiovascular disease or infections,more in *** results of the experiments show that the deep learning models can automatically extract features from the blood cell images and properly classify them with an accuracy of 98%,97%,and 89%,respectively,with regard to the training,verification,and testing of the corresponding datasets.

关键词： Blood cell analysis deep learning models classification-detection

来源：评论

学校读者我要写书评

暂无评论

Dynamic Object Tracking Based on Triplet Relationship Guided Sampling Consensus Algorithm 3

Dynamic Object Tracking Based on Triplet Relationship Guided...

引用

2023 3rd International Conference on Computer, Remote Sensing and Aerospace, CRSA 2023

作者： Zhou, Jiaxing Yao, Youxin Chen, Xiang Guo, Hanlin Huang, Qixuan School of Electrical Engineering and Automation Xiamen University of Technology Xiamen361024 China Xiamen Key Laboratory of Frontier Electric Power Equipment and Intelligent Control Xiamen361000 China Shanghai Satellite Engineering Institute Shanghai201109 China

Compared with the traditional methods based on the prediction of moving object trajectory, the method based on image registration has the advantage of not relying on the object motion equation to track the object. However, in the case of a large number of outliers, the image matching method has the defects of inadequate filtering of outliers or erroneous filtering of incomers due to the limitations of spatial constraints of feature matching pairs, which will make the tracking of flying objects inaccurate or impossible. During the flight, the object may be in a similar background and the image shooting angle is different, which makes the object imaging angle change, resulting in a large number of outlier interference. Because of the above situation, this paper adopted an improved TRESAC algorithm based on RANSAC, which used a feature matching method based on a triplet relationship to effectively filter outliers and then adopted an initial data subset selection strategy to increase its robustness. Experimental results show that the TRESAC algorithm can filter outliers quickly and accurately, and the object is still tracked effectively under the condition of similar background and pose change. © Published under licence by IOP Publishing Ltd.

关键词： Statistics

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：