检索结果-内蒙古大学图书馆

4th International Conference on Geo-Informatics in Resource Management and Sustainable Ecosystem, GRMSE 2016

作者： Liu, Xuxun Xin, Hongyan College of Electronic and Information Engineering South China University of Technology Guangzhou510641 China Key Laboratory of Autonomous Systems and Network Control Ministry of Education South China University of Technology Guangzhou510641 China

ISBN: (纸本)9789811039652

Uneven clustering is one of the feasible methods for energy hole avoidance in a wireless sensor network (WSN). Usually all weight in clustering and routing, such as residual energy of a sensor, distance between different nodes, and so on, are invariable all the time. In fact, with the running of the network, the relative importance of all factors makes the change. A variable weight based clustering approach (VWCA) is composed in this paper for energy hole avoidance in WSNs. The characteristics of the paper are to adjust the weight of residual energy of a sensor and the distance between different nodes. Simulation results show that VWCA does better in energy hole avoidance among all sensor nodes and achieves an obvious improvement on the network lifetime. © Springer Nature Singapore Pte Ltd. 2017.

关键词： Sensor nodes

来源：评论

学校读者我要写书评

暂无评论

Layout Optimization of Large-scale Urban Water Supply network Pressure Measuring Point Distribution Using Genetic Algorithm 36

Layout Optimization of Large-scale Urban Water Supply Networ...

引用

第36届中国控制会议

作者： Huayi Luo Jingcheng Wang Xiaocheng Li Jiayu Zhu Department of Automation Shanghai JiaoTong Universityand Key Laboratory of System Control and Information ProcessingMinistry of Education of China Autonomous Systems and Intelligent Control International Joint Research Center Xi'an Technological University

ISBN: (纸本)9781538629185

In the urban water supply system, the location and quantity of the pressure monitoring nodes play a significant role for the monitoring effect and the response warning of the pipe burst. However, most installation of pressure monitoring nodes are based on human experience, which cannot totally present the whole water supply system condition. In view of the unreasonable layout of pressure monitoring nodes, this paper presents a solution Integrating sensitivity analysis, genetic algorithm, hydraulic model calculation and pipe network topology. Then optimize the number of pressure monitoring nodes by considering the amount of water covered and the number of associated nodes. This solution offers a relatively accurate and reasonable way to optimize the layout of pressure monitoring nodes in large-scale site selection, presenting better comprehensive effect compared with previous layout. To a certain extent, this optimized layout of pressure monitoring nodes reduce the impact of human factors and improve the monitoring of water supply network operation results.

关键词： pressure measuring point layout optimization genetic algorithm urban water supply network

来源：评论

学校读者我要写书评

暂无评论

Sampled-Data Output Voltage Practical Tracking for Uninterruptible Power Supply systems with Transmission Delays

Sampled-Data Output Voltage Practical Tracking for Uninterru...

引用

2024 International Annual Conference on Complex systems and Intelligent Science, CSIS-IAC 2024

作者： Jia, Mengqi Liu, Wei Key Laboratory of Autonomous Systems and Networked Control of Ministry of Education School of Automation Science and Engineering South China University of Technology Guangzhou China

ISBN: (纸本)9798331504755

This paper aims at addressing output voltage practi-cal tracking problem for uninterruptible power supply systems by devising an aperiodic sampled-data control scheme. We consider the presence of transmission delay in the input channel. We demonstrate that the problem can be solved by a predictor-based sampled-data dynamic output feedback control law. Moreover, the tracking error can converge to a prescribed neighborhood of the origin. © 2024 IEEE.

关键词： Delay control systems

来源：评论

学校读者我要写书评

暂无评论

Command Filtered backstepping-based Flight control of Unmanned Helicopters with Disturbance Observers 34

Command Filtered backstepping-based Flight Control of Unmann...

引用

第三十四届中国控制会议

作者： HE Yuebang PEI Hailong ZHOU Hongbo School of Information Engineering Wuyi University Key Laboratory of Autonomous Systems and Networked Control Ministry of Education South China University of Technology Hunan Institute of Science and Technology

ISBN: (纸本)9781467374439

A Command filtered backstepping control augmented with disturbance observer(CFBC+DO) is presented to deal with the problem of robust trajectory tracking for unmanned helicopters. The main work relies on the way to reduce the control calculation works and compensate the disturbances acting on the helicopter, which are the main reason of causing the tracking errors. Firstly, a nonlinear DO is presented to estimate the lumped disturbances which are composed of external disturbances and neglected model uncertainties. Then a CFBC is designed for the helicopter's trajectory tracking. Since the CFBC uses a command filter to calculate the derivatives of the virtual control signal, instead of using the analytical differentiation, it significantly simplifies the backstepping implementation. Furthermore, by integrating the estimated disturbances into CFBC, the global exponential stability of the compensated tracking errors are proved by using Lyapunov theory. At last, simulation results illustrate the efficiency of the proposed method.

关键词： Command Filtered Backstepping,Disturbance Observer,Trajectory Tracking,Unmanned Helicopter,Lyapunov Theory

来源：评论

学校读者我要写书评

暂无评论

Semi-Global Leader-Following Consensus for Second-Order Nonlinear Multi-Agent systems via Asynchronous Sampled-Data control

Semi-Global Leader-Following Consensus for Second-Order Nonl...

引用

2022 IEEE International Conference on Unmanned systems, ICUS 2022

作者： He, Quangui Liu, Wei School of Automation Science and Engineering South China University of Technology Key Laboratory of Autonomous Systems and Networked Control Ministry of Education Guangzhou China

ISBN: (数字)9781665484565

ISBN: (纸本)9781665484565

The sampled-data leader-following consensus problem for a class of uncertain second-order nonlinear multi-agent systems is investigated in this article, where the region of attraction is semi-global. The system model contains the parameter uncertainties. In such a scenario, we construct a distributed state feedback control law by using asynchronously sampled data. Based on rigorous stability analysis of the closed-loop system, a maximum allowable value of sampling periods is given to guarantee the exact consensus. © 2022 IEEE.

关键词： Multi agent systems

来源：评论

学校读者我要写书评

暂无评论

Robust Output Voltage Tracking with Prescribed Performance for Single-Phase UPS Inverters

Robust Output Voltage Tracking with Prescribed Performance f...

引用

2024 China Automation Congress, CAC 2024

作者： Luo, Jialei Liu, Wei Key Laboratory of Autonomous Systems and Networked Control Ministry of Education School of Automation Science and Engineering South China University of Technology Guangzhou China

ISBN: (纸本)9798350368604

This paper deals with the robust output voltage tracking problem with prescribed performance for single-phase voltage source uninterruptible power supply inverters. We construct two linear internal models to reproduce the steady-state information, based on which we transform our problem into the robust stabilization problem with prescribed performance of an augmented system. Then, we incorporate a novel error transformation into the existing framework for the robust output regulation problem to design a stabilization controller, based on which we synthesize our control law to make the tracking error converge to zero asymptotically while always satisfying the prescribed performance. © 2024 IEEE.

关键词： Uninterruptible power systems

来源：评论

学校读者我要写书评

暂无评论

Active Disturbance Rejection control Design for the Power on Ultrasonic Transducer 41

Active Disturbance Rejection Control Design for the Power on...

引用

第41届中国控制会议

作者： Fuchun Liu Bin Li Haixing Deng Ming Zeng School of Automation Science and Engineering South China University of Technology Key Laboratory of Autonomous Systems and Networked ControlMinistry of Education Unmanned Aerial Vehicle Systems Engineering Technology Research Center of Guangdong

ISBN: (数字)9789887581536

ISBN: (纸本)9781665482561

The Ultrasonic scalpel has good medical characteristics and is widely used in the medical *** the core component of the ultrasonic scalpel system,the ultrasonic transducer usually needs to control its power for good cutting ***,the mathematical model of the ultrasonic transducer is complex and easily influenced by the load and ***,it is challenging to design a power controller that satisfies all situations with different temperatures and *** this paper,we will analyze the equivalent model of the ultrasonic transducer and simplify the controlled object ***,an ADRC controller,which has the advantage of placing less emphasis on the mathematical model and compensating for the disturbances,will be ***,the performance of the ADRC control system will be tested according to a simulation experiment.

关键词： ultrasonic transducer power control ADRC first-order system

来源：评论

学校读者我要写书评

暂无评论

Non-Overshooting Output Regulation of Linear systems via Positive systems Method 6

Non-Overshooting Output Regulation of Linear Systems via Pos...

引用

6th International Conference on Electronic Engineering and Informatics, EEI 2024

作者： Deng, Xuanjin Liu, Wei School of Automation Science and Engineering South China University of Technology Key Laboratory of Autonomous Systems and Networked Control of Ministry of Education Guangzhou China

ISBN: (纸本)9798350353594

This paper investigates the non-overshooting output regulation problem by using the analysis and synthesis approaches of positive systems. Combining linear programming with gain matrix decomposition technique, a state feedback control law with two different kinds of design parameters is designed to ensure the stability and positivity of the corresponding closed-loop systems, which leads to the solvability of the non-overshooting output regulation problem of linear systems. Finally, an example is given to verify the effectiveness of the proposed design. © 2024 IEEE.

关键词： State feedback

来源：评论

学校读者我要写书评

暂无评论

Neural-adaptive control of single-master-multiple-slaves teleoperation for coordinated multiple mobile manipulators with time-varying communication delays and input uncertainties

引用

IEEE Transactions on Neural networks and Learning systems 2013年第9期24卷 1400-1413页

作者： Li, Zhijun Su, Chun-Yi Key Laboratory of Autonomous System and Network Control College of Automation Science and Engineering South China University of Technology Guangzhou 510641 China Concordia University Montreal QC H3G 1M8 Canada

In this paper, adaptive neural network control is investigated for single-master-multiple-slaves teleoperation in consideration of time delays and input dead-zone uncertainties for multiple mobile manipulators carrying a common object in a cooperative manner. Firstly, concise dynamics of teleoperation systems consisting of a single master robot, multiple coordinated slave robots, and the object are developed in the task space. To handle asymmetric time-varying delays in communication channels and unknown asymmetric input dead zones, the nonlinear dynamics of the teleoperation system are transformed into two subsystems through feedback linearization: local master or slave dynamics including the unknown input dead zones and delayed dynamics for the purpose of synchronization. Then, a model reference neural network control strategy based on linear matrix inequalities (LMI) and adaptive techniques is proposed. The developed control approach ensures that the defined tracking errors converge to zero whereas the coordination internal force errors remain bounded and can be made arbitrarily small. Throughout this paper, stability analysis is performed via explicit Lyapunov techniques under specific LMI conditions. The proposed adaptive neural network control scheme is robust against motion disturbances, parametric uncertainties, time-varying delays, and input dead zones, which is validated by simulation studies. © 2012 IEEE.

关键词： Remote control

来源：评论

学校读者我要写书评

暂无评论

Graph Data Augmentation based on Adaptive Graph Convolution for Skeleton-based Action Recognition 9

Graph Data Augmentation based on Adaptive Graph Convolution ...

引用

9th IEEE International Conference on Computer Science and network Technology, ICCSNT 2021

作者： Yu, Lubin Tian, Lianfang Du, Qiliang School of Automation Science And Engineering South China University And Technology Guangzhou China Zhuhai China Key Laboratory of Marine Environmental Survey Technology And Application Ministry of Natural Resources Guangzhou China Key Laboratory of Autonomous Systems Network Control of Ministry of Education Guangzhou China

ISBN: (纸本)9781665443647

Recently, action recognition based on graph data has received widespread attention. Graph convolutional neural networks need a large amount of graph data support. Therefore, graph data augmentation has significant research value. Existing graph data augmentation methods are generally based on graph structure or graph node features to add or remove graph edges, leading to problems in generality and effectiveness. To improve the above issues, this paper utilizes adaptive graph convolution to design an algorithm that obtains the optimal graph connection for graph data augmentation as graph convolution proceeds, which greatly improves the generalization and effectiveness. The results on NTU-RGBD and Kinetics-Skeleton datasets for skeleton-based action recognition prove that our proposed method reveals better results than existing methods. © 2021 IEEE.

关键词： Convolution

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：