检索结果-内蒙古大学图书馆

5th International Conference on System Reliability and Safety engineering, SRSE 2023

作者： Liu, Weiming Chen, Cen Wang, Zhifei Zhang, Xiaosheng Zhai, Guofu Zheng, Wei Engineering & Automation Harbin Institute of Technology Department of Electrical Harbin China Beijing Aerospace Automatic Control Institute Beijing China

ISBN: (纸本)9798350305944

The energy meter is a widely used digital-analog electronic system. However, metering accuracy is inevitably influenced by factors such as ambient temperature, load current, and component tolerance. This paper introduces a method utilizing digital twin models to analyze the consistency of metering accuracy in a new single-phase smart meter prototype. An electro-thermal coupling model incorporating a temperature compensation algorithm is established, and the metering accuracy is solved using a surrogate model. By employing the Monte Carlo method, a batch of product samples is generated to determine the impact of varying ambient temperature and load current conditions on the metering accuracy's consistency within the maximum operating range. The results of this study provides a valuable foundation for robust design and reliability optimization of the energy meter. © 2023 IEEE.

关键词： Smart meters

来源：评论

学校读者我要写书评

暂无评论

Cahn-Hilliard Equation in Noise Reduction and Concentration-Dependent Heat Transfer

引用

Defect and Diffusion Forum 2024年 436卷 127-136页

作者： Bandeira, João Gabriel Piraine Kurz, Gustavo Braz Buske, Daniela de Quadros, Régis Sperotto Weymar, Guilherme Jahnecke Furtado, Igor da Cunha Control and Automation Engineering Federal University of Pelotas RS Brazil Postgraduate Program in Mathematical Modeling Federal University of Pelotas RS Brazil Sul-Rio-Grandense Federal Institute of Education Science and Technology RS Brazil

The Cahn-Hilliard equation, known for describing the evolution of interfaces in multicomponent systems, can also be employed to noise reduction in mathematical functions and concentration-dependent heat transfer simulations. This work presents a finite difference method discretization of the Cahn-Hilliard equation and explores its applications. For noise reduction, three different noisy functions are simulated, demonstrating effective recovery of original functions despite significant noise levels. In heat transfer simulations, three initial temperature distributions are explored with concentration-dependent thermal diffusivity. Results show that concentration significantly affects thermal diffusivity and heat propagation, leading to non-uniform temperature distributions. Comparative simulations without concentration influence highlight the distinct impact of concentration on thermal behavior. The study underscores a reliable approach to noise reduction and insight into concentration-dependent heat transfer dynamics. © 2024 Trans Tech Publications Ltd, All Rights Reserved.

关键词： Noise abatement

来源：评论

学校读者我要写书评

暂无评论

Adaptive Power Regulation control for Floating Wind Turbines with Guaranteed Transient Performance

引用

IEEE Transactions on automation Science and engineering 2025年 22卷 15588-15598页

作者： Gong, Yingjie Meng, Wenchao Geng, Hua Yang, Qinmin Zhejiang University State Key Laboratory of Industrial Control Technology College of Control Science and Engineering Hangzhou310027 China Tsinghua University Beijing National Research Center for Information Science and Technology Department of Automation Beijing100084 China Huzhou Industrial Control Technology Research Institute Huzhou313000 China

Floating offshore wind turbines (FOWTs) hold significant potential for developing wind energy in deep-sea areas. However, they are prone to additional motions, heavy workloads, and undesirable fluctuations under combined wind-wave loads. To tackle these issues, this paper presents a novel adaptive blade pitch control strategy with guaranteed transient performance for FOWTs operating in above-rated wind speed regions. This strategy effectively suppresses platform pitch motion to enhance system stability while maintaining the power output at its rated value. Specifically, this method initiates by defining a filtered regulation error to solve the non-affine nature of its model. An adaptive blade pitch controller is subsequently proposed, integrating an online learning approximator to cope with the unknown dynamics caused by unmeasurable external environmental inputs and model uncertainties. To further mitigate approximation errors, a nonlinear robust control law with adaptive gains is employed, enhancing the robustness and adaptive capabilities of the controller. Superior to the traditional adaptive controllers, a significant advantage of this strategy is its ability to quantify and ensure regulatory performance within predefined constraints during both transient and steady-state stages, thereby achieving high-performance control in power regulation. Finally, simulation studies are conducted using the OpenFAST software to show the capability of the presented blade pitch controller, which guarantees stable power generation with guaranteed transient performance. © 2004-2012 IEEE.

关键词： Robust control

来源：评论

学校读者我要写书评

暂无评论

Speed control of Ultrasonic Motor Based on Muller Iteration

Speed Control of Ultrasonic Motor Based on Muller Iteration

引用

2023 International Conference on Artificial Intelligence and automation control, AIAC 2023

作者： Zhang, Hui Yin, Guoliang Zhang, Zhaowei Wu, Zhiguo Zuo, Xiaozhong Shenyang Jianzhu University College of Electrical and Control Engineering Shenyang China Shenyang Jianzhu University Shenyang Institute of Automation Chinese Academy of Sciences College of Electrical and Control Engineering Shenyang China Chinese Academy of Sciences Shenyang Institute of Automation Shenyang China

ISBN: (纸本)9798350383805

Newton iterative learning is a common method for nonlinear speed control of ultrasonic motors, but it requires the determination of the differential term, which is difficult and affects the performance. To overcome this problem, a Muller iterative learning control strategy based on numerical analysis is proposed in this paper. A STM32-based ultrasonic motor drive control system is designed to implement the proposed strategy and achieve precise control of the motor speed. The simulation and experimental results show that the proposed method can effectively improve the control performance and response speed of the ultrasonic motor, demonstrating its feasibility in practical applications. © 2023 IEEE.

关键词： Speed control

来源：评论

学校读者我要写书评

暂无评论

Multi-agent Reinforcement Learning Algorithm Based on Role Parameter Sharing 1

引用

7th Chinese Conference on Swarm Intelligence and Cooperative control, CCSICC 2023

作者： Zhang, Hui Xu, Chi Zhang, Ting-Ting Zhang, Ya School of Automation Southeast University Nanjing210096 China High-Tech Department Jiangsu Automation Research Institute Lianyungang222061 China School of Command and Control Engineering Army Engineering University Jiangsu Nanjing210017 China

ISBN: (数字)9789819733361

ISBN: (纸本)9789819733354

In multi-agent reinforcement learning, scalability is a significant challenge. Applying reinforcement learning algorithms in large-scale multi-agent systems requires consideration of algorithm efficiency. This paper attempts to reduce network parameter quantity and training time from the perspective of parameter sharing. However, parameter sharing may also bring some disadvantages, such as policy similarity, which may limit the formation of cooperative policies and affect the efficiency of the entire system. To address the problems caused by parameter sharing, this paper proposes a multi-agent reinforcement learning algorithm with role parameter sharing (R-PS). By dynamically dividing roles and selecting objects for parameter sharing, R-PS automatically identifies intelligent agents that may generate beneficial parameter sharing and conducts partial parameter sharing within the roles. Meanwhile, intrinsic rewards are introduced to increase the diversity of agent strategies. Experimental results show that R-PS can effectively divide roles, benefit from partial parameter sharing, and form diverse policies through intrinsic rewards. It also reduces training time, produces excellent performance and collaboration. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Reinforcement learning

来源：评论

学校读者我要写书评

暂无评论

Resilient time-varying formation optimal tracking for heterogeneous multi-agent systems with coupled constraints

引用

IEEE Transactions on automation Science and engineering 2025年 22卷 15274-15285页

作者： Su, Lingfei Lin, Zhi Hua, Yongzhao Shi, Zhexin Dong, Xiwang Lu, Jinhu Wang, Danwei Beihang University School of Artificial Intelligence Institute of Artificial Intelligence Beijing100191 China Beihang University School of Automation Science and Electrical Engineering Beijing100191 China Beihang University School of Automation Science and Electrical Engineering Shenyuan Honors College Beijing100191 China Beijing100191 China Science and Technology on Aircraft Control Laboratory Beihang University School of Automation Science and Electrical Engineering Beijing100191 China Zhongguancun Laboratory Beijing100094 China Nanyang Technological University School of Electrical and Electronic Engineering 639798 Singapore

Formation constrained optimal tracking problems for heterogeneous multi-agent systems under Byzantine attacks are studied. The objective of the honest agents, unaffected by Byzantine attacks, is to find optimal trajectories that minimize the cumulative local cost functions of all honest agents, while simultaneously satisfying the cumulative local inequality constraints and maintaining the formation configuration. A distributed resilient formation tracking controller utilizing preview control and primal-dual strategy is proposed without requiring each agent to know which agents are affected by Byzantine attacks. The performance of the proposed algorithm is analyzed in terms of the upper bounds of dynamic regret and constraint violations. Numerical simulations and experiments, involving one unmanned aerial vehicle and four unmanned ground vehicles, are performed to verify the effectiveness of the obtained results. © 2004-2012 IEEE.

关键词： Cost functions

来源：评论

学校读者我要写书评

暂无评论

Multi-User Cooperative Receive Scheme for Air-to-Ground Vortex Wave Communications

引用

China Communications 2025年第3期22卷 76-85页

作者： Zhang Beibei Chen Ruirui Lin Jinyang Li Qi Liang Liping Sun Yanjing School of Information and Control Engineering China University of Mining and TechnologyXuzhou 221116China Jiangsu Automation Research Institute Lianyungang 222061China State Key Laboratory of Integrated Services Networks Xidian UniversityXi’an 710071China

Orbital angular momentum(OAM)can achieve multifold increase of spectrum efficiency,but the hollow divergence characteristic and Line-of-Sight(LoS)path requirement impose the crucial challenges for vortex wave *** air-to-ground vortex wave communications,where there exists the LoS path,this paper proposes a multi-user cooperative receive(MUCR)scheme to break through the communication distance limitation caused by the characteristic of vortex wave hollow *** particular,we derive the optimal radial position corresponding to the maximum intensity,which is used to adjust the waist *** on the waist radius and energy ring,the cooperative ground users having the minimum angular square difference are ***,the signal compensation scheme is proposed to decompose OAM signals in air-to-ground vortex wave *** results are presented to verify the superiority of our proposed MUCR scheme.

关键词： air-to-ground capacity cooperative receive multi-user vortex wave communications

来源：评论

学校读者我要写书评

暂无评论

A Learning-Based Path Planning Method for Spatial Robots

A Learning-Based Path Planning Method for Spatial Robots

引用

2023 China automation Congress, CAC 2023

作者： Zhang, Zhengpeng Ye, Jiayan Zhang, Jinkun Cheng, Yan School of Automation and Electronic Information Xiangtan University Hunan China Beijing Institute of Control Engineering Beijing China

ISBN: (纸本)9798350303759

Space robots face challenges such as communication delays, unknown environmental information, complex terrain and obstacles, and energy constraints when performing path planning. To address the problem of high path costs in sampling-based path planning algorithms due to random sampling in unknown complex scenes, this paper proposes a learning-based path planning method for space robots. This method enables space robots to perform efficient and low-consumption path planning. It constructs a probabilistic network of end-to-end encoder-decoders, using U-net as the thematic framework. The probability distribution predicted by the network serves as the prior information for optimal path planning. Subsequently, the traditional sampling-based path planning algorithm is employed to plan the optimal path based on the probability guidance. Experimental results demonstrate that the method proposed in this paper exhibits superior overall performance in terms of path length, time cost, and memory utilization compared to the traditional RRTs algorithm and the existing CNN + bidirectional search algorithm. © 2023 IEEE.

关键词： Motion planning

来源：评论

学校读者我要写书评

暂无评论

EMI suppression in a Buck converter based on Chaotic Gaussian switching waveform technique

EMI suppression in a Buck converter based on Chaotic Gaussia...

引用

2024 CSAA/IET International Conference on Aircraft Utility Systems, AUS 2024

作者： Wang, Jingsong Li, Chentao Wang, Xutian Xu, Ping Ma, Qishaung School of Automation Science and Electrical Engineering Beihang University Beijing China Navigation Guidance and Control Institute of NORINCO Group Beijing100089 China

With the extensive use of wide bandgap represented by silicon carbide (SiC) and gallium nitride (GaN) semiconductor devices, The power density of power electronic converters has been enhanced, driving towards miniaturization and integration, which has led to a more intricate electromagnetic environment within power converters, and the accompanying electromagnetic interference (EMI) problem has become more prominent. Generally, the voltage and current mutation caused by the rapid switching action of power semiconductor devices is regarded as the primary source of EMI in power converters. To mitigate the conducted EMI from power converters, this study employed an infinitely differentiable "S"-shaped Gaussian function and chaotic pulse width modulation (CPWM) signals for convolution, yielding an optimized chaotic gaussian pulse width modulation (CGPWM) signal that served as a reference waveform to shape the switching voltage waveform of the power metal-oxide-semiconductor field-effect transistors (MOSFETs). Experimental results demonstrate the efficacy of this driving waveform in suppressing EMI generated by power converters. © The Institution of engineering & Technology 2024.

关键词： Gallium nitride

来源：评论

学校读者我要写书评

暂无评论

controllability of General Linear Discrete Multi-Agent Systems with Directed and Weighted Signed Network

引用

Journal of Systems Science & Complexity 2022年第6期35卷 2107-2130页

作者： ZHAO Lanhao JI Zhijian LIU Yungang LIN Chong Institute of Complexity Science College of AutomationQingdao UniversityQingdao 266071China Shandong Key Laboratory of Industrial Control Technology Qingdao UniversityQingdao 266071China School of Control Science and Engineering Shandong UniversityJinan 250061China Institute of Complecity Science College of AutomationQingdao UniversityQingdao 266071China

This paper investigates the controllability of general linear discrete-time multi-agent systems with directed and weighted signed networks by using graphic and algebraic *** nondelay and delay cases are considered *** the case of no time delay,the upper bound condition of the controllable subspace is given by using the equitable partition method,and the influence of coefficient matrix selection of individual dynamics is *** the case of single delay and multiple delays,the equitable partition method is extended to deal with time-delay systems,and some conclusions are *** particular,some simplified algebraic criteria for controllability of systems with time delay are obtained by using augmented system method and traditional algebraic controllability criteria.

关键词： controllability equitable partition multi-agent system signed network time-delays

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：