检索结果-内蒙古大学图书馆

3rd International Conference on Neural Networks, Information and Communication engineering, NNICE 2023

作者： Yang, Huijie Yang, Zuoyun J., Liu J., Chi School of Automation and Electrical Engineering University of Science and Technology Beijing Beijing China School of Automation and Electrical Engineering University of Science and Technology Beijing Engineering Research Center of Intelligence Perception and Autonomous Control Ministry of Education Beijing China

ISBN: (纸本)9798350335972

Appearance-based gaze estimation has gained more and more attention because of its generality, robustness, and subject independence. Deep learning, which has made a great deal of success in computer vision, has also greatly improved the accuracy of appearance-based gaze estimation. To further reduce the error in gaze estimation, we focus on extracting better feature information from eye and face images. In this paper, we propose a novel multimodal fusion gaze estimation model based on ConvNext and dilated convolution. In this model, the eye image and face image are used as input, and the ConvNext network is used to extract the features of the face image and the eye features are extracted by a dilated convolution-based network, and the feature map of the two images are fused using the fully connected layer to perform gaze estimation. In the experimental part, the designed model is verified on the public dataset MPIIGaze, and compared the proposed model with other gaze estimation models. The experimental results show that our proposed method has greatly improved the accuracy of gaze estimation on the MPIIGaze dataset compared to other related works. Our proposed multimodal fusion gaze estimation model achieves state-of-the-art result on the MPIIGaze dataset. © 2023 IEEE.

关键词： Convolution

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

CNS/INS Integrated Navigation Method Based on Improved Adaptive CKF Algorithm 49

CNS/INS Integrated Navigation Method Based on Improved Adapt...

引用

49th Annual Conference of the IEEE Industrial Electronics Society, IECON 2023

作者： Wang, Dong Yang, Jing Xiong, Kai Li, Wenling School of Automation Science and Electrical Engineering Beijing University of Aeronautics and Astronautics Beijing China Science and Technology on Space Intelligent Control Laboratory Beijing Institute of Control Engineering Beijing China

ISBN: (纸本)9798350331820

Aiming at the problem that measurement model uncertainty restrains navigation accuracy in the celestial/ inertial (CNS/INS) integrated navigation system, a kind of CNS/INS integrated navigation method based on improved adaptive cubature Kalman filter (CKF) is proposed. In order to mitigate the influence of installation error and axis disturbance error of star camera, angular distance between starlight vector of stars and line of sight vector of space targets is employed to establish the measurement model;the measurement noise covariance matrix (MNCM) is estimated online to lower the model uncertainty;adaptive adjustment coefficient is constructed based on squared Mahalanobis distance (SMD) of measurement innovation to adjust forgetting factor online to further improve robustness and adaptability of the method. Simulation results demonstrate that the proposed method can achieve higher navigation accuracy compared to standard and classical method under measurement model mismatch. © 2023 IEEE.

关键词： Uncertainty analysis

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

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

Distributed Privacy-Preserving State-of-Charge Balance control for Multiple Energy Storage Systems in Smart Grid

Distributed Privacy-Preserving State-of-Charge Balance Contr...

引用

2023 China automation Congress, CAC 2023

作者： Liu, Weijia Guo, Fanghong Xing, Lantao Su, Hongye Wang, Lei College of Control Science and Engineering Zhejiang University Hangzhou China Zhejiang University of Technology Department of Automation Hangzhou China School of Control Science and Engineering Shandong University Jinan China

ISBN: (纸本)9798350303759

This paper studies the distributed state of charge (SoC) balance control strategy in battery energy storage systems (BESSs), satisfying privacy-preserving requirement of BESSs privacy-sensitive data, i.e., configurations and SoC, which may be transmitted among BESSs. Considering each BESS communicates with its neighboring BESS, we use a distributed dynamic average consensus algorithm to do parameter estimations. Using obtained parameters, we set proper power output of each BESS and maintains overall maximum capability. Different from common algorithms, this algorithm not only converges to the exact average of reference signals and thus help set control power outputs, but also ensures the desired differential privacy by adding zero mean Laplace noises, thus protecting privacy-sensitive data from possible adversaries. Effectiveness of the presented approach is demonstrated by simulations. © 2023 IEEE.

关键词： Charging (batteries)

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

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

Higher-order properties and extensions for indirect MRAC and APPC of linear systems

引用

science China(Information sciences) 2024年第4期67卷 218-238页

作者： Yanjun ZHANG Zhipeng ZHANG Jian SUN Lei WANG Kangkang ZHANG National Key Lab of Autonomous Intelligent Unmanned Systems Beijing Institute of Technology School of Automation Beijing Institute of Technology Beijing Institute of Technology Chongqing Innovation Center College of Control Science and Engineering Zhejiang University Department of Electrical and Electronic Engineering Imperial College London KIOS Research and Innovation Center of Excellence University of Cyprus

Recently, a reference derived some new higher-order output tracking properties for direct model reference adaptive control（MRAC） of linear time-invariant（LTI） systems: limt→∞ e（i）（t） = 0, i = 1,..., n*-1, where n*and e（i）（t） denote the relative degree of the system and the i-th derivative of the output tracking error, respectively. However, a naturally arising question involves whether indirect adaptive control（including indirect MRAC and indirect adaptive pole placement control） of LTI systems still has higher-order tracking properties. Such properties have not been reported in the literature. Therefore, this paper provides an affirmative answer to this question. Such higher-order tracking properties are new discoveries since they hold without any additional design conditions and, in particular, without the persistent excitation condition. Given the higher-order properties, a new adaptive control system is developed with stronger tracking features.（1） It can track a reference signal with any order derivatives being unknown.（2） It has higher-order exponential or practical output tracking properties.（3） Finally, it is different from the usual MRAC system, whose reference signal's derivatives up to the n*order are assumed to be known. Finally, two simulation examples are provided to verify the theoretical results obtained in this paper.

关键词： higher-order tracking indirect adaptive control model reference adaptive control adaptive pole placement control

来源：评论

学校读者我要写书评

暂无评论

Spatio-Temporal Communication Compression in Distributed Prime-Dual Flows 63

Spatio-Temporal Communication Compression in Distributed Pri...

引用

63rd IEEE Conference on Decision and control, CDC 2024

作者： Ren, Zihao Wang, Lei Yuan, Deming Su, Hongye Shi, Guodong Zhejiang University College of Control Science and Engineering China Nanjing University of Science and Technology School of Automation China University of Sydney Australia Centre for Field Robotics Australia

ISBN: (纸本)9798350316339

In this paper, we study distributed prime-dual flows for multi-agent optimization with spatio-temporal compressions. The central aim of multi-agent optimization is for a network of agents to collaboratively solve a system-level optimization problem with local objective functions and node-to-node communication by distributed algorithms. The scalability of such algorithms crucially depends on the complexity of the communication messages, and a number of communication compressors for distributed optimization have recently been proposed in the literature. First of all, we introduce a general spatio-temporal compressor characterized by the stability of the resulting dynamical system along the vector field of the compressor. We show that several important distributed optimization compressors such as the greedy sparsifier, the uniform quantizer, and the scalarizer all fall into the category of this spatio-temporal compressor. Next, we propose two distributed prime-dual flows with the spatio-temporal compressors being applied to local node states and local error states, respectively, and prove (exponential) convergence of the node trajectories to the global optimizer for (strongly) convex cost functions. Finally, a few numerical examples are present to illustrate our theoretical results. © 2024 IEEE.

关键词： Cost functions

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：