检索结果-内蒙古大学图书馆

作者： Chen, Cong Long, Zixuan Nan, Fang Xiao, Luyao Zhu, Dijie Li, Xiang Liu, Ying Shao, Shihai National Key Laboratory of Science and Technology on Communications University of Electronic Science and Technology of China Chengdu China Telecom Research Institute Beijing China Glasgow College University of Electronic Science and Technology of China Chengdu China Laboratory of Electromagnetic Space Cognition and Intelligent Control Beijing China

Almost blank subframe (ABS) is a classic and efficient technology to cancel interference in cellular networks and could be applied in future networks such as ultra-density network. However, the existence of ABS will result in the deterioration of the communication capacity of the macro base station (BS), particularly for applications with large number of edge users. To solve this problem, an improved ABS technology with an interference cancelation scheme is proposed. For the considered scenario, the macro BS and the micro BS work in a cooperative manner, where the signal transmitted by the macro BS interferes with the communication between the micro BS and its edge terminals. At the terminal side, both the nonlinearity of the macro BS transmitter and the propagation model between the edge user and the macro BS are estimated using neural networks (NNs), which are then sent to the micro BS for interference elimination through the ABS. At the micro BS side, firstly, the nonlinearity and channel parameters from the ABS frame are used to generate a cancelation signal. Secondly, the cancelation signal is sent from the micro BS to the edge user to eliminate the disturbance from the macro BS. This enhanced technology can alleviate the disturbance for the edge user. Meanwhile, since it massively decreases the occupancy of ABS in the macro BS, the capacity of the macro cell can be improved. © 2023 John Wiley & Sons Ltd.

关键词： Heterogeneous networks

来源：评论

学校读者我要写书评

暂无评论

A new active rehabilitation training mode for upper limbs based on Tai Chi Pushing Hands

引用

Biomimetic Intelligence & Robotics 2024年第3期4卷 82-92页

作者： Xiangpan Li Liaoyuan Li Jianhai Han Bingjing Guo Ganqin Du School of Mechatronics Engineering Henan University of Science and TechnologyLuoyang 471003China Henan Provincial Key Laboratory of Robotics and Intelligent Systems Luoyang 471003China School of Automotive Engineering Hubei University of Automotive TechnologyShiyan 442002China Hubei Key Laboratory of Automotive Power Train and Electronic Control Shiyan 442002China The First Affiliated Hospital of Henan University of Science and Technology Luoyang 471003China

Robot-assisted rehabilitation is a crucial approach to restoring motor function in the ***,the current training trajectory lacks sufficient theoretical or practical support,and the monotony of single-mode training is a *** Chi Pushing Hands,a beneficial and effective daily exercise,has been shown to improve balance function,psychological state,and motor function of the upper extremities in patients recovering from *** address these issues,we propose a new active rehabilitation training that incorporates Tai Chi Pushing Hands movements and yin-yang balance *** training trajectory and direction are encoded by the velocity field and consist of two processes:yang(push)and yin(return).During yang,the limb actively pushes the robot to move,while during yin,the limb actively follows the robot’s *** provide necessary assistance,an admittance controller with self-adaptive parameters is *** addition,we introduce two indexes,the‘Intention Angle’(ϖ)and the time ratio(Γ),to evaluate motion perception *** experiment was conducted on a 4-degree-of-freedom upper limb rehabilitation robot platform,and the subjects were separated into a familiar group and an unfamiliar *** experiment results show that the training could be completed well no matter whether the subject is familiar with Tai Chi Pushing Hands or *** parameters and the movement of the robot can be adjusted based on the interactive force to adapt to the ability of the subject.

关键词： Tai Chi Push Hands Velocity field Self-adaptive admittance Upper limb rehabilitation Active training

来源：评论

学校读者我要写书评

暂无评论

Wireless power transmission system with CC and CV output based on hybrid LCC-S/P topology 5

Wireless power transmission system with CC and CV output bas...

引用

5th International Conference on electronics and Communication, Network and Computer technology, ECNCT 2023

作者： Li, Kun Gong, Zheng Meng, Jiaheng Liu, Qing Tianjin University of Technology Tianjin Key Laboratory of Film Electronic and Communication Device Tianjin China Tianjin University of Technology Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control Tianjin China

ISBN: (纸本)9798350328660

Wireless Power Transfer (WPT) technology provides a convenient and efficient power supply solution for mobile devices. The utilization of constant current (CC) and constant voltage (CV) control in WPT systems proves valuable for charging battery applications. This paper presents a novel WPT system with CC and CV output characteristics, employing a switching topology. Specifically, the LCC-S and LCC-P topologies are applied and rigorously simulated. The proposed MCR-WPT system's output characteristics in both CC and CV modes are meticulously validated using Saber software. The simulation results distinctly demonstrate the system's capability to achieve CC and CV outputs within a varying load resistance range of 5Ω to 30Ω, thus conclusively establishing the efficacy of the topology switching technology. © 2023 IEEE.

关键词： Topology

来源：评论

学校读者我要写书评

暂无评论

Design of Wide Stopband and High Suppression Cavity Filter 24

Design of Wide Stopband and High Suppression Cavity Filter

引用

24th International Vacuum electronics Conference, IVEC 2023

作者： Zhao, Junyu Ma, Chunguang Zhou, Jinghan Li, Junhui Liu, Jiaming Luo, Yong School of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu611731 China State Key Laboratory of Electromagnetic Space Cognition and Intelligent Control Technology Beijing100089 China

ISBN: (纸本)9781665473217

Radio frequency filter is the core device to improve the signal to noise ratio of radar. A cavity filter for suppressing high harmonics in Ka band millimeter wave (MMW) radar is presented. The structural parameters of the filter are obtained by theoretical calculation. A cavity filter with the center frequency of 8.1 GHz and the relative bandwidth of 9.80% is designed by using HFSS electromagnetic simulation software. The spurious passband is above twice the frequency of the center frequency. The attenuation of the stopband is greater than 78 dB in 9.2 16 GHz, which can well meet the demand of the need of Ka band MMW radar to suppress high harmonics. © 2023 IEEE.

关键词： Electromagnetic simulation

来源：评论

学校读者我要写书评

暂无评论

HiTL-based adaptive fuzzy tracking control of MASs:A distributed fixed-time strategy

引用

Science China(Technological Sciences) 2023年第10期66卷 2907-2916页

作者： LIU Yang CHI RongHu LI HongYi WANG LiJie LIN Na College of Automation and Electronic Engineering Qingdao University of Science and TechnologyQingdao 266061China School of Automation Guangdong University of TechnologyGuangzhou 510006China Guangdong Province Key Laboratory of Intelligent Decision and Cooperative Control Guangdong University of TechnologyGuangzhou 510006China Institute of Complexity Science and the School of Automation Qingdao UniversityQingdao 266071China

Human-in-the-loop(HiTL)control is promising for the cooperative control problem of multi-agent systems(MASs)under the complicated *** considering the effect of human intelligence and decision making,the system robustness and security are notably ***,a distributed fixed-time tracking control problem is investigated in this paper for heterogeneous MASs based on the HiTL ***,a lemma of practically fixed-time stable is given where an explicit relationship of settling time and convergence domain is clearly ***,under the framework of the adaptive backstepping approach,a series of modified intermediate control signals is designed to avoid the singularity problem by taking advantage of power transformation,fuzzy logic systems,and inequality ***,the numerical example and comparison results are utilized to testify the effectiveness of the proposed method.

关键词： human-in-the-Loop heterogeneous MASs fixed-time stable adaptive tracking control fuzzy logic systems

来源：评论

学校读者我要写书评

暂无评论

Visual localization and map construction based on ground texture 19th

Visual localization and map construction based on ground tex...

引用

19th Chinese intelligent Systems Conference, CISC 2023

作者： Chen, Xin Yu, Lei School of Mechanical and Electric Engineering Soochow University Suzhou China Key Laboratory of Opto-Technology and Intelligent Control Ministry of Education Lanzhou Jiaotong University Lanzhou China Jiangsu Key Laboratory of Advanced Manufacturing Technology Huaiyin Institute of Technology Huai’an China

ISBN: (纸本)9789819968817

This paper describes a visual localization and map construction method based on ground texture. The ground texture is scanned twice in a zigzag pattern and divided into a grid to avoid distortion of the stitched image. A global optimization method is used to calculate the image pose by reprojection constraint and key frame selection to stitch the global map. For positioning, the global positioning is transformed into a local positioning process through global search and local optimization, which improves the speed and accuracy of positioning. For map updating, local optimization is performed by constructing loopbacks for possible stain occlusion or breakage problems to solve tracking loss and repositioning problems. Experimental results show that the ground texture stitching and localization results after global optimization match well with the true values, and the global maps constructed by stitching are aligned with the true physical locations. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2023.

关键词： Textures

来源：评论

学校读者我要写书评

暂无评论

10-Hertz squeezed light source generation on the cesium D_(2)line using single photon modulation

引用

Frontiers of physics 2023年第3期18卷 167-174页

作者： Guan-Hua Zuo Yu-Chi Zhang Gang Li Peng-Fei Zhang Peng-Fei Yang Yan-Qiang Guo Shi-Yao Zhu Tian-Cai Zhang State Key Laboratory of Quantum Optics and Quantum Optics Devices Collaborative Innovation Center of Extreme OpticsInstitute of Opto-ElectronicsShanxi UniversityTaiyuan 030006China College of Physics and Electronic Engineering Shanxi UniversityTaiyuan 030006China Department of Physics Zhejiang UniversityHangzhou 310027China Key Laboratory of Advanced Transducers and Intelligent Control System Ministry of Education and Shanxi ProvinceCollege of Physics and OptoelectronicsTaiyuan University of TechnologyTaiyuan 030024China

Generation of squeezed light source is a promising technique to overcome the standard quantum limit in precision ***,we demonstrate an experimental generation of quadrature squeezing resonating on the cesium D_(2)line down to 10 Hz for the first *** maximum squeezing in audio frequency band is 5.57 ***,we have presented a singlephoton modulation locking to control the squeezing angle,while effectively suppressing the influence of laser noise on low-frequency *** whole system operates steadily for *** generated low-frequency squeezed light source can be applied in quantum metrology,light–matter interaction investigation and quantum memory in the audio frequency band and even below.

关键词： squeezed state optical parametric amplifier low-frequency squeezing

来源：评论

学校读者我要写书评

暂无评论

Deep Lagrangian Network Learning and control of Robotic Exoskeleton Based on Multi-Sensor-Cyber Information Fusion

IEEE Transactions on Industrial Cyber-Physical Systems

引用

IEEE Transactions on Industrial Cyber-Physical Systems 2024年 2卷 331-339页

作者： Guo, Qing Zhan, Haoran Zhang, Jiyu University of Electronic Science and Technology of China School of Aeronautics and Astronautics Chengdu611731 China Chengdu The Aircraft Swarm Intelligent Sensing and Cooperative Control Key Laboratory of Sichuan Province 611731 China Hangzhou RoboCT Technology Development Company Ltd. Hangzhou311100 China

The overall performance improvement of model-based controller depends on the accurate plant model. However, many complicated plants exist unmodeled uncertainties caused by irregular structure, motion frictions, and external disturbances, which are difficult to obtain the mathematical model with high accuracy. In this work, a multi-sensor-cyber is constructed to sample the physics information about human-exoskeleton interaction and exoskeleton joint motion. Meanwhile, a model identification method based on Deep Lagrangian Network (DeLaN) is presented in robotic exoskeleton to realize multi-sensor information fusion and obtain the reasonable parameters of Lagrangian model. Then a human-exoskeleton cooperative motion control based on nonlinear extended state observer is proposed to guarantee that the exoskeleton tracks two joint demands in the case of tolerable human-exoskeleton interaction. Finally, the effectiveness of the proposed model identification and control scheme is verified by the experimental results in two-DOF exoskeleton platform. © 2023 IEEE.

关键词： Information fusion

来源：评论

学校读者我要写书评

暂无评论

Cooperative Unknown Area Coverage by a Swarm of Agents with Limited Sensing and Identification Capabilities 5th

Cooperative Unknown Area Coverage by a Swarm of Agents with ...

引用

5th Chinese Conference on Swarm Intelligence and Cooperative control, CCSICC 2021

作者： Du, Wentao Li, Zhiqiang Li, Weihao Lin, Boxian Shi, Mengji University of Electronic Science and Technology Chengdu611731 China Aircraft Swarm Intelligent Sensing and Cooperative Control Key Laboratory of Sichuan Province Chengdu China

ISBN: (纸本)9789811939976

To cover an unknown area, the agents usually work with SLAM or path-planning-based schemes, and they often rely on stable data communication for task assignment to minimize overlapped coverage. However, the unavailability of a wireless network in an extreme environment, resulting in reduced ability to identify a homogeneous agent and possession of limited sensing range, poses a challenge to the cooperation, since many existing control algorithms turn out to be inapplicable. For this configuration, the paper proposes an improved sweep coverage control strategy from our previous work which requires a constant connection among index neighbors to string them up and generate a flexible formation that adapts to the unstructured environment. In this work, efforts are made to build a coverage formation by establishing a connected linear sensing topology among the agents via coordinate compression and active reconnection tactics, where the adjacent agents are the closest ones without knowing each other's index number. The parameters in the proposed control law are discussed and examined in a bunch of simulations with a conclusion of how they affect the performance of the coverage control. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Motion planning

来源：评论

学校读者我要写书评

暂无评论

MMW Broadband Radar Compressed Sensing Imaging Based on SAMP Optimization Algorithm 24

MMW Broadband Radar Compressed Sensing Imaging Based on SAMP...

引用

24th International Vacuum electronics Conference, IVEC 2023

作者： Zhou, Jinghan Ma, Chunguang Liu, Jiaming Yuan, Zhenqian Luo, Yong School of Electronic Science and Engineering University of Electronic Science and Technology of China Sichuan Chengdu610054 China State Key Laboratory of Electromagnetic Space Cognition and Intelligent Control Technology Beijing100089 China

ISBN: (纸本)9781665473217

With the development of gyrotron traveling wave amplifier, long-range high-resolution millimeterwave (MMW) imaging broadband radar has been developed rapidly. Nyquist theorem brings challenges to wideband radar signal sampling, and the hardware complexity and cost of the required equipment will increase significantly. Compression sensing (CS) takes advantage of the sparsity of the signal in the transformation domain. Under the condition that it is far less than Nyquist sampling rate, it uses random sampling to obtain discrete samples of the signal, and then perfectly reconstructs the signal through nonlinear reconstruction algorithm. This paper proposes a linear majorization sparsity adaptive matching pursuit (LMSAMP) algorithm based on CS theory. The LMSAMP algorithm with adaptive optimization step size selection is used to reconstructed two-dimensional image of wideband MMW radar. The imaging results show that LMSAMP algorithm has a good imaging effect. © 2023 IEEE.

关键词： Radar imaging

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：