检索结果-内蒙古大学图书馆

4th International Conference on Energy, Power and Electrical Engineering, EPEE 2024

作者： Hu, Binjiang Huang, Libin Hu, Yufeng Zhang, Jie Guo, Haiping Lu, Yuanhong Hong, Zeqi Zhang, Jingyue Luo, Hui Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System Guangzhou China Electric Power Research Institute China Southern Power Grid State Key Laboratory of Hvdc Guangzhou China National Energy Power Grid Technology R&d Centre Guangzhou China Electric Power Research Institute China Southern Power Grid Csg Key Laboratory for Power System Simulation Guangzhou China

ISBN: (纸本)9798331518066

With the increasing scale and complexity of power system, the current scheduling strategy methods often have the problems of limited adaptability and unsatisfactory results. Therefore, a power system scheduling method using DQN (Deep Q Network) is introduced in this study. This method uses neural network model to learn and optimize scheduling strategy, and has strong adaptability and enhanced global optimization ability. Comparative evaluations with genetic algorithms and particle swarm algorithms on IEEE-118 and SG-126 datasets show that the proposed method has significant advantages in terms of cumulative reward and stable runtime. © 2024 IEEE.

关键词： Deep reinforcement learning

来源：评论

学校读者我要写书评

暂无评论

Lidar-Inertial and Downward Vision Based Mobile Robot SLAM in Digital Workshops 13

Lidar-Inertial and Downward Vision Based Mobile Robot SLAM i...

引用

13th IEEE Data Driven Control and Learning systems Conference, DDCLS 2024

作者： Zhang, Yanchao Geng, Hao Liu, Bin Zhang, Yinlong Yuan, Xudong Zhang, Sichao School of Information Science and Engineering Shenyang University of Technology Shenyang110020 China Guangzhou Institute of Industrial Intelligence Guangzhou511458 China State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang110016 China Key Laboratory of Networked Control Systems Chinese Academy of Sciences Shenyang110016 China Institutes for Robotics and Intelligent Manufacturing Chinese Academy of Sciences Shenyang110169 China

ISBN: (纸本)9798350361674

In order to solve the problems of long-term cumulative error and the absence of absolute pose in the existing Lidar-Inertial Measurement Unit (IMU) fusion methods for Automated Guided Vehicle (AGV) Simultaneous Localization and Mapping (SLAM), we propose a new SLAM method for mobile robot, integrating Lidar, IMU, and a downward vision camera. Firstly, we tightly couple Lidar-IMU and downward vision camera using a multimodal fusion framework. Downward visual measurements are integrated as QR factors into the factor graph, providing absolute pose information to correct cumulative error in the Lidar-IMU system and enable the joint pose estimation of the AGV. Secondly, an enhanced Iterative Closest Point (ICP) point cloud matching algorithm has been developed to correct the incorrect pose. This approach achieves Scan-to-Map alignment by employing a coarse-to-fine matching strategy, thereby enhancing the accuracy of point cloud alignment. Finally, the extended Kalman filter is used to optimize the Lidar pose drift, as well as the Lidar mapping effectively by using the Lidar-IMU as the measurements and the downward visual measurements as the updates. The algorithm has been extensively evaluated on the developed AGV experimental platform. The experimental results show that the position error is less than 0.02 meters and the orientation error is less than 1°, which solves the problems of long-term error accumulation and the lack of absolute pose information for AGV navigation. © 2024 IEEE.

关键词： Extended Kalman filters

来源：评论

学校读者我要写书评

暂无评论

Brominated PEAI as Multi-Functional Passivator for High-Efficiency Perovskite Solar Cell

引用

Energy & Environmental Materials 2023年第3期6卷 50-57页

作者： Minghao Li Junjie Zhou Liguo Tan Yue Liu Siyang Wang Chaofan Jiang Hang Li Xing Zhao Xingyu Gao Wolfgang Tress Liming Ding Chenyi Yi State Key Laboratory of Power System Department of Electrical EngineeringTsinghua UniversityBeijing 100084China Shanghai Synchrotron Radiation Facility(SSRF) Shanghai Advanced Research InstituteChinese Academy of ScienceShanghai 201800China Institute of Computational Physics Zurich University of Applied SciencesWinterthur 8401Switzerland Center of Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190China

The interfaces of perovskite solar cells(PSCs)are well known to be rich in deep-level carrier traps,which serve as non-radiative recombination centers and limit the open-circuit voltage(Voc)and power conversion efficiency(PCE)of *** chemistry and surface passivators have been researched extensively and mainly focused on the neutralization of uncoordinated lead or anion ***,a novel brominated passivator 2-bromophenethylammonium iodide(2-Br-PEAI)is introduced for a multi-functional passivation effect at the perovskite *** brominated species readily form 2D perovskite on top of the 3D perovskite and multi-interact with the 3D perovskite *** from the halide vacancy filling and anion bonding ability,the Br atoms on the benzene ring can interact with the FA cations via strong hydrogen bonding N-H…Br and interact with the[PbI_(6)]^(4−)inorganic *** interface defects in the PSCs are well passivated,minimizing non-radiative recombination and enhancing device *** a result,a champion PCE of 24.22%was achieved with high V_(oc)and fill *** addition,modified devices also showed enhanced operational stability(retention of>95%initial PCE after 400 h)and humidity resistance(>90%initial PCE maintained after 1500 h under~50%RH).

关键词： brominated PEAI high efficiency perovskite solar cell surface passivation

来源：评论

学校读者我要写书评

暂无评论

Insight into the boosted activity of TiO2–CoP composites for hydrogen evolution reaction:Accelerated mass transfer,optimized interfacial water,and promoted intrinsic activity

引用

Journal of Energy Chemistry 2022年第11期31卷 111-120,I0005页

作者： Mingming Deng Hongmei Yang Lishan Peng Ling Zhang Lianqiao Tan Guiju He Minhua Shao Li Li Zidong Wei The State Key Laboratory of Power Transmission Equipment&System Security and New Technology Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource UtilizationCollege of Chemistry and Chemical EngineeringChongqing UniversityChongqing 400044China Department of Chemical and Biological Engineering Hong Kong University of Science and TechnologyClear Water BayKowloonHong Kong 999077China

The use of abundant elements in the earth as electrocatalytic hydrogen production catalysts is of great significance for hydrogen energy ***,we report amorphous TiO_(2)-decorated CoP/NF(TiO_(2)–CoP/NF)as an excellent electrocatalyst for alkaline hydrogen evolution reaction(HER).The welldispersed amorphous TiO_(2)on nanoneedle-like CoP arrays preserves the crystal structure of CoP and changes its electronic structure by interfacial charge *** to CoP/NF catalyst,the Ti O_(2)–CoP/NF composite catalyst exhibits high HER activity with an overpotential of 61 mV at 10 mA cm^(-2)and high ***,it almost maintains the Volmer step as a rate-determining step(RDS)and the Tafel slope at a wide cathodic potential range showing the fast kinetics under large polarization *** simulations reveal that the combination of TiO_(2)and CoP selectively accelerates the hydrated K+diffusion,regulates the interfacial water orientation to adapt to the subsequent smooth water dissociation,and optimizes*H adsorption/H_(2)*** strengthened coupling of HER multi-scale-processes on transition metal compound composites catalysts is the underlying mechanism for improving HER activity.

关键词： Alkaline water electrolysis Transition metal compound Composite catalysts HER Density functional theory

来源：评论

学校读者我要写书评

暂无评论

An Origami-Based Miniature Jumping Robot with Adjustable Jumping Trajectory and Enhanced Intermittent Jumps

An Origami-Based Miniature Jumping Robot with Adjustable Jum...

引用

IEEE/RSJ International Conference on Intelligent Robots and systems (IROS)

作者： Zhipeng Xiong Lingqi Tang Longlong Hu Songlin Yang Xiaojun Yang Yao Li Bing Li School of Mechanical Engineering and Automation Harbin Institute of Technology Shenzhen China Guangdong Key Laboratory of Intelligent Morphing Mechanisms and Adaptive Robotics Harbin Institute of Technology Shenzhen China State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin China

A small-scale jumping robot can reach obstacles much larger than its size. It is important for a jumping robot to perform intermittent jumps to cross through rough terrains. However, the limitations of conventional structures hinder the further integration of functions to a miniature (sub-50 g) jumping robot. No sub-50 g jumpers could perform intermittent jumps with adjustable jumping trajectories. In this work, we proposed an origami-based miniature jumper, which performed intermittent jumps with adjustable omni-directional trajectories. The intermittent jumps were achieved by the jumping and self-righting mechanisms, which were actuated by a single motor. The clockwise and counterclockwise rotation of the motor actuated the loading, self-righting and triggering process, respectively. The jumping height was adjustable by adjusting the rotation angle of the motor. Meanwhile, the take-off pitch & yaw angle adjustment methods were integrated into the robot. Therefore, we demonstrated a 9 cm, 13.5 g prototype with functions of re-loading, self-righting, jumping height adjustment and take-off pitch & yaw angle adjustment. The robot could adjust jumping height from 16 to 34 cm and self-right for the next jump. The results revealed that our robot could jump across different obstacles with different scales and directions. The mobility was greatly increased compared with other miniature jumping robots.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Soft ionic-hydrogel electrodes for electroencephalography signal recording

引用

Science China(Technological Sciences) 2021年第2期64卷 273-282页

作者： SHENG XinJun QIN Zhun XU HaiPeng SHU XiaoKang GU GuoYing ZHU XiangYang Robotics Institute School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Mechanical System and Vibration Shanghai Jiao Tong UniversityShanghai 200240China

Wet gel electrodes have been widely used for electroencephalography(EEG) signal recording, which generally causes skin abrasion and longer preparation time. In this paper, we present soft ionic-hydrogel based electrodes to overcome such *** order to conveniently measure the EEG signals, we design the claw-like and patch-like structures for robust connection between metal(Ag/Ag Cl) electrodes and skin scalps. Next, we experimentally show that the soft ionic-hydrogel based electrodes have similar performance with the conventional wet gel electrodes in terms of the short-circuit noise, electrical impedance, and skin-electrode contact impedance on unprepared human skin, significantly better than dry electrodes and water-based *** further perform the EEG measurements and steady-state visual evoked potentials(SSVEP) experiments with five subjects to verify the effectiveness of the soft ionic-hydrogel based electrodes. The experimental results demonstrate that our developed soft ionic-hydrogel electrodes can record high-quality EEG signals in a fast and clean way, being a compelling option for EEG-based brain-computer interfaces.

关键词： brain-computer interface EEG electrodes ionic hydrogel soft materials

来源：评论

学校读者我要写书评

暂无评论

The Development of Simulation Mirror system and its Application in HVDC 6

The Development of Simulation Mirror System and its Applicat...

引用

6th International Conference on HVDC, HVDC 2024

作者： Ou, Kaijian Wu, Wencong Cai, Haiqing State Key Laboratory of Hvdc Electric Power Research Institute China Southern Power Grid National Energy Power Grid Technology R&d Centre. Guangzhou China Guangdong Prov. Key Laboratory of Intelligent Operation and Control for New Energy Power System. Guangzhou China Csg Key Laboratory for Power System Simulation Electric Power Research Institute China Southern Power Grid Guangzhou China

ISBN: (纸本)9798350387759

The testing of HVDC new control function and training of HVDC operation personnel require the integration of power system simulation and dispatching automation. This paper presents and builds AC&DC power system simulation mirror system, which is the closed-loop of real-time digital simulation and dispatching automation. Moreover, the applications of simulation mirror system on HVDC new control function testing and HVDC simulation training cabinet are also introduced in this paper. © 2024 IEEE.

关键词： automatic generation control (A GC) automatic HVDC control (ADC) dispatching automation high voltage direct curren t(HVD C) real-time digital simulator(RTDS)

来源：评论

学校读者我要写书评

暂无评论

Based on PPO Reinforcement Learning for Ship Berthing and Departure Control

Based on PPO Reinforcement Learning for Ship Berthing and De...

引用

International Conference on Artificial Intelligence and Autonomous Transportation, AIAT 2024

作者： Zhou, Ziyan Ma, Feng Zhou, Xuan Intelligent Transportation System Center Wuhan University of Technology Wuhan China State Key Laboratory of Maritime Technology and Safety Wuhan University of Technology Wuhan China Henan Transport Investment Group Co. LTD. Zhengzhou China

ISBN: (纸本)9789819639564

A control method based on proximal policy optimisation (PPO) algorithm is proposed to control autonomous berthing of unmanned vessels. Firstly, Bessel curves are used to generate the desired path, and the heading error, speed error, and lateral error are obtained by calculating with the current state of the ship, and then these errors are used as inputs to establish the reward function mechanism, and then the state of the ship and the reward obtained are inputted into the PPO algorithm so that the intelligent body can take behaviours according to the state and the reward, and finally, the actions of the intelligent body are inputted into the ship model to achieve bi-variable control of the ship’s rudder angle and thrust. Finally, the actions of the intelligent body are inputted into the ship model to achieve the bivariate control of the rudder angle and thrust. The experimental results show the effectiveness of PPO reinforcement learning in the automatic berthing process of unmanned vessels with low speed, interference and low rudder efficiency. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： Reinforcement learning

来源：评论

学校读者我要写书评

暂无评论

Laser Implicit Interaction technology Based on Object Affordance for Wmra

SSRN

引用

SSRN 2022年

作者： Liu, Yaxin Liu, Yan Yao, Yufeng Zhong, Ming State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin150001 China

It is particularly important for the disabled to operate the wheelchair mounted robotic arm (WMRA) with as few limb movements as possible. This human-robot implicit interaction problem for the elderly and handicapped has attracted extensive attention. Several studies have documented that laser pointer interaction is an attractive method enabling humans to unambiguously point out objects and pick them up. However, how to further convey user intention and instruct the robot to complete complex tasks based on this method has yet to be studied. Therefore, based on the idea of object affordance, this paper proposes an implicit intention interaction technology using a laser pointer. The user could point to the object in the scene through the residual limb movement ability and the WMRA will reason the action intention and assemble the task content according to the intention. Firstly, a laser semantic identification algorithm based on the YOLOv4 & the SVM is proposed to identify laser points in the scene, which can effectively avoid the error operation caused by hand twitch. Then, an automatic execution technology based on the concept of object affordance is proposed to perform household tasks, which would identify the implicit action intention of the selected objects based on the conditional random field and assemble the mapping action of intention based on the finite state machine. Finally, the feasibility of the proposed implicit interaction technology is verified on the WMRA platform. The evaluation results show that the user only needs a simple operation and the WMRA can recognize the user's desired intentions and perform household tasks automatically. Compared with previous methods, the proposed method can output the desired intention faster and significantly reduce the user's limb involvement time (about 85%) in operating the WMRA under the same task. © 2022, The Authors. All rights reserved.

关键词： Random processes

来源：评论

学校读者我要写书评

暂无评论

Research on optimized scheduling of cloud-edge collaboration resources for industrial internet platform in home appliance industry 3

Research on optimized scheduling of cloud-edge collaboration...

引用

3rd International Conference on Electronic Information Engineering and Data Processing, EIEDP 2024

作者： Lu, Xiaoping Yang, Zhenfa Sheng, Guojun Qin, Chenggang Wang, Chao Wang, Pengjing COSMOPlat IoT Technology Co. Ltd. Shandong Qingdao266103 China Co. Ltd Shandong Qingdao266100 China State Key Laboratory of Massive Personalized Customization System and Technology Shandong Qingdao266100 China

ISBN: (纸本)9781510680531

To address the pain points in the digital transformation of the home appliance industry, Haier Group has established an industrial Internet platform for the home appliance industry based on cloud-edge collaboration. Through built-in modules on the platform, intelligent allocation of cloud-edge resources and task optimization scheduling can be achieved. This module consists of three parts: task response reception and processing submodule, task deployment submodule, and task scheduling algorithm library submodule. It can efficiently manage cloud-edge computing resources at three levels: unified scheduling of large-scale tasks, collaborative deployment of heterogeneous computing, and real-time reconstruction of edge tasks, meeting the real-time demands of heterogeneous computing, task deployment, and collaborative optimization. Currently, this platform has been implemented in Haier's home appliance factories, providing valuable insights and references for the digitalization and intelligent transformation of home appliance enterprises. © 2024 SPIE.

关键词： Scheduling algorithms

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：