检索结果-内蒙古大学图书馆

43rd Chinese control Conference, CCC 2024

作者： Wang, Xulin Hua, Yongzhao Dong, Xiwang Wang, Shuobo Zhang, Zheng Beihang University Institute of Artificial Intelligence Beijing100191 China Beihang University Institute of Unmanned System Beijing100191 China Beihang University School of Automation Science and Electrical Engineering Beijing100191 China

ISBN: (纸本)9789887581581

This paper proposes a method based on deep reinforcement learning algorithm to solve the collaborative task assignment of multi-UAV s in logistic scenarios. Firstly, the practical logistic scenario is analyzed, a task model based on MDP is established, and the constraints of the logistic assignment problem are given. Secondly, the design and implementation of the state transition function and reward function are implemented based on the established model. This paper averages the final reward into each step to alleviates the problem of reward sparseness in task assignment problem. Then the deep reinforcement learning algorithm Soft Actor-Critic is used to solve the optimization problem. Finally, the experimental results show that the SAC algorithm takes less time to calculate than the traditional algorithm and can have higher average earnings in random environments. © 2024 Technical Committee on control Theory, Chinese Association of automation.

关键词： Deep reinforcement learning

来源：评论

学校读者我要写书评

暂无评论

A Day-Ahead Market Clearing Model Under system Inertia Constraints 16

A Day-Ahead Market Clearing Model Under System Inertia Const...

引用

16th IEEE PES Asia-Pacific Power and Energy engineering Conference, APPEEC 2024

作者： Ma, Yuting Jin, Jiangliang Hao, Liangliang Huang, Qisheng Shen, Liye College of Information Scienc and Technology Donghua University Shanghai China Shandong University Department of Control Science and Engineering Shandong China School of Mechanical Engineering and Automation Harbin Institute of Technology Shanghai China

ISBN: (纸本)9798350386127

We study the market clearing model for electric energy, inertia, and reserve in the day-ahead market, with a particular focus on the virtual inertia provided by wind units. In this paper, we consider synchronous inertia and virtual inertia as sources of system inertia. We incorporate system inertia constraints into the unit commitment (UC) and the economic dispatch (ED) models, and assign economic value to virtual inertia, so as to incentivize wind power to provide virtual inertia. Numerical results demonstrate that the proposed model enhances the participation of wind power units, increases the wind utilization rate and reduces the total costs. © 2024 IEEE.

关键词： Wind power

来源：评论

学校读者我要写书评

暂无评论

Mn-based MXene with high lithium-ion storage capacity

引用

Nano Research 2024年第5期17卷 4181-4191页

作者： Yanyan Wu Dongqing Liu Xiaonan Wang Usman Ghani Muhammad Asim Mushtaq Jinfeng Yang Huarui Sun Panagiotis Tsiakaras Xingke Cai School of Science and Ministry of Industry and Information Technology Key Laboratory of Micro-Nano Optoelectronic Information System Harbin Institute of Technology ShenzhenShenzhen 5180552 China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China Institute for Advanced Study Shenzhen UniversityShenzhen 518060China College of Mechatronics and Control Engineering Shenzhen UniversityShenzhen 518060China Laboratory of Alternative Energy Conversion Systems Department of Mechanical EngineeringSchool of EngineeringUniversity of ThessalyPedion Areos 38834Greece

3d-transition metal(Fe,Co,Ni,and Mn)-based MXene materials have been predicted to demonstrate exceptional electrochemical performance because of their good electrical conductivity and the presence of metallic atoms with multiple charge ***,until now,there have been no reports on MXenes based on Fe,Co,Ni,and Mn,due to the lack of 3d-metal-layered ***,we successfully synthesized the first 3d-transition metal-based MXenes,Mn_(2)CT_(x) by exfoliating a layered precursor derived from the anti-perovskite bulk *** as-prepared Mn_(2)CT_(x) MXene nanosheets were employed as anode materials in lithium-ion batteries,which exhibited stable storage capacity of 764.7 mAh·g^(-1) at 0.5 C,placing its storage capacities at an upper-middle level compared with other reported MXene materials as well as other Mn-based anode ***,this study opens a new avenue for MXene research by synthesizing 3d-transition metal-based MXenes for electrochemical applications.

关键词： Mn_(3)GaC Mn_(2)CT_(x) MXenes lithium-ion battery anode materials negative fading capacity

来源：评论

学校读者我要写书评

暂无评论

A model reduction approach for discrete-time linear time-variant systems with delayed inputs

引用

science China(Information sciences) 2024年第4期67卷 197-217页

作者： Ai-Guo WU Guang-Ren DUAN Yu WANG Jie ZHANG School of Mechanical Engineering and Automation Harbin Institute of Technology(Shenzhen) HIT Wuhu Robot Technology Research Institute Center for Control Science and Technology Southern University of Science and Technology

A model reduction approach is presented for discrete-time linear time-variant input-delayed systems. According to this proposed approach, a dynamical variable is constructed by taking advantage of the current state and historical information of input. It is revealed that the behavior of this dynamical variable is governed by a discrete-time linear delay-free system. It is worth noting that the presented variable transformation does not require the system matrix to be invertible. Based on the reduced delay-free models,stabilizing control laws can be easily obtained for the original delayed system. For the case with a single input delay, the constructed variable is an exact prediction for the future state, and thus the stabilizing control law could be designed by replacing the future state with its prediction. Finally, three discrete-time periodic systems with delayed input are employed to illustrate how to utilize the presented model reduction approaches.

关键词： reduction approach predictor-based feedback time-varying systems delayed input periodic system

来源：评论

学校读者我要写书评

暂无评论

Typical Scene Material Classification Based on Remote Sensing Image Data 12

Typical Scene Material Classification Based on Remote Sensin...

引用

SPIE 12th International Symposium on Multispectral Image Processing and Pattern Recognition, MIPPR 2023

作者： Gao, Yang Dai, Ling Li, Haipeng Zhang, Yini Wang, Feng Beijing Aerospace Automatic Control Institute Beijing100854 China School of Electrical and Automation Engineering Nanjing Normal University Jiangsu Nanjing210023 China School of Artificial Intelligence and Automation Huazhong University of Science and Technology Hubei Wuhan430074 China

ISBN: (数字)9781510675001

ISBN: (纸本)9781510674998

In spectral scene simulation applications, it is necessary to recognize and detect desert satellite images and satellite images containing water. However, previous network models such as AlexNet, VggNet, and GoogleNet have gradually fallen behind the trend of the times. Compared with the latest network models, they not only have slow training speeds but also do not achieve high accuracy. Therefore, this study adopts a series of the latest network models to solve this problem and compare and analyze the results. © 2024 SPIE.

关键词： Semantic Segmentation

来源：评论

学校读者我要写书评

暂无评论

Spacecraft Integrated Pose Determination with Unknown Noise Covariances

Spacecraft Integrated Pose Determination with Unknown Noise ...

引用

International Conference on Guidance, Navigation and control, ICGNC 2022

作者： Chen, Hang Hu, Qinglei Wu, Huai-Ning Duan, Chao Chen, Bin Zhang, Peng School of Automation Science and Electrical Engineering Beihang University Beijing100191 China Beihang Hangzhou Innovation Institute Yuhang Hangzhou310023 China Science and Technology on Aircraft Control Laboratory School of Automation Science and Electrical Engineering Beihang University Beijing100191 China Peng Cheng Laboratory Shenzhen518000 China Beijing Institute of Control Engineering Beijing100094 China

ISBN: (纸本)9789811966125

A novel robust unscented Kalman filter (UKF) is developed for orbiting spacecraft pose determination without knowing prior noise statistical characteristics by using dual quaternion formulation. First, an adjustment coefficient multiplied by a predesigned positive definite matrix is updated iteratively for the process noise covariance adaptation and the moving window of the measurement innovation are adopted for the measurement noise covariance estimation. Then, the adaptation method is incorporated into the dual-quaternion-based UKF procedure where the dual modified Rodrigues parameters (MRPs) are adopted for sigma points description to avoid violating the quaternion normalization constraint. Finally, the effectiveness and practical usefulness of the developed algorithm are verified via numerical simulation examples. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Covariance matrix

来源：评论

学校读者我要写书评

暂无评论

Fault Modeling and Diagnosis for Spacecraft Attitude control system Using Deep Learning

Fault Modeling and Diagnosis for Spacecraft Attitude Control...

引用

International Conference on Guidance, Navigation and control, ICGNC 2022

作者： Guo, Pengyu Hu, Qinglei Wu, Huai-Ning Duan, Chao Chen, Bin Zhang, Peng School of Automation Science and Electrical Engineering Beihang University Beijing100190 China Beihang Hangzhou Innovation Institute Yuhang Hangzhou310023 China Science and Technology on Aircraft Control Laboratory School of Automation Science and Electrical Engineering Beihang University Beijing100190 China Peng Cheng Laboratory Shenzhen518000 China Beijing Institute of Control Engineering Beijing100094 China

ISBN: (纸本)9789811966125

The health monitoring system is significant for the reliable operation of spacecraft. In this paper, various fault models for controlling torque gyroscopes are established, and the learning network is trained with uniformly sampled data of fault. Then a data-driven fault diagnosis method based on deep learning is proposed. The method fully extracts the features to describe the classification of the multi-modal actuator faults, and trains the fault model with a large amount of spacecraft data under actuator faults. Then the rapid detection and classification of actuator faults are realized by the unknown fault model. Specifically, a spacecraft attitude control model is established to generate the sample data for the problem of insufficient fault data. Besides, the stack encoder is used to automatically reduce the data dimension and extract the main features from each set of data. Further, softmax classifier is introduced for fault model training. Finally, numerical simulations are illustrated to verify the reliability of the fault diagnosis method. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Attitude control

来源：评论

学校读者我要写书评

暂无评论

DeepONet-Based Bank Angle Profiles Design for Mars Entry with Actuator Constraints

DeepONet-Based Bank Angle Profiles Design for Mars Entry wit...

引用

2024 China automation Congress, CAC 2024

作者： Tang, Bo Li, Yajing Mei, Jie Wu, Weiren Institute of Space Science and Applied Technology Harbin Institute of Technology Shenzhen Guangdong Shenzhen518055 China Shanghai Institute of Aerospace System Engineering Shanghai201109 China School of Mechanical Engineering and Automation Harbin Institute of Technology Shenzhen Guangdong Shenzhen518055 China

ISBN: (纸本)9798350368604

The determination of the bank angle profile is crucial for Mars atmospheric entry guidance. A significant limitation of existing bank angle profile construction methods is their neglect of the dynamic process of the bank angle. This paper introduces a novel parameterized bank angle profile construction method using deep operator networks (DeepONet). Initially, a design strategy for parameterized bank angle profiles, considering the dynamic characteristics of the bank angle, is presented. The bank angle profile is then modeled as an operator dependent on specific parameters. The DeepONet, which is tailor-made for learning operators, is utilized to construct parameterized bank angle profiles of unknown analytical forms. To handle rapid changes in the bank angle, Fourier feature layers are incorporated into the network to encode the time inputs. Numerical simulations demonstrate that the proposed network can effectively approximate the desired bank angle profile. In the guidance design, using the proposed network-based parameterized bank angle profile can effectively reduce the deviation between the predicted and actual flight states. © 2024 IEEE.

关键词： Parameterization

来源：评论

学校读者我要写书评

暂无评论

Design and analysis of a novel hybrid cooling method of high-speed high-power permanent magnet assisted synchronous reluctance starter/generator in aviation applications

引用

Chinese Journal of Aeronautics 2023年第3期36卷 285-302页

作者： Hong GUO Xu HE Jinquan XU Wei TIAN Xiaofeng DING Laicai JU Dehong LI School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100083China Science and Technology on Aircraft Control Laboratory Beihang UniversityBeijing 100083China Ningbo Innovation Research Institute Ningbo 315800China School of Electrical and Information Engineering Jiangsu UniversityZhenjiang 212013China Beijing Shuguang Aviation Electric Co.LTD Beijing 101300China Aviation Industry Helicopter Design and Research Institute Jingdezhen 333001China

To improve the heat dissipation performance,this paper proposes a novel hybrid cooling method for high-speed high-power Permanent Magnet assisted Synchronous Reluctance Starter/Generator(PMa Syn R S/G)in aerospace *** hybrid cooling structure with oil circulation in the housing,oil spray at winding ends and rotor end surface is firstly proposed for the PMa Syn R S/*** the accurate loss calculation of the PMa Syn R S/G is proposed,which includes air gap friction loss under oil spray cooling,copper loss,stator and rotor core loss,permanent magnet eddy current loss and bearing *** parameter sensitivity analysis of the hybrid cooling structure is proposed,while the equivalent thermal network model of the PMa Syn R S/G is established considering the uneven spraying at the winding ***,the effectiveness of the proposed hybrid cooling method is demonstrated on a 40 k W/24000 r/min PMa Syn R S/G experimental platform.

关键词： Air gap friction loss Oil spray cooling Permanent magnet assisted synchronous reluctance starter/generator Thermal analysis Thermal network model

来源：评论

学校读者我要写书评

暂无评论

Hierarchical reinforcement learning guidance with threat avoidance

引用

Journal of systems engineering and Electronics 2022年第5期33卷 1173-1185页

作者： LI Bohao WU Yunjie LI Guofei State Key Laboratory of Virtual Reality Technology and System Beihang UniversityBeijing 100191China School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China Science and Technology on Aircraft Control Laboratory Beijing 100191China School of Astronautics Northwestern Polytechnical UniversityXi’an 710072China

The guidance strategy is an extremely critical factor in determining the striking effect of the missile operation.A novel guidance law is presented by exploiting the deep reinforcement learning(DRL)with the hierarchical deep deterministic policy gradient(DDPG)*** reward functions are constructed to minimize the line-of-sight(LOS)angle rate and avoid the threat caused by the opposed *** attenuate the chattering of the acceleration,a hierarchical reinforcement learning structure and an improved reward function with action penalty are put *** simulation results validate that the missile under the proposed method can hit the target successfully and keep away from the threatened areas effectively.

关键词： guidance law deep reinforcement learning(DRL) threat avoidance hierarchical reinforcement learning

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：