检索结果-内蒙古大学图书馆

Data Driven Control and Learning systems (DDCLS)

作者： Yan Zhen Mingrui Hao Science and Technology on Complex System Control and Intelligent Agent Cooperative Laboratory Beijing

ISBN: (数字)9781728159225

ISBN: (纸本)9781728159232

To address the failure of precise overload tracking and anti-interference caused by the difficulty of accurate modeling of a complex aircraft, the controller designing method based on deep reinforcement learning is studied. This paper trained the control network based on the Proximal Policy Optimization (PPO), studied the tracking control problem of the aircraft, and accurately tracked the typical command signals. Fixed-point simulation of the aircraft is performed, with results showing that, in presence of aircraft model parameter variation and external disturbance, the controller based on deep reinforcement learning can achieve accurate tracking of overload commands.

关键词： Aircraft Reinforcement learning Aerospace control Atmospheric modeling Aerodynamics Mathematical model Heuristic algorithms

来源：评论

学校读者我要写书评

暂无评论

Model-Based and Data-Driven Control of Event- and Self-Triggered Discrete-Time LTI systems

arXiv

引用

arXiv 2022年

作者： Wang, Xin Berberich, Julian Sun, Jian Wang, Gang Allgöwer, Frank Chen, Jie The Key Laboratory of Intelligent Control and Decision of Complex System Beijing Institute of Technology Beijing10081 China The Beijing Institute of Technology Chongqing Innovation Center Chongqing401120 China The University of Stuttgart Institute for Systems Theory and Automatic Control Stuttgart70550 Germany The Department of Control Science and Engineering Tongji University Shanghai201804 China The State Key Lab of Intelligent Control and Decision of Complex Systems School of Automation Beijing Institute of Technology Beijing100081 China

The present paper considers the model-based and data-driven control of unknown linear time-invariant discretetime systems under event-triggering and self-triggering transmission schemes. To this end, we begin by presenting a dynamic event-triggering scheme (ETS) based on periodic sampling, and a discrete-time looped-functional approach, through which a model-based stability condition is derived. Combining the model-based condition with a recent data-based system representation, a data-driven stability criterion in the form of linear matrix inequalities (LMIs) is established, which also offers a way of co-designing the ETS matrix and the controller. To further alleviate the sampling burden of ETS due to its continuous/periodic detection, a self-triggering scheme (STS) is developed. Leveraging pre-collected input-state data, an algorithm for predicting the next transmission instant is given, while achieving system stability. Finally, numerical simulations showcase the efficacy of ETS and STS in reducing data transmissions as well as of the proposed co-design methods. Copyright © 2022, The Authors. All rights reserved.

关键词： Linear matrix inequalities

来源：评论

学校读者我要写书评

暂无评论

UAV Decision-making system Based on the Rough Set theory and the Optimal Genetic Algorithm

UAV Decision-making System Based on the Rough Set theory and...

引用

IEEE International Conference on Unmanned systems (ICUS)

作者： Wendi Sun Mingrui Hao Science and Technology on Complex System Control and Intelligent Agent Cooperative Laboratory Beijing

ISBN: (数字)9781728180250

ISBN: (纸本)9781728180267

Air combat decision-making is a critical issue in Unmanned Air Vehicle automatic combat. Precise and efficient maneuvering strategies are extremely important for the final victory. Quantitative research has been conducted on the maneuver strategy. In this study, a knowledge-based maneuver action library for air combat was established by the Rough Set Theory, which can help quick response to the battlefield situation. Since not all influence factors of battlefield situation are that significant and the computing source is finite, the rough set model was simplified to increase reaction rate. This paper introduced an advanced genetic algorithm to reduce the attributes of rough sets, taking the purity of each attribute into account, so as to make the condition attribute as close to 1 or 0 as possible. As a result, the reducing accuracy of the whole decision-making system is improved. The simulation results show that the rough set model built in this paper is efficient, feasible and reasonable, and the algorithm can support the air combat maneuver strategy decision system.

关键词： Intelligent agents Conferences complex systems systems simulation Rough sets Power system dynamics Intelligent control

来源：评论

学校读者我要写书评

暂无评论

Photo-controlled degradation of PLGA/Ti3C2 hybrid coating on Mg-Sr alloy using near infrared light

引用

Bioactive Materials 2021年第2期6卷 568-578页

作者： Li Liu Bo Huang Xiangmei Liu Wei Yuan Yufeng Zheng Zhaoyang Li Kelvin Wai Kwok Yeung Shengli Zhu Yanqin Liang Zhenduo Cui Shuilin Wu Hubei Key Laboratory of Polymer Materials Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional MaterialsSchool of Materials Science&EngineeringHubei UniversityWuhan430062China State Key Laboratory for Turbulence and Complex System and Department of Materials Science and Engineering College of EngineeringPeking UniversityBeijing100871China The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China School of Materials Science&EngineeringTianjin UniversityTianjin300072China Department of Orthopaedics&Traumatology Li Ka Shing Faculty of MedicineThe University of Hong KongPokfulamHong Kong999077China

A PLGA/Ti_(3)C_(2) hybrid coating was successfully deposited on the surface of magnesium-strontium(Mg-Sr)*** with the corrosion current density(icorr)of the Mg-Sr alloy(7.13×10^−5 A/cm^2),the modified samples(Mg/PLGA/Ti_(3)C_(2))was lower by approximately four orders of magnitude(7.65×10^−9 A/cm^2).After near infrared 808 nm laser irradiation,the icorr of the modified samples increased to 3.48×10^−7 A/cm^*** mechanism is that the local hyperthermia induced the free volume expansion of PLGA,and the increase in intermolecular gap enhanced the penetration of ***,the cytotoxicity study showed that the hybrid coating endowed the Mg-Sr alloy with enhanced biocompatibility.

关键词： Magnesium Ti_(3)C_(2)Mxene Coating Photoresponsive Degradation

来源：评论

学校读者我要写书评

暂无评论

Lift Analysis and Anti-Rolling Control system Design of Magnus Rotating Roll Stabilizer with Full Speed

SSRN

引用

SSRN 2023年

作者： Sun, Mingxiao Lian, Houxin Luan, Tiantian Zhang, Xiaoshuang Wu, Baoqi Wang, Hanxu School of Automation Harbin University of Science and Technology No.52 Xuefu Road Nangang District Heilongjiang Province Harbin City150080 China Heilongjiang Provincial Key Laboratory of Complex Intelligent System and Integration Harbin University of Science and Technology No.52 Xuefu Road Nangang District Heilongjiang Province Harbin City150080 China Key Laboratory of Advanced Manufacturing and Intelligent Technology Ministry of Education Harbin University of Science and Technology No.52 Xuefu Road Nangang District Heilongjiang Province Harbin City150080 China Jiangsu Automation Research Institute No. 18 Shenghu Road Haizhou District Jiangsu Province Lianyungang City222000 China

To shorten the deviation between the roll motion model of ships equipped with Magnus rotating roll stabilizer and actual motion, a full-speed lift calculation method is proposed. By combining the micro-element method with the mechanism of the Magnus effect force, the lift law of the rotating stabilizer in different modes could be obtained theoretically. Subsequently, correction factors are fitted for different operating conditions to correct the full-speed lift model through hydrodynamic simulation analysis of the stabilizer. In addition, RBF neural networks are also introduced to address the uncertainty and nonlinearity of ship models under high winds and waves. This network is used to predict nonlinear ship models with uncertainty to optimize the anti-rolling effect of the sliding mode controller. As a result, the corrected lift model can accurately predict the real-time lift changes of the Magnus rotating stabilizer in both rotating and swing-rotating modes. The maximum deviation rate doesn’t exceed 8.5% compared to the simulation. The adaptability of the anti-rolling control system is improved. And the sliding mode control algorithm based on RBF neural network has the outstanding anti-rolling ability under various conditions, with a maximum anti-rolling efficiency of over 98%. © 2023, The Authors. All rights reserved.

关键词： Sliding mode control

来源：评论

学校读者我要写书评

暂无评论

The input pattern problem on deep learning applied to signal analysis and processing to achieve fault diagnosis

引用

science China(Information sciences) 2019年第12期62卷 269-271页

作者： Hao REN Nan LI Yi CHAI Jianfeng QU Qiu TANG Lei HUANG School of Automation Chongqing University Key Laboratory of Complex System Safety and Control Ministry of Education School of Computer Science and Technology Huaiyin Normal University

Dear editor,Generally, one of the most prominent features of modern industrial systems is the massive amount of data collected from various sensors, which poses great challenges to traditional methods of captur-

关键词： The input pattern problem on deep learning applied to signal analysis and processing to achieve fault diagnosis

来源：评论

学校读者我要写书评

暂无评论

Key Techniques on Unified Identity Authentication in OpenMBEE Integration

Key Techniques on Unified Identity Authentication in OpenMBE...

引用

IEEE International Conference on Electronics and Communication Engineering (ICECE)

作者： Junjie Xue Junhua Zhou Guoqiang Shi Chaoqun Feng Penghua Liu Hongyan Quan Beijing Complex Product Advanced Manufacturing Engineering Research Center Beijing Simulation Center Beijing China State Key Laboratory of Intelligent Manufacturing System Technology Beijing Institute of Electronic System Engineering Beijing China Beijing Simulation Center Science and Technology on Space System Simulation Laboratory Beijing China School of Computer Science and Technology East China Normal University Shanghai China

ISBN: (纸本)9781728188577

In order to make full use of the concept of model-based systems engineering (MBSE) and the collaborative design capability of the open model-based engineering environment (OpenMBEE) in establishing complex product development platform, we propose an effective method to solve the problem of unified identity authentication in OpenMBEE integration. The proposed method is based on the Model View Controller(MVC) architecture in OpenMBEE, which has the characteristics strong plasticity and can be benefit for expanding the function in the controller layer. In our research, we make full use of the Software Development Kit (SDK) of OpenMBEE to expand the existing functions in the controller layer, and increase the function of communicating with the application development platform, then realize the function of sharing user authentication information between the development platform and OpenMBEE. After expansion, the system includes three modules, including the Front-end Service Module(FSM), MQ based Information Receiving Service Module(IFRSM), and the OpenMBEE Backend Server Module(BSM). The effectiveness of the proposed strategies is verified by some practical instances, which verifies that our study can provide an effective design idea for the identity authentication in OpenMBEE integration.

关键词： Analytical models Databases Authentication Computer architecture Control systems Data models Software

来源：评论

学校读者我要写书评

暂无评论

3d Path Planning for Uuv Based on Artificial Potential Field Grid Method

SSRN

引用

SSRN 2023年

作者： Sun, Mingxiao Zhen, Liqiang Luan, Tiantian Zhang, Xiaoshuang Wu, Baoqi School of Automation Harbin University of Science and Technology No.52 Xuefu Road Nangang District Heilongjiang Province Harbin City150080 China Heilongjiang Provincial Key Laboratory of Complex Intelligent System and Integration Harbin University of Science and Technology No.52 Xuefu Road Nangang District Heilongjiang Province Harbin City150080 China Key Laboratory of Advanced Manufacturing and Intelligent Technology Ministry of Education Harbin University of Science and Technology No.52 Xuefu Road Nangang District Heilongjiang Province Harbin City150080 China Jiangsu Automation Research Institution No. 18 Shenghu Road Haizhou District Jiangsu Province Lianyungang City222000 China

The artificial potential field approach (APFA) has the advantages of short computation time and easy implementation, which is widely used in path planning. The problems of local oscillation and susceptibility to local minima for APFA are considered in three dimensions (3D) path planning application of unmanned underwater vehicle (UUV), and the artificial potential field grid method (APFG) is proposed. Firstly, the obstacles are rasterized in 3D map. The repulsive points are attached to the surface of the raster to change the repulsive influence range, which can compensate the shortcoming of the traditional APFA modelling idealization leading to the long planning path. At the same time, the repulsion function on the grid surface is changed so that the potential field on the grid surface is parallel to the grid surface, which will solve the local oscillation problem in the path planning of UUV. Then, virtual target points are introduced to avoid the UUV falling into local optimization. The simulations show that APFG effectively overcomes the shortcomings of local oscillations and the tendency to fall into local minima for UUV in 3D path planning, and the path planning is smooth and efficient. © 2023, The Authors. All rights reserved.

关键词： Motion planning

来源：评论

学校读者我要写书评

暂无评论

The Hybrid Path Planning Algorithm Based on Improved Artificial Potential Field and Grid Method for Uuv in 3d Environments

SSRN

引用

SSRN 2023年

关键词： Unmanned underwater vehicles

来源：评论

学校读者我要写书评

暂无评论

Activation of Topological Defects Induces a Brittle-to-Ductile Transition in EpithelialMonolayers

Activation of Topological Defects Induces a Brittle-to-Ducti...

引用

第十九次中国暨国际生物物理大会

作者： Yixia Chen Qigan Gao Jingchen Li Fangtao Mao Ruowen Tang Hongyuan Jiang Hefei National Laboratory for physical Science at the Microscale CAS Key Laboratory of Mechanical Behavior and Design of MaterialsCAS Center for Excellence in Complex System MechanicsDepartment of Modern MechanicsUniversity of Science and Technology of China

Epithelial monolayer is subjected to various mechanical forces,such as stretching,shearing and ***,its mechanical response to external loadings is essential for its biological ***,the mechanism of the fracture failure of epithelial monolayer remains poorly ***,by introducing a new type of topological transition,i.e.,detach transition or T4 transition,we developed a modifiedcellular vertex model to investigate the rupture of cell monolayer.

关键词： Activation of Topological Defects Induces a Brittle-to-Ductile Transition in EpithelialMonolayers

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：