检索结果-内蒙古大学图书馆

A Tutorial on Quantized Feedback control

IEEE/CAA Journal of Automatica Sinica 2024年第1期11卷 5-17页

作者： Minyue Fu IEEE the School of System Design and Intelligent Manufacturing Shenzhen Key Laboratory of Control Theory and Intelligent Systems and Centre for Control Science and TechnologySouthern University of Science and TechnologyShenzhen 518055China

In this tutorial paper, we explore the field of quantized feedback control, which has gained significant attention due to the growing prevalence of networked control systems. These systems require the transmission of feedback information, such as measurements and control signals, over digital networks, presenting novel challenges in estimation and control design. Our examination encompasses various topics, including the minimal information needed for effective feedback control, the design of quantizers, strategies for quantized control design and estimation,achieving consensus control with quantized data, and the pursuit of high-precision tracking using quantized measurements.

关键词： Consensus control high-precision control networked control quantized estimation quantized feedback control robust control

来源：评论

学校读者我要写书评

暂无评论

Whittle’s Index Based Sensor Scheduling for Multiprocess systems Under DoS Attacks

引用

Journal of systems Science & Complexity 2024年第1期37卷 329-350页

作者： CAI Zai DING Kemi Shenzhen Key Laboratory of Control Theory and Intelligent Systems Southern University of Science and TechnologyShenzhen 518055China.

In this paper,the authors consider how to design defensive countermeasures against DoS attacks for remote state estimation of multiprocess *** each system,a sensor will measure its state and transmits the data packets through an unreliable channel which is vulnerable to be jammed by an *** limited communication bandwidth,only a subset of sensors are allowed for data transmission,and how to select the optimal one to maximize the accuracy of remote state estimation is the focus of the proposed *** authors first formulate this problem as a Markov decision process and investigate the existence of optimal ***,the authors demonstrate the piecewise monotonicity structure of optimal *** the difficulty of obtaining an optimal policy of large-scale problems,the authors develop a suboptimal heuristic policy based on the aforementioned policy structure and Whittle’s ***,a closed form of the indices is derived in order to reduce implementation complexity of proposed scheduling policy and numerical examples are provided to illustrate the proposed developed results.

关键词： DoS attacks Kalman filter remote state estimation Whittle’s index.

来源：评论

学校读者我要写书评

暂无评论

Stability and Stabilization of Sampled-Data Based LFC for Power systems:A Data-Driven Method

引用

IEEE/CAA Journal of Automatica Sinica 2025年第1期12卷 291-293页

作者： Yu-Long Fan Chuan-Ke Zhang Yong He the School of Automation China University of Geosciences the Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems the Engineering Research Center of Intelligent Technology for Geo-Exploration Ministry of Education IEEE

Dear Editor,This letter is concerned with stability analysis and stabilization design for sampled-data based load frequency control(LFC) systems via a data-driven method. By describing the dynamic behavior of LFC systems based on a data-based representation, a stability criterion is derived to obtain the admissible maximum sampling interval(MSI) for a given controller and a design condition of the PI-type controller is further developed to meet the required MSI. Finally, the effectiveness of the proposed methods is verified by a case study.

关键词： Sampled data control systems

来源：评论

学校读者我要写书评

暂无评论

Constrained temperature and relative humidity predictive control:Agricultural greenhouse case of study

引用

Information Processing in Agriculture 2024年第3期11卷 409-420页

作者： Hafsa Hamidane Samira EL Faiz Iliass Rkik Mohamed El Khayat Mohammed Guerbaoui Abdelali Ed-Dahhak Abdeslam Lachhab Computer Engineering and Intelligent Electrical Systems Laboratory ModelingMaterials and Control of Systems TeamHigher School of TechnologyMoulay Ismail University of MeknesMorocco

The importance of Model Predictive control(MPC)has significant applications in the agricultural industry,more specifically for greenhouse’s control ***,the complexity of the greenhouse and its limited prior knowledge prevent an exact mathematical description of the *** methods provide a promising solution to this issue through their capacity to identify the system’s comportment using the fit between model output and observed *** this paper,we introduce an application of Constrained Model Predictive control(CMPC)for a greenhouse temperature and relative *** this purpose,two Multi Input Single Output(MISO)systems,using Numerical Subspace State Space System Identification(N4SID)algorithm,are firstly suggested to identify the temperature and the relative humidity comportment to heating and ventilation *** this sense,linear state space models were adopted in order to evaluate the robustness of the control *** the system is identified,the MPC technique is applied for the temperature and the humidity *** results show that the regulation of the temperature and the relative humidity under constraints was guaranteed,both parameters respect the ranges 15℃≤T_(int)≤30℃and 50%≤H_(int)≤70%*** the other hand,the control signals uf and uh applied to the fan and the heater,respect the hard constraints notion,the control signals for the fan and the heater did not exceed 0≤uf≤4.3 Volts and 0≤uh≤5 Volts,respectively,which proves the effectiveness of the MPC and the tracking ***,we show that with the proposed technique,using a new optimization toolbox,the computational complexity has been significantly *** greenhouse in question is devoted to Schefflera Arboricola cultivation.

关键词： Constrained model predictive control Greenhouse MISO systems Optimization Relative humidity Temperature

来源：评论

学校读者我要写书评

暂无评论

Survival of People Living with HIV/AIDS from Pre-ART Era to Treat-all Era—China,1985–2022

引用

China CDC weekly 2024年第48期6卷 1264-1270页

作者： Shi Wang Houlin Tang Decai Zhao Chang Cai Yichen Jin QianQian Qin Fangfang Chen Liping Fei Hehe Zhao Zhongnian Yang Fan Lyu National Center for AIDS/STD Control and Prevention Chinese Center for Disease Control and PreventionBeijingChina National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases National Center for AIDS/STD Control and PreventionChinese Center for Disease Control and PreventionBeijingChina

Introduction:A comprehensive analysis of nationwide survival trends for people living with human immunodeficiency virus/acquired immunodeficiency syndrome(HIV/AIDS,PLWHA)from the initial reported case to present has not been *** study evaluated the survival outcomes of PLWHA reported in China from 1985 to ***:We analyzed data from PLWHA recorded in the National HIV/AIDS Comprehensive Response Information Management System from 1985 to *** rates were calculated using Kaplan-Meier curves,and factors associated with survival time were analyzed using Cox proportional hazard ***:Progressive relaxation of antiretroviral therapy initiation criteria led to significant improvements in survival rates across different diagnostic periods in *** 1-year and 5-year cumulative survival rates increased from 85.2%and 66.1%in the 1985–2003 cohort to 91.1%and 81.4%in the 2016–2022 *** proportional hazard analysis revealed elevated mortality risks among males,individuals aged≥65 years,those with injection drug use or other transmission routes,hospital-tested patients,and those with lower CD4 counts at diagnosis or without ***:Antiretroviral therapy has effectively reduced mortality risk among PLWHA in *** efforts should focus on expanding HIV testing to reduce the proportion of late diagnoses with lower CD4 counts and providing targeted,differentiated services for older populations to further decrease mortality risk among PLWHA.

关键词： Survival HIV/AIDS mortality

来源：评论

学校读者我要写书评

暂无评论

Evolution of HIV Epidemic and Emerging Challenges—China,1989–2023

引用

China CDC weekly 2024年第48期6卷 1251-1256页

作者： Chang Cai Houlin Tang Dongmin Li Qianqian Qin Fangfang Chen Yichen Jin Fan Lyu National Center for AIDS/STD Control and Prevention Chinese Center for Disease Control and PreventionBeijingChina National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases National Center for AIDS/STD Control and PreventionChinese Center for Disease Control and PreventionBeijingChina

Introduction:This study aimed to provide a comprehensive analysis of the human immunodeficiency virus(HIV)epidemiological landscape in China through a historical review and current ***:Data were extracted from China’s HIV/AIDS Comprehensive Response Information Management System(CRIMS).Transmission patterns across different phases were visualized using stacked area *** correlations between transmission routes were analyzed using scatter plots and Pearson correlation *** extent and trends of HIV spread among the general population were evaluated using Venn diagrams and Cochran-Armitage ***:The HIV epidemic in China evolved through four distinct phases:injecting drug user(IDU)dominated(1989–1994),former plasma donor(FPD)outbreak(1995–2005),sexual transmission dominance(2006–2014),and general population spread(2015–present).A strong correlation was observed between provinces reporting high numbers of IDU cases and those with elevated heterosexual transmission(r=0.88,P<0.001).Between 2015 and 2023,393,926 cases were identified among the general population through non-marital and non-commercial heterosexual contact(NMNCHC).The proportion of general population cases among heterosexual transmissions increased significantly from 46.2%to 55.7%(Z=42.7,P<0.001).Conclusion:The significant spread of HIV into the general population necessitates the development of targeted prevention strategies for both high-risk and general populations to address emerging epidemiological challenges.

关键词： prevention elevated IDU

来源：评论

学校读者我要写书评

暂无评论

Linear-quadratic and norm-bounded combined differential game guidance scheme with obstacle avoidance for attacking defended aircraft in three-player engagement

引用

Defence Technology（防务技术） 2024年第12期42卷 136-155页

作者： Xintao Wang Ming Yang Songyan Wang Mingzhe Hou Tao Chao Control and Simulation Center Harbin Institute of TechnologyHarbin 150001China National Key Laboratory of Complex System Control and Intelligent Agent Cooperation Harbin 150001China Center for Control Theory and Guidance Technology Harbin Institute of TechnologyHarbin 150001China

A differential game guidance scheme with obstacle avoidance,based on the formulation of a combined linear quadratic and norm-bounded differential game,is designed for a three-player engagement scenario,which includes a pursuer,an interceptor,and an *** confrontation between the players is divided into four phases(P1-P4)by introducing the switching time,and proposing different guidance strategies according to the phase where the static obstacle is located:the linear quadratic game method is employed to devise the guidance scheme for the energy optimization when the obstacle is located in the P1 and P3 stages;the norm-bounded differential game guidance strategy is presented to satisfy the acceleration constraint under the circumstance that the obstacle is located in the P2 and P4 ***,the radii of the static obstacle and the interceptor are taken as the design parameters to derive the combined guidance strategy through the dead-zone function,which guarantees that the pursuer avoids the static obstacle,and the interceptor,and attacks the ***,the nonlinear numerical simulations verify the performance of the game guidance strategy.

关键词： Active defense aircraft Differential game theory Three-player confrontation Energy optimization Acceleration constraint Obstacle avoidance

来源：评论

学校读者我要写书评

暂无评论

Hybrid Dynamic Variables-Dependent Event-Triggered Fuzzy Model Predictive control

引用

IEEE/CAA Journal of Automatica Sinica 2024年第3期11卷 723-733页

作者： Xiongbo Wan Chaoling Zhang Fan Wei Chuan-Ke Zhang Min Wu IEEE the School of Automation China University of Geosciencesthe Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systemsand the Engineering Research Center of Intelligent Technology for Geo-ExplorationMinistry of EducationWuhan 430074China

This article focuses on dynamic event-triggered mechanism(DETM)-based model predictive control(MPC) for T-S fuzzy systems.A hybrid dynamic variables-dependent DETM is carefully devised,which includes a multiplicative dynamic variable and an additive dynamic *** addressed DETM-based fuzzy MPC issue is described as a “min-max” optimization problem(OP).To facilitate the co-design of the MPC controller and the weighting matrix of the DETM,an auxiliary OP is proposed based on a new Lyapunov function and a new robust positive invariant(RPI) set that contain the membership functions and the hybrid dynamic variables.A dynamic event-triggered fuzzy MPC algorithm is developed accordingly,whose recursive feasibility is analysed by employing the RPI *** the designed controller,the involved fuzzy system is ensured to be asymptotically *** examples show that the new DETM and DETM-based MPC algorithm have the advantages of reducing resource consumption while yielding the anticipated performance.

关键词： Dynamic event-triggered mechanism(DETM) hybrid dynamic variables model predictive control(MPC) robust positive invariant(RPI)set T-S fuzzy systems

来源：评论

学校读者我要写书评

暂无评论

Prioritizing the People in HIV Prevention:Transforming Data into Effective Policies and Actions

引用

China CDC weekly 2024年第48期6卷 1249-1250页

作者： Fan Lyu National Center for AIDS/STD Control and Prevention Chinese Center for Disease Control and PreventionBeijingChina National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases National Center for AIDS/STD Control and PreventionChinese Center for Disease Control and PreventionBeijingChina

In the contemporary landscape of global health challenges,human immunodeficiency virus(HIV)and acquired immunodeficiency syndrome(AIDS)remain significant public health concerns both domestically and *** UNAIDS estimates indicate that by the end of 2023,approximately 39.9 million people were living with HIV/AIDS globally,with 1.3 million new infections and 630,000 deaths(1).While current prevention and treatment strategies have contributed to a steady decline in new infections and mortality rates,we remain considerably distant from achieving the ambitious target of“ending the AIDS epidemic by 2030”.

关键词： prevention mortality globally

来源：评论

学校读者我要写书评

暂无评论

Brockett's Second Example:A FAS Approach Treatment

引用

Journal of systems Science & Complexity 2023年第5期36卷 1789-1808页

作者： DUAN Guang-Ren Shenzhen Key Laboratory of Control Theory and Intelligent Systems Southern University of Science and TechnologyShenzhen 518055China Center for Control Theory and Guidance Technology Harbin Institute of TechnologyHarbin 150001China

In this paper,several equivalent forms of the well-known Brockett's second example system are firstly *** stabilization of the system is then treated in the fully actuated system approach.A simple continuous time-invariant sub-stabilizing controller is designed,and the corresponding region of attraction is *** a result,all trajectories of the system starting from the characterized region of attraction are driven exponentially to the *** the region of attraction is very large,the designed sub-stabilizing controller can be directly useful in many practical *** cases where the initial values are indeed needed to be chosen out of the region of attraction,extremely simple pre-controllers can be designed,which drive the system trajectories into the designed region of attraction.A simulation of the designed control system is carried out to show the effect of the proposed approach.

关键词： Brockett integrator continuous time-invariant controllers fully actuated system approach region of attraction sub-stabilization

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：