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Fault detection filter design for switched fuzzy systems with average dwell time

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Fault detection filter design for switched fuzzy systems wit...

第25届中国控制与决策会议

作者： Jian Li qingyu su Huimin Wang School of Automation Engineering Northeastern Dingli University College of Information Science and Engineering Northeastern University

ISBN: (纸本)9781467355339

The problem of fault detection filters for switched fuzzy systems with average dwell time （ADT）. Each subsystem is described by affine fuzzy model, and the fuzzy rule is established by means of the system output, that is, the system outputs have been chosen as premise variables to guarantee that the model changes in the advance region partitioning as the output. Weighted 2 performance for switched affine fuzzy systems with ADT is firstly presented. The problem of fault detection synthesis is converted into an robust filtering problem. With the aid of multiple Lyapunov functions and Projection Lemma, the condition is given in terms of linear matrix inequalities （LMIs）.

关键词： Fault detection filter switched systems average dwell time.

Nonlinear adaptive control of generating set steam valve for power systems 36

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Nonlinear adaptive control of generating set steam valve for...

第36届中国控制会议

作者： qingyu su Wanzhen Quan Weiwei Quan School of Automation Engineering Northeast Electric Power University State Grid Power supply Company of Anqing

ISBN: (纸本)9781538629185

As strongly nonlinear, dynamic,multidimensional and large scale systems, power systems in operation are always influenced by the external and internal disturbances;and thus the serious threat to stable operation of systems exists. In this paper, based on the three order mathematical model of single machine infinite systems with valve control and under the conditions that systems have unknown damping coefficient, Storage functions of control system are constructed on the basis of improved adaptive backstepping and Lyapunov methods. A nonlinear adaptive robust controller and a parameter update law are *** derived controller can not only ensure that the system states are bounded and keep the nonlinearity of power systems and the real-time parameter estimation but also improved the speed of parameter identification.

关键词： Power systems nonlinear improved adaptive backstepping Lyapunov parameter identification

Finite-Time Adaptive State Tracking for Linear Systems with Matched and Unmatched Cases 36

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Finite-Time Adaptive State Tracking for Linear Systems with ...

第36届中国控制会议

作者： Dongsheng Chen Zhiqiang Wang qingyu su School of Automation Engineering Northeast Electric Power University

ISBN: (纸本)9781538629185

The problem of the state tracking over a flnite-time interval is concerned in this *** on the average dwell-time method,both matched and unmatched cases are considered in the *** make the state tracking error is flnite-time bounded and the considered system achieves a weighted H performance for the exogenous disturbance,the switching law is designed by the states *** conditions for the design of switching law are formulated by the aid of error Lyapunov-like function.A varied average dwell-time is obtained that it is less than the traditional average dwell-time over a flnite-time ***,a numerical example is given to illustrate the effectiveness of the proposed design method.

关键词： State Tracking Control Error Finite-time Bounded Average Dwell-time

Analysis of cascading failures of power cyber-physical systems considering false data injection attacks

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Global Energy Interconnection 2021年第2期4卷 204-213页

作者： Jian Li Chaowei sun qingyu su Northeast Electric Power University Jilin132000P.R.China

This study considers the performance impacts of false data injection attacks on the cascading failures of a power cyber-physical system,and identifies vulnerable ***,considering the monitoring and control functions of a cyber network and power flow characteristics of a power network,a power cyber-physical system model is ***,the influences of a false data attack on the decision-making and control processes of the cyber network communication processes are studied,and a cascading failure analysis process is proposed for the cyber-attack *** addition,a vulnerability evaluation index is defined from two perspectives,i.e.,the topology integrity and power network operation ***,the effectiveness of a power flow betweenness assessment for vulnerable nodes in the cyberphysical environment is verified based on comparing the node power flow betweenness and vulnerability assessment ***,an IEEE14-bus power network is selected for constructing a power cyber-physical *** show that both the uplink communication channel and downlink communication channel suffer from false data attacks,which affect the ability of the cyber network to suppress the propagation of cascading failures,and expand the scale of the cascading *** vulnerability evaluation index is calculated for each node,so as to verify the effectiveness of identifying vulnerable nodes based on the power flow betweenness.

关键词： Power cyber-physical systems False date injection attack Cascading failure Vulnerability Power flow betweenness.

Identification of critical nodes for cascade faults of grids based on electrical PageRank

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Global Energy Interconnection 2021年第6期4卷 587-595页

作者： qingyu su Cong Chen Zhenglong sun Jian Li Northeast Electric Power University Jilin 132000P.R.China Israel Institute of Technology Haifa 32000Israel

In this paper,the electrical PageRank method is proposed to identify the critical nodes in a power grid considering cascading faults as well as directional *** method can rapidly and accurately focus on the critical nodes in the power ***,the proposed method simulates the scenario in a grid after a node is attacked by cascading *** load loss of the grid is ***,the electrical PageRank algorithm is *** nodal importance of a grid is determined by considering cascading faults as well as directional *** electrical PageRank values of the system nodes are obtained based on the proposed electrical PageRank algorithm and ranked to identify the critical nodes in a ***,the effectiveness of the proposed method is verified using the IEEE39 node *** proposed method is highly effective in preventing the occurrence of cascading faults in power systems.

关键词： Security and stability Cascading failures Electrical PageRank algorithm Critical nodes

Resilient Control of Multi-area Load Frequency Control Systems under False Data Injection Attacks

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Resilient Control of Multi-area Load Frequency Control Syste...

第43届中国控制会议

作者： Jian Li Yaqin Bai qingyu su School of Automation Engineering Northeast Electric Power University Jilin Provincial Key Laboratory of Advanced Control Technology of Smart Energy

This paper investigates the problem of false data injection attacks（FDIA） occurring at the multi-area load frequency control（LFC） system actuator.A resilient control strategy based on adaptive RBF observer is ***,an adaptive RBF observer is designed in combination with Luenberger observer and RBF neural network to achieve observation of states and estimation of ***,an H state-feedback elasticity controller is implemented based on the feedback signal from the adaptive RBF ***,to verify the effectiveness of the proposed method,simulation experiments are carried out based on the two-region load frequency control system.

关键词： Multi-Area LFC Systems FDIA Adaptive RBF Observer Resilient Control

基于协同交互型观测器的虚假数据注入攻击信号重构方法

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兵工学报 2023年第11期44卷 3359-3368页

作者：黄鑫畅晨旭李小杭苏庆宇东北电力大学自动化工程学院吉林吉林132012 北方信息控制研究院集团有限公司信息总体部江苏南京211100

针对信息物理系统中传感器和执行器虚假数据注入攻击现象,利用观测器技术研究对该攻击信号的重构问题。由于防守者难以直接利用攻击信号的估计误差,导致难以准确估计攻击信号,借助系统输入输出数据建立包含攻击估计误差信息的虚拟辅助系... 详细信息

针对信息物理系统中传感器和执行器虚假数据注入攻击现象,利用观测器技术研究对该攻击信号的重构问题。由于防守者难以直接利用攻击信号的估计误差,导致难以准确估计攻击信号,借助系统输入输出数据建立包含攻击估计误差信息的虚拟辅助系统,利用协同交互策略构建一类协同交互型观测器,该观测器通过与虚拟辅助系统间的协同交互,利用攻击信号的估计误差信息来提高攻击信号的重构精度,获得更加准确的攻击信号。利用李雅普诺夫方法证明了重构的攻击信号收敛于真实攻击信号周围的紧集内。通过数值仿真验证了新方法的有效性。

关键词：信息物理系统虚假数据注入攻击攻击重构协同交互型观测器

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基于变论域模糊控制的无刷直流电机转速问题

电机与控制应用 2017年第11期44卷 6-11页

作者：赵天宇苏庆宇东北电力大学自动化工程学院吉林吉林132012

无刷直流电机(BLDCM)是一种多变量、强耦合、非线性、时变的复杂控制系统。由于其采用传统的PID控制时很难满足需要,所以针对BLDCM精确调速的控制问题,在基于传统PID控制上引入模糊控制设计了模糊PID控制,并在此基础上应用变论域的方法... 详细信息

无刷直流电机(BLDCM)是一种多变量、强耦合、非线性、时变的复杂控制系统。由于其采用传统的PID控制时很难满足需要,所以针对BLDCM精确调速的控制问题,在基于传统PID控制上引入模糊控制设计了模糊PID控制,并在此基础上应用变论域的方法,设计了变论域模糊PID控制器。以BLDCM为模型,通过MATLAB建立其仿真模型。仿真和试验结果表明,采用变论域模糊PID控制的BLDCM与传统控制的BLDCM相比,具有响应速度快、超调小、控制精度高等优点。

关键词：无刷直流电机调速控制变论域模糊PID控制 MATLAB仿真

多重因子分析技术在食品饮料行业感官分析中的应用

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食品工业科技 2021年第13期42卷 427-434页

作者：许晓青苏庆宇王冬宋昊朱保庆中国人民大学统计学院北京100872 北京林业大学生物科学与技术学院食品科学系林业食品加工与安全北京市重点实验室北京100083 北京一轻食品集团有限公司北京102600 北京一轻研究院北京101111

多重因子分析是一种多元统计分析手段,能够用于描述和总结具有复杂结构和多方来源的多元数据。该方法同主成分分析具有密切联系,在食品、饮料和化妆品的感官分析以及市场调查、流行病学、生态学等领域广泛应用。本文主要介绍了多重因子... 详细信息

多重因子分析是一种多元统计分析手段,能够用于描述和总结具有复杂结构和多方来源的多元数据。该方法同主成分分析具有密切联系,在食品、饮料和化妆品的感官分析以及市场调查、流行病学、生态学等领域广泛应用。本文主要介绍了多重因子分析方法的原理和步骤,并结合近年来已经报道的研究和案例描述,并总结了该方法在分析投影地图或Napping数据、自由选择剖面数据以及通过挖掘感官数据和喜好数据探索消费者喜好驱动因素的分析上的应用,以期对感官分析从业者和相关领域科学研究人员提供借鉴。

关键词：多重因子分析投影地图 Napping 自由选择剖面偏好地图