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New stability conditions of CPSs with multiple transportation channels under DoS attacks

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Science China(Information Sciences) 2022年第11期65卷 301-302页

作者： Jumei WEI Xueyan YAN xunlin zhu Mingliang XU Rui MA Haiping DU School of Mathematics and Statistics Zhengzhou University Center for Interdisciplinary Information Science Research Zhengzhou University School of Electrical Computer and Telecommunications Engineering University of Wollongong

Dear editor,Cyber-physical systems(CPSs) are widely studied owing to their cyclopedic practical value in some fields. In an unreliable network environment, transmission channels may be subject to denial-of-service(Do ...

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Dissipativity Enforcement of Linear Discrete-time Systems via LMI-based Optimization

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Dissipativity Enforcement of Linear Discrete-time Systems vi...

第25届中国控制与决策会议

作者： Xin Du Chao Wang xunlin zhu Yan Peng School of Mechatronic Engineering and Automation Shanghai University xunlin zhu is with the Department of Mathematics Zhengzhou University

ISBN: (纸本)9781467355322

This paper introduces a new LMI-based approach to dissipativity enforcement for finite frequency linear discrete-time system. Different from the conventional entire-frequency H∞ approximation performance specification, finite-frequency H∞ norm was adopted in this paper, which is a more suitable index to characterize the dissipativity enforcement problems for systems with apriori known operating frequency *** on the Generalized KYP （GKYP） Lemma, dissipativity enforcement problems are derived and expressed in terms of solutions to a set of linear matrix inequalities （LMIs）.Numerical example was included for illustration.

关键词： Dissipativity enforcement finite frequency LMI discrete-time system

Dissipativity Enforcement of Linear Continuous-time Single-Input Single-Output Systems

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Dissipativity Enforcement of Linear Continuous-time Single-I...

第25届中国控制与决策会议

作者： Xin Du Chao Wang xunlin zhu Yan Peng School of Mechatronic Engineering and Automation Shanghai University xunlin zhu is with the Department of Mathematics Zhengzhou University

ISBN: (纸本)9781467355339

This paper introduces a new LMI-based approach to dissipativity enforcement for continuous system. Different from the conventional convex optimization method, the new method based on frequency-selective Kalman-Yakubovich-Popov（FS-KYP） lemma for single-input-single-output（SISO） system. In contrast to existing approaches, the proposed method only uses a minimal number of variables due to the absence of Lyapunov variables. In this way, the dissipativity enforcement problems are derived and expressed in terms of solutions to a set of linear matrix inequalities which can be easily solved.

关键词： Dissipativity enforcement frequency selective Kalmam-Yakubovich-Popov (KYP) lemma single-input-single-output(SISO) system

Finite Frequency Approaches to H∞ Model Reduction for Continuous-time State delayed Systems

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Finite Frequency Approaches to H∞ Model Reduction for Conti...

第24届中国控制与决策会议

作者： Xin Du, Fuwei Liu, xunlin zhu School of Mechatronic Engineering and Automation, Shanghai University Wang Chao the Department of Mathematics, Zhengzhou University

This paper discusses the H∞ model reduction problem for linear continuous-time systems with pure state delay. Different from the conventional entire-frequency H∞ approximation performance specification, finite-frequency H∞ norm was adopted in this paper, which is a more suitable index to characterize the model reduction problems for systems with apriori known operating frequency range. Based on the recently developed TDS GKYP （time delay system Generalized Kalman- Yakubovich-Popov） lemma, sufficient conditions for the finite frequency H∞ model reduction problems are derived and expressed in terms of solutions to a set of linear matrix inequalities （LMIs）. Numerical example was included for illustration.

关键词： model reduction state delay finite frequency LMI continuous-time

被动变采样周期网络控制系统的H_∞控制器设计

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微计算机信息 2007年第24期23卷 128-129,52页

作者：尚展垒朱训林邓依群郑州轻工业学院计算机与通信工程学院解放军信息工程大学信息工程学院

本文研究了具有被动变采样周期网络控制系统的H∞控制器设计问题。提出了基于采样周期切换的方法(采样周期在有限集合内切换),并利用该方法将具有时变采样周期及时延的网络控制系统建模为切换系统。在此基础上,通过求解满足一组线性矩... 详细信息

本文研究了具有被动变采样周期网络控制系统的H∞控制器设计问题。提出了基于采样周期切换的方法(采样周期在有限集合内切换),并利用该方法将具有时变采样周期及时延的网络控制系统建模为切换系统。在此基础上,通过求解满足一组线性矩阵不等式约束的多目标优化问题,研究了网络控制系统的H∞控制器设计方法。仿真结果验证了基于采样周期切换的H∞控制器设计方法的有效性。

关键词：网络控制系统 H∞控制切换被动变采样周期

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连续系统可靠补偿控制器设计

辽宁工程技术大学学报（自然科学版） 2008年第4期27卷 552-555页

作者：朱训林李蔚邓依群金梨郑州轻工业学院计算机与通信工程学院河南郑州450002 解放军信息工程大学信息工程学院河南郑州450002 中国万象集团浙江杭州311200

为了讨论连续系统执行器失效补偿的可靠控制问题。通过定义一个参数依赖的李亚普诺夫(Lyapunov)函数,系统在正常模式和多个不同的故障模式下,存在有各自与之对应的李亚普诺夫(Lyapunov)函数。然后据此函数给出了一个状态反馈控制器设计... 详细信息

为了讨论连续系统执行器失效补偿的可靠控制问题。通过定义一个参数依赖的李亚普诺夫(Lyapunov)函数,系统在正常模式和多个不同的故障模式下,存在有各自与之对应的李亚普诺夫(Lyapunov)函数。然后据此函数给出了一个状态反馈控制器设计方法,以保证可靠系统的稳定性,进而解决系统多模式下的同时镇定问题。此外,在执行器失效的情况下,所设计的控制器能使系统H∞性能达到最优。在对有多个模式的系统而言,多李亚普诺夫(Lyapunov)函数的设计比单个李亚普诺夫(Lyapunov)函数设计有更小的保守性。由此,该方法减少了可靠设计的保守性,仿真结果验证了所给方法的有效性。

关键词：可靠控制系统 H∞控制线性矩阵不等式执行器失效

An improved strategy of piece selection in P2P

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An improved strategy of piece selection in P2P

2009中国控制与决策会议

作者： Jie Zhang~1,Lihui Cheng~1 and xunlin zhu~1 1.School of Computer Science and Communication Engineering,Zhengzhou University of Light Industry,Zhengzhou,Henan,450002, China.

＜正＞On the basis of the analysis of the running pattern in the P2P file sharing system and the research of piece selection strategy in the BitTorrent system,presents a new piece selection strategy that records information of tables by using dynamic piece markers *** strategy can keep the consistency of all pieces selection strategy by using Rarest First strategy in the first piece selection and in the same time can make query location progress not in the diffuse way and improves research location efficiency radically.

关键词： P2P file-sharing piece selection

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网络控制系统量化H_∞控制器设计

黑龙江八一农垦大学学报 2008年第4期20卷 81-85页

作者：朱训林张宏礼郑州轻工业学院计算机科学与通信工程学院郑州450002 黑龙江八一农垦大学文理学院

在量化状态反馈的离散网络控制系统H∞稳定性和稳定化问题的研究中,综合考虑了信号量化和网络条件的影响。为了直接估计量化区域的下界,提出了一个新的通过量化状态反馈的网络控制系统模型,并给出了量化H∞控制器设计方法。数值例子说... 详细信息

在量化状态反馈的离散网络控制系统H∞稳定性和稳定化问题的研究中,综合考虑了信号量化和网络条件的影响。为了直接估计量化区域的下界,提出了一个新的通过量化状态反馈的网络控制系统模型,并给出了量化H∞控制器设计方法。数值例子说明了此方法的优点和有效性。

关键词：网络控制系统(NCS) 量化状态反馈 H∞控制

H∞ Model Reduction of Discrete-time Linear State delayed Systems over Finite-frequency Ranges

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H∞ Model Reduction of Discrete-time Linear State delayed Sy...

第24届中国控制与决策会议

作者： Xin Du, Fuwei Liu, xunlin zhu and Min Zheng School of Mechatronic Engineering and Automation, Shanghai University, Shanghai, 200072,P. R. China the Department of Mathematics, Zhengzhou University, Zhengzhou, Henan 450001, China

The finite-frequency model reduction problem of linear discrete time systems with state delay was investigated in this paper. Finite-frequency H∞ norm was adopted to characterize the approximation performance, and an LMI approach was proposed based on the recent generalized results of GKYP lemma. A numerical example was carried out to illustrate the effectiveness of the proposed method

关键词： Model reduction Finite Frequency LMI