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Design of a Networked Tracking Control System With a Data-based Approach

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IEEE/CAA Journal of Automatica Sinica 2019年第5期6卷 1261-1267页

作者： shiwen tong Dianwei Qian Xiaoyu Yan Jianjun Fang Wei Liu the College of Robotics Beijing Union UniversityBeijing 100101and also with Beijing Key Laboratory of Information Service EngineeringBeijing Union UniversityBeijing 100101China the School of Computer and Control Engineering North China Electric Power UniversityBeijing 102206China the Graduate School Beijing Union UniversityBeijing 100101China the College of Urban Rail Transit and Logistics Beijing Union UniversityBeijing 100101China

Tracking control is a very challenging problem in the networked control system(NCS), especially for the process with blurred mechanism and where only input-output data are available. This paper has proposed a data-based design approach for the networked tracking control system(NTCS). The method utilizes the input-output data of the controlled process to establish a predictive model with the help of fuzzy cluster modelling(FCM)technology. Then, the deduced error and error change in the future are treated as inputs of a fuzzy sliding mode controller(FSMC) to obtain a string of future control actions. These candidate control actions in the controller side are delivered to the plant side. Thus, the network induced time delays are compensated by selecting appropriate control action. Simulation outputs prove the validity of the proposed method.

关键词： Delay compensation fuzzy cluster modeling (FCM) fuzzy sliding mode control (FSMC) networked tracking control(NTC)

Fuzzy-Inverse-Model-Based Networked Tracking Control Frameworks of Time-Varying Signals

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IEEE/CAA Journal of Automatica Sinica 2024年第7期11卷 1708-1710页

作者： shiwen tong Dianwei Qian Keya Yuan Dexin Liu Yuan Li Jiancheng Zhang the College of Robotics Beijing Union UniversityBeijing 100101China the School of Control and Computer Engineering North China Electric Power UniversityBeijing 102206China

Dear Editor,Tracking control in networked environment is a very challenging problem due to the contradiction of rapid response to the time-varying signal and the inevitable delay introduced by networks. This letter has proposed several fuzzy-inverse-model-based network tracking control frameworks which are helpful in handling the system with nonlinear dynamics and uncertainties.

关键词： contradiction letter inverse

Design of Networked Control Systems with Random Time Delays and Packet Dropout by Using Fuzzy Theories 36

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Design of Networked Control Systems with Random Time Delays ...

第36届中国控制会议

作者： shiwen tong Dianwei Qian Xiaoyu Yan Wei Liu Jianjun Fang Mingyang Chu College of Robotics Beijing Union University School of Computer and Control Engineering North China Electric Power University Graduate School Beijing Union University College of Urban Rail Transit and Logistics Beijing Union University

ISBN: (纸本)9781538629185

This paper has proposed a design for networked control systems with random time delays and packet dropout in the forward communication channel by using fuzzy ***,a simple predictive model was built by means of fuzzy cluster modeling technology and neural network ***,a prediction oriented fuzzy sliding mode controller was presented to obtain the ’future control actions’ based on the ’future error’ and ’future error change’.Thus,the random time delays in the forward channel could be actively compensated by selecting appropriate control actions from the received control sequences in the plant *** dropout problem was transformed into the time delay issue under the assumption of maximum *** demonstrate the validity of the proposed method.

关键词： Networked control fuzzy cluster modeling fuzzy sliding mode control time delay packet dropout

Realization of a Data-based Adaptive Networked Tracking Control in NetCon System

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Realization of a Data-based Adaptive Networked Tracking Cont...

第40届中国控制会议

作者： Ye Zhao shiwen tong College of Urban Rail Transit and Logistics Beijing Union University College of Robotics Beijing Union University State Key Laboratory for Management and Control of Complex Systems Institute of AutomationChinese Academy of Sciences

It is very difficult to realize the networked tracking control of a controlled process with unclear mechanism. An adaptive networked tracking control method that we proposed can solve such a problem. The method is a data-based control scheme started from the input-output data of the controlled process. We have realized it in the NetCon system. Firstly, the T-S fuzzy model of the controlled object is established according to input-output data by using fuzzy cluster modeling *** the fuzzy prediction model is obtained by transforming it into the fuzzy singleton model through equivalent transformation.A series of control actions are derived by inverting the fuzzy singleton model according to the reversibility condition. These predicted values can compensate the data dropout and time delay in the network communication channels. The influence of external disturbance and uncertainty on system performance is eliminated by using internal model structure and adaptive control method. Finally, experiment results in NetCon system show the effectiveness of the proposed method.

关键词： Fuzzy singleton model inverse model adaptive strategy NetCon system

Robust Guaranteed Cost Formation Control for Multi-agent Systems with Uncertain Topologies

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Robust Guaranteed Cost Formation Control for Multi-agent Sys...

第三十九届中国控制会议

作者： Yaxiao Zhang shiwen tong Yangzhou Chen Ning Huang Beijing Key Laboratory of Information Service Engineering Beijing Union University College of Robotics Beijing Union University College of Artificial Intelligence and Automation Beijing University of Technology

This paper investigates a robust guaranteed cost formation problem for a class of continuous-time linear high-order multi-agent systems with uncertain communication topology which is modeled by directed graph. Firstly, the robust guaranteed cost formation problem is transformed into a robust guaranteed cost control problem of an auxiliary uncertain system by a linear transformation. Secondly, a sufficient condition for the robust guaranteed cost formation control problem is presented in terms of linear matrix inequality techniques, and an upper bound of the guaranteed cost function is given. Finally, a numerical example is shown to demonstrate the effectiveness of the theoretical results.

关键词： Robust Guaranteed Cost Multi-agent Systems Formation Uncertain Topologies

Design of Networked Control Systems Using the Fuzzy Inverse Model

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Design of Networked Control Systems Using the Fuzzy Inverse ...

第37届中国控制会议

作者： tong shiwen QIAN Dianwei YAN Xiaoyu CHENG Guang FANG Jianjun College of Robotics Beijing Union University School of Computer and Control Engineering North China Electric Power University Graduate School Beijing Union University College of Urban Rail Transit and Logistics Beijing Union University

This paper has proposed a novel design for networked control systems by using fuzzy inverse ***,a fuzzy clustering model has been designed according to the fully excited input-output data of the controlled ***,an equivalent fuzzy singleton model is built on the basis of the fuzzy clustering *** the fuzzy singleton model satisfying the invertibility condition,the inverse mapping for the control action can be easily *** then the sequence of the future control actions are deduced by *** control actions are packed and sent from controller side to the plant ***,time delays in the forward channel could be actively compensated by selecting appropriate control actions from the received control sequences in the plant ***,the difference between the fuzzy singleton model and the actual process can bring some steady ***,the errors can be overcome by the internal model control *** demonstrate the validity of the proposed method.

关键词： Networked control fuzzy cluster modeling fuzzy singleton model inversion method time delay

高盐饮食抑制小鼠NK细胞成熟和杀伤功能的研究

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陆军军医大学学报 2022年第9期44卷 882-890页

作者：陶洪云童师雯殷文伟重庆医科大学附属第二医院感染科病毒性肝炎研究所重庆400010

目的探究高盐饮食对小鼠自然杀伤(natural killer,NK)细胞成熟和功能的影响。方法3~4周龄雄性C57BL/6J小鼠(体质量约9 g)分为正常盐饮食(normal-salt diet,NSD)组(给予普通饲料及高压灭菌水喂养)和高盐饮食(high-salt diet,HSD)组(给予... 详细信息

目的探究高盐饮食对小鼠自然杀伤(natural killer,NK)细胞成熟和功能的影响。方法3~4周龄雄性C57BL/6J小鼠(体质量约9 g)分为正常盐饮食(normal-salt diet,NSD)组(给予普通饲料及高压灭菌水喂养)和高盐饮食(high-salt diet,HSD)组(给予含4%NaCl高盐饲料及含1%NaCl高压灭菌水喂养)。采用CD27和CD11b的表达界定NK细胞成熟亚群,CD69标记细胞的早期活化,流式细胞术分析两组小鼠NK细胞亚群分布和活化水平;采用polyI:C体内处理18 h和体外佛波酯/离子霉素刺激4 h,流式细胞术检测两组小鼠NK细胞IFN-γ产生水平;通过YAC-1体内杀伤实验,流式细胞术评估两组小鼠NK细胞的细胞毒作用。结果高盐饮食不影响肝脏﹑脾脏﹑骨髓和外周血NK细胞比例,但抑制肝脏、脾脏NK细胞CD69表达(P<0.01)。高盐饮食组小鼠较正常盐饮食组小鼠肝、脾、骨髓中未成熟的NK细胞(CD27^(+)CD11b^(-))比例增加(P<0.05),而成熟的M1 NK细胞亚群(CD27^(+)CD11b^(+))比例降低(P<0.05),DX5^(+)NK1.1^(+)成熟NK细胞比例也降低(P<0.05),表明高盐饮食抑制NK细胞成熟。高盐饮食组小鼠NK细胞IFN-γ的表达低于正常盐饮食组小鼠(P<0.01),提示高盐饮食抑制NK细胞功能。体内杀伤实验表明,高盐饮食组小鼠腹腔剩余YAC-1细胞百分比和绝对数升高(P<0.01),提示高盐饮食抑制NK细胞的细胞毒作用。结论高盐饮食抑制NK细胞成熟,抑制NK细胞的活化和功能。

关键词：高盐饮食 NK细胞 CD27 CD11b IFN-γ YAC-1细胞

pH值系统变论域模糊控制器的设计及性能分析

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智能系统学报 2011年第4期6卷 367-372页

作者：佟世文中国天辰工程有限公司北京100029

针对pH值非线性控制系统,设计了一种实时简化变论域模糊控制器.将变论域思想与实时模糊推理策略相结合:一方面论域随着误差的减小而收缩,而论域的收缩相当于控制规则的增加,从而增加了控制精度;另一方面采用实时模糊推理方法,即对于一... 详细信息

针对pH值非线性控制系统,设计了一种实时简化变论域模糊控制器.将变论域思想与实时模糊推理策略相结合:一方面论域随着误差的减小而收缩,而论域的收缩相当于控制规则的增加,从而增加了控制精度;另一方面采用实时模糊推理方法,即对于一个二入一出的模糊控制器,一次推理过程中最多只激活4条控制规则,在控制的过程中只考虑这4条控制规则.这2种思想的结合使得控制规则的设计大大简化,可以采用批处理的方式设计控制器,不仅加快了系统的动态响应,也提高了控制精度.仿真结果证实了这种控制方法的有效性.

关键词： pH系统变论域实时模糊推理模糊控制器

Targeting Epac2 and GluA3-containing AMPARs:a novel therapeutic strategy for Alzheimer's disease

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Neural Regeneration Research 2025年第11期20卷 3223-3224页

作者： tong Zhang Martina Schmidt Department of Molecular Pharmacology Groningen Research Institute of PharmacyUniversity of GroningenGroningenThe Netherlands School of Pharmacy Tianjin Medical UniversityTianjinChina

Alzheimer's disease(AD)is a neurodegenerative disease that manifests progressive decline in memory and *** the early stage of AD,memory retrieval is impaired preceding memory acquisition and consolidation(Roy et al.,2016).Prior to the onset of symptoms,pathological amyloid-β(Aβ)plagues and tau protein tangles accumulate in extracellular and intracellular spaces,respectively,leading to *** these hallmark pathologies,Aβ is proposed to be the primary etiology by triggering a cascade of pathogenic events,including neuroinflammation,oxidative stress,tau hyperphosphorylation,synaptic/neuronal dysfunction,and neuronal death(Zhang et al.,2023b).

关键词： Alzheimer impaired Aβ