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第三十四届中国控制会议

作者： WANG Naizhou PEI Hailong TANG Yong Key Laboratory of Surface Functional Structure Manufacturing of Guangdong Higher Education Institutes School of Mechanical and Automotive Engineering South China University of Technology Key Laboratory of Autonomous Systems and Networked Control Ministry of Education South China University of Technology

ISBN: (纸本)9789881563897

This paper focuses on the anti-windup-based dynamic controller synthesis problem for a certain class of nonlinear systems subject to actuator saturation. Based on the Linear-Fractional Representation(LFR) techniques, the original system is transformed into a linear system incorporating a sector-bounded nonlinearity and a saturation nonlinearity with an additional linear-fractional constraint. By using a quadratic Lyapunov function and with a modified sector condition describing the saturation nonlinearity, LMI-based conditions for the synthesis of an anti-windup-based dynamic controller are presented aiming at enlarging the estimated region of attraction(ROA) of the closed-loop systems. A numerical example illustrates the effectiveness of the proposed approaches.

关键词： Anti-windup,nonlinear system,region of attraction,linear matrix inequality(LMI)

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What Is 1/0 in the General Sense of Physics, Applied Computation, and/or Electronics? 34

What Is 1/0 in the General Sense of Physics, Applied Computa...

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第三十四届中国控制会议

作者： ZHANG Yunong QIU Binbin LING Yingbiao YANG Zhi PENG Chen School of Information Science and Technology Sun Yat-sen University(SYSU) SYSU-CMU Shunde International Joint Research Institute Key Laboratory of Autonomous Systems and Networked Control Ministry of Education

ISBN: (纸本)9781467374439

For twelve centuries, the division-by-zero singularity has been deemed as a notorious problem. Here, using the ideas from dynamics theory, and viewing everything as the result of change in the form of dynamical system(i.e., a temporal evolution perspective), we show that division by zero can be well understood by studying from a neat gradient-based dynamical *** addition to providing a new perspective towards the division operation, we introduce a framework in which a concept of generalized division is described, enclosing the singularity-conquering division as a special case, and bringing new possibilities to various fields in industry, such as control applications.

关键词： Singularity,Dynamical system,Division-by-Zero Problem,Generalized Division,control Applications

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Synchronization of two chaotic systems with three or two inputs via ZG method 34

Synchronization of two chaotic systems with three or two inp...

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34th Chinese control Conference, CCC 2015

作者： Yunong, Zhang Ming, Liu Long, Jin Yinyan, Zhang Hongzhou, Tan Guangzhou China SYSU-CMU Shunde International Joint Research Institute Foshan China Key Laboratory of Autonomous Systems and Networked Control Ministry of Education Guangzhou China

ISBN: (纸本)9789881563897

Recently, the synchronization of two chaotic systems is attracting more and more attentions because of its potential applications in communication security, aerospace industry and many other fields. In this paper, by combining Zhang dynamics (ZD) and gradient dynamics (GD), a novel effective controller-design method termed Zhang-gradient (ZG) method is firstly developed for the chaos synchronization problem with multiple inputs (i.e., three or two inputs). Via this ZG method, the traditional three-input chaos synchronization problem can be successfully solved with desirable convergence rate and satisfactory accuracy. In addition, by taking advantage of the coupling property of the chaotic system, a creative extension of the ZG method is investigated to solve the thorny two-input chaos synchronization problem. Simulation verifications further demonstrate that the controllers based on the ZG method can not only achieve satisfactory synchronization accuracy and exponential convergence rate on the three-input chaos synchronization problem but also successfully solve the chaos synchronization problem with only two inputs. © 2015 Technical Committee on control Theory, Chinese Association of Automation.

关键词： Chaos Synchronization Chen Chaotic system Lü Chaotic system ZG (Zhang-Gradient) Method

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Active disturbance rejection-based sliding mode control for a surface vessel 34

Active disturbance rejection-based sliding mode control for ...

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34th Chinese control Conference, CCC 2015

作者： Wei, Yuli Sun, Tairen Liu, Guohai School of Electrical Information and Engineering Jiangsu University Zhenjiang China Key Laboratory of Autonomous Systems and Networked Control Ministry of Education South China University of Technology Guangzhou China

ISBN: (纸本)9789881563897

Active disturbance rejection-based sliding mode control is proposed for the surface vessel with exogeneous disturbances to track desired trajectory robustly. A sliding surface based extended state observer is presented to estimate the lumped disturbances and compensate them in a feedforward form. To enhance the disturbances estimation speed and accuracy, a composite adaptive extended state observer, which is adjusted by tracking error and sliding surface estimation error, is proposed to estimate disturbances. The composite adaptive estimation based tracking control is constructed in feedforward-feedback composite control strategy. The effectiveness of the designed controllers is illustrated by theoretical analysis and simulations results. © 2015 Technical Committee on control Theory, Chinese Association of Automation.

关键词： Active disturbance rejection control Extended state observer Sliding mode control Surface vessel Trajectory tracking

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Study on the Rudder control Law of Bank-to-turn Cruise Missile

Study on the Rudder Control Law of Bank-to-turn Cruise Missi...

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The Society of Instrument and control Engineers Annual Conference 2015

作者： XU Zhaoqing Pei Hailong College of Automation Science and Engineering Ministerial Key Laboratory of Autonomous System and Networked Control South China University of Technology

The rudder control law of certain bank-to-turn cruise missile is studied in this paper. The yaw and roll aerodynamic force caused by grid rudder is analyzed, the aerodynamic force and aerodynamic moment with motion equations are linearized based on the small perturbation linear theory. The beginning state of the cruise is chose as the feature point, the values of dynamical coefficient are calculated, then the lateral perturbation equations are *** transfer functions of each attitude angle under the rudder deflection are obtained through solving the perturbation equations, and then the dynamic step responses of the grid rudder’s are obtained. The lateral rudder control law which can satisfy zero sideslip condition is derived through the dynamic responses, according this control law the missile can achieve bank-to-turn.

关键词： cruise missile bank-to-turn rudder control law

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Sigmoid function aided Zhang dynamics control for output tracking of time-varying linear system with bounded input

Sigmoid function aided Zhang dynamics control for output tra...

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Chinese control Conference (CCC)

作者： Yunong Zhang Deyang Zhang Bibbin Qiu Jinjin Wang Jian Li School of Information Science and Technology Sun Yat-sen University (SYSU) Guangzhou P. R. China Ministry of Education Key Laboratory of Autonomous Systems and Networked Control Guangzhou P. R. China SYSU-CMU Shunde International Joint Research Institute Foshan P. R. China

This paper investigates the output-tracking control of time-varying linear (TVL) system. Note that the input is always limited in a range due to actuator physical constraints or energy-saving purposes. By combining the Zhang dynamics (ZD) and the sigmoid function, an effective controller, termed sigmoid function aided ZD (SFAZD) controller, is designed for tracking the TVL system. Simulative verifications substantiate that the proposed SFAZD controller can achieve accurate tracking results, and limit the input in the range during the tracking process.

关键词： Time-varying systems Trajectory Actuators Limiting Neural networks Linear systems

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Baseline Characteristics and Treatment Patterns of the Patients Recruited to the China Registry of Hepatitis B

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Journal of Clinical and Translational Hepatology 2019年第4期7卷 322-328页

作者： Shan Shan Hong You Junqi Niu Jia Shang Wen Xie Yuexin Zhang Xun Li Hong Ren Hong Tang Huiguo Ding Xihong Wang Yuemin Nan Xiaoguang Dou Tao Han Lingyi Zhang Xiaoqing Liu Cunliang Deng Jilin Cheng Xiaozhong Wang Qing Xie Shumei Lin Yan Huang Youqing Xu Yong Xiong Wu Li Xuebing Yan Hongxin Piao Wenxiang Huang Qinghua Lu Weijin Gong Shiping Li Xiaoxuan Hu Xiaolan Zhang Shourong Liu Yufang Li Dongliang Yang Hai Li Caixia Yang Mingliang Cheng Liaoyun Zhang Huanwei Zheng Xinhua Luo Feng Lin Lei Wang Guanghua Xu Xiaoyuan Xu Lai Wei Jinlin Hou Zhongping Duan Hui Zhuang Xizhong Yang Yuanyuan Kong Jidong Jia the CR-HepB study group,Beijing,China Liver Research Center Beijing Friendship HospitalCapital Medical UniversityBeijing Key Laboratory of Translational Medicine on Liver CirrhosisNational Clinical Research Center for Digestive DiseasesBeijingChina Department of Hepatology First Hospital of Jilin UniversityChangchunJilinChina Department of Infectious Diseases Henan Provincial People's HospitalZhengzhouHenanChina Center of Liver Diseases Beijing Ditan HospitalCapital Medical UniversityBeijingChina Department of Infectious Diseases First Affiliated Hospital of Xinjiang Medical UniversityUrumqiXinjiangChina Department of General Surgery The First Hospital of Lanzhou UniversityLanzhouGansuChina Department of Infectious Diseases The Second Affiliated Hospital of Chongqing Medical UniversityChongqingChina Center of Infectious Diseases West China Hospital of Sichuan UniversityChengduSichuanChina Department of Gastroenterology and Hepatology Beijing Youan HospitalCapital Medical UniversityBeijingChina Center of Infectious Diseases The Third People's Hospital of TaiyuanTaiyuanShanxiChina Department of Traditional and Western Medical Hepatology The Third Hospital of Hebei Medical UniversityShijiazhuangHebeiChina Department of Infectious Diseases Shengjing Hospital of China Medical UniversityShenyangLiaoningChina Department of Hepatology Tianjin Third Central HospitalTianjin Medical UniversityTianjinChina Department of Hepatology Lanzhou University Second HospitalLanzhouGansuChina Department of Infectious Diseases Peking Union Medical College HospitalBeijingChina Department of Infectious Diseases The Affiliated Hospital of Southwest Medical UniversityLuzhouGansuChina Department of Gastroenterology Shanghai Public Health Clinical CenterShanghaiChina Department of Hepatology Xinjiang Uygur Autonomous Region Traditional Chinese Medicine HospitalUrumqiXinjiangChina Department of Infectious Diseases Shanghai Ruijin HospitalJiao Tong University School of MedicineShanghaiChina Department of Infectious Diseases Th

Background and Aims: Chronic hepatitis B virus(HBV)in-fection remains a major public health problem ***,we describe the baseline characteristics and treatment pro-files of HBV-infected patients recruited to the China Registry of Hepatitis ***: Inclusion criteria were patients with different stages of chronic HBV infection and complete key *** criteria were patients with hepatocellular *** baseline clinical,laboratory and treatment pro-files were ***: Finally,40,431 patients were *** median age was 43 years,with 65.2%being men and 51.3%being positive for hepatitis B e antigen(HBeAg).The most common initial diagnosis was chronic hep-atitis B(81.0%),followed by cirrhosis(9.3%),inactive carrier of hepatitis B surface antigen(HBsAg)(6.7%),and immune tolerant phase of hepatitis B infection(3.0%).Among the 21,228 patients who were on treatment,88.0%,10.0%and 2.0%received nucleos(t)ide analogues(NAs),interferon or combination of NAs and interferon,*** propor-tion of patients who received preferred NAs(entecavir or te-nofovir disoproxil fumarate)had increased from 13.5%in 2003 to 79.7%in ***: We concluded that middle-aged men accounted for most of the patients with chronic hepatitis B in this cross-sectional *** half of the patients were *** were the most com-monly used therapy,and use of the preferred NAs had steadily increased in the past decade.

关键词： Hepatitis B Treatment Registry

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Synchronization of Two Chaotic systems with Three or Two Inputs via ZG Method

Synchronization of Two Chaotic Systems with Three or Two Inp...

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第三十四届中国控制会议

作者： ZHANG Yunong LIU Ming JIN Long ZHANG Yinyan TAN Hongzhou School of Information Science and Technology Sun Yat-sen University(SYSU) SYSU-CMU Shunde International Joint Research Institute Key Laboratory of Autonomous Systems and Networked Control Ministry of Education

ISBN: (纸本)9789881563897

Recently, the synchronization of two chaotic systems is attracting more and more attentions because of its potential applications in communication security, aerospace industry and many other fields. In this paper, by combining Zhang dynamics(ZD) and gradient dynamics(GD), a novel effective controller-design method termed Zhang-gradient(ZG) method is firstly developed for the chaos synchronization problem with multiple inputs(i.e., three or two inputs). Via this ZG method, the traditional three-input chaos synchronization problem can be successfully solved with desirable convergence rate and satisfactory accuracy. In addition, by taking advantage of the coupling property of the chaotic system, a creative extension of the ZG method is investigated to solve the thorny two-input chaos synchronization problem. Simulation verifications further demonstrate that the controllers based on the ZG method can not only achieve satisfactory synchronization accuracy and exponential convergence rate on the three-input chaos synchronization problem but also successfully solve the chaos synchronization problem with only two inputs.

关键词： Chaos Synchronization,L ü Chaotic system,Chen Chaotic system,ZG(Zhang-Gradient) Method

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Spot hover control of helicopter and swing control of helicopter sling load by using Zhang-gradient method 34

Spot hover control of helicopter and swing control of helico...

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34th Chinese control Conference, CCC 2015

作者： Bolin, Liao Ying, Fang Yinyan, Zhang Hongzhou, Tan Yunong, Zhang Guangzhou China SYSU-CMU Shunde International Joint Research Institute Foshan China College of Information Science and Engineering Jishou University Jishou China Key Laboratory of Autonomous Systems and Networked Control Ministry of Education Guangzhou China

ISBN: (纸本)9789881563897

Helicopter sling load has a wide range of applications. However, the sling load of helicopter may make it dangerous. In this paper, the spot hover control and the swing control of helicopter sling load system are investigated. To solve the problems, the ZG method, which is the combination of Zhang dynamics (ZD) and gradient dynamics (GD) methods, is adopted. Firstly, with the purpose of helicopter spot hover considered, a z2g1 controller is designed and proposed by using the ZG method, where ZD is used for two times and GD is used for one time. Secondly, with the purpose of swing control of helicopter sling load considered, another z2g1 controller is designed and proposed. Simulation results on a mathematical model of helicopter sling load system equipped with the proposed z2g1 controllers are presented for different control purposes, which substantiate the effectiveness and significance of the proposed method and controllers. © 2015 Technical Committee on control Theory, Chinese Association of Automation.

关键词： Helicopter Sling Load Spot Hover Swing control ZG (Zhang-Gradient) Method

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Proposal, verification and comparison on infinitely many ZTFs leading to various nets for Zhang matrix inverse solving

Proposal, verification and comparison on infinitely many ZTF...

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International Conference on Intelligent control and Information Processing (ICICIP)

作者： Binbin Qiu Yunong Zhang Zhi Yang School of Information Science and Technology Key Laboratory of Autonomous Systems and Networked Control Ministry of Education Guangzhou China

Lately, Zhang et al have proposed the notion of infinitely many Z-type functions (ZTFs) leading to various Z-type neural nets (ZTNNs), and established a systematic approach (i.e., the general-form ZTNN, GFZTNN) for the real-time solution of a time-varying matrix inverse (also termed, Zhang matrix inverse, ZMI). Being a supplementary and in-depth research, this paper provides the theoretical result on the convergence performance of the GFZTNN model. Besides, such a GFZTNN model is generalized and exploited for computing the time-varying Drazin inverse (TVDI) instead of the usual constant one. Finally, computer simulations with two illustrative examples are performed to show the efficacy and advantage of two specific ZTNN models originating from the GFZTNN model for the realtime solution of ZMI and/or TVDI.

关键词： Computational modeling Real-time systems Convergence Analytical models Numerical models Eigenvalues and eigenfunctions Neural networks

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