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Global State control for a Class of Inherently Higher-order Parameterized Nonlinear Time-delay systems Based on Homogeneous Domination Approach

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IFAC-PapersOnLine 2015年第12期48卷 191-196页

作者： Chai, Lin Wang, Pan Fei, Shumin Key Laboratory of Measurement and Control of Complex Systems of Engineering Southeast University Ministry of Education School of Automation Nanjing 210096 China

This paper addresses the problem of global state feedback stabilization for a class of inherently higher-order parameterized nonlinear systems subject to time-delay. By using the homogeneous domination approach, we construct a homogeneous state feedback controller with an adaptive strategy. A constructive design method is developed based an effective coupling of the inductive method and a sign function, leading to adaptive regulators with minimal parameterization. With the aid of a homogeneous Lyapunov-Krasovskii functional, the closedloop systems can be asymptotically stabilized globally. © 2015, IFAC (International Federation of Automatic control) Hosting by Elsevier Ltd. All rights reserved.

关键词： Parameterization

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Disturbance Observer Based Robust Finite control Set Predictive Torque control for Induction Motor systems

Disturbance Observer Based Robust Finite Control Set Predict...

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第35届中国控制会议

作者： Junxiao Wang Fengxiang Wang Shihua Li Ralph Kennel School of Automation Southeast University Key Laboratory of Measurement and Control of Complex Systems of Engineering Ministry of Education Institute for Electrical Drive System and Power Electronics Technische Universitaet Muenchen

ISBN: (纸本)9781509009107

A disturbance observer(DOB) based finite control set predictive torque control(PTC) scheme for induction motors subject to lumped disturbances is proposed in this *** control an induction motor using the inverter switching character directly,the finite control set predictive torque control(PTC) method is studied which evaluates the electromagnetic torque and stator flux in the object *** optimized switching vector is choosed to control the insulated gate bipolar transistors(IGBTs),it also can minimize the error between reference signals and predicted *** to direct torque control(DTC),PTC method does not need a modulator and an internal current PI controller,but the speed loop also adopts the PI *** improving the disturbance reject ability and simplifying the PTC control structure,this work introduces a novel PTC method based on DOB technique which does not need the PI speed controller.

关键词： induction motor disturbance observer(DOB) predictive torque control(PTC) direct torque control(DTC) disturbance reject ability

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Stability analysis of networked control systems with denial-of-service attacks

Stability analysis of networked control systems with denial-...

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UKACC International Conference on control (control)

作者： Jin Zhang Chen Peng Suhaib Masroor Hongtao Sun Lin Chai Shanghai University Shanghai Shanghai CN Shanghai Key Laboratory of Power Station Automation Technology Shanghai University Shanghai China Key Laboratory of Measurement and Control of Complex Systems of Engineering Southeast University Nanjing Jiangsu China

This paper addresses stability problem for a class of networked control systems (NCSs) with network attacks. As a network attack to control systems, denial-of-service attacks are fully taken into account in the NCSs modelling. Under the scenario that there exist denial-of-service attacks in the communication channel, a closed-loop system with an error function is provided for the studied NCSs, where the denial-of-service attacks are well considered. Then based on the above constructed system model, one sufficient condition is derived for ensuring the uniformly ultimately boundedness of the derived system under consideration, and the upper bound of the maximum allowable number of denial-of-service attack is obtained. Moreover, the celebrated time-delay system technology method is introduced to improve the result of the upper bound of the maximum allowable number of denial-of-service attack. Finally, one numerical example is given to show the effectiveness of the proposed method.

关键词： Computer crime Networked control systems Actuators Stability analysis Closed loop systems Communication channels

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Adaptive Sliding Mode control for Re-entry Attitude of Near Space Hypersonic Vehicle Based on Backstepping Design

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IEEE/CAA Journal of Automatica Sinica 2015年第1期2卷 94-101页

作者： Jingmei Zhang Changyin Sun Ruimin Zhang Chengshan Qian the Flight Control Research Center Key Laboratory of Measurement and Control of Complex Systems of Engineering Ministry of Education School of Automation Southeast University the College of Information and Control Nanjing University of Information Science & Technology

Combining sliding mode control method with radial basis function neural network (RBFNN), this paper proposes a robust adaptive control scheme based on backstepping design for re-entry attitude tracking control of near space hypersonic vehicle (NSHV) in the presence of parameter variations and external disturbances. In the attitude angle loop, a robust adaptive virtual control law is designed by using the adaptive method to estimate the unknown upper bound of the compound uncertainties. In the angular velocity loop, an adaptive sliding mode control law is designed to suppress the effect of parameter variations and external disturbances. The main benefit of the sliding mode control is robustness to parameter variations and external disturbances. To further improve the control performance, RBFNNs are introduced to approximate the compound uncertainties in the attitude angle loop and angular velocity loop, respectively. Based on Lyapunov stability theory, the tracking errors are shown to be asymptotically stable. Simulation results show that the proposed control system attains a satisfied control performance and is robust against parameter variations and external disturbances. © 2014 Chinese Association of Automation.

关键词： Airships Angular velocity Attitude control Backstepping control theory Design Functions Hypersonic aerodynamics Hypersonic vehicles Navigation Radial basis function networks Sliding mode control Uncertainty analysis Vehicles

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Convergence Analysis of Consensus based Distributed Filtering Algorithm in Sensor Networks 34

Convergence Analysis of Consensus based Distributed Filterin...

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第三十四届中国控制会议

作者： ZHANG Ya TIAN Yu-Ping CAI Jun School of Automation Southeast University Key Laboratory of Measurement and Control of Complex Systems of Engineering Ministry of Education 73658 Army

ISBN: (纸本)9781467374439

This paper studies the distributed filtering problem of sensor networks, where a set of heterogeneous sensing nodes is required to estimate the state of a linear discrete-time dynamic system in a collaborative manner. Due to limited sensing range and communication constraints, just part of sensors can get observations of the process and a consensus based sub-optimal filtering algorithm is designed. The convergence properties of the estimation error covariance is further studied, and a necessary and sufficient convergence condition is provided based on LMIs. This condition shows that the convergence of the algorithm requires the target node in the extended topology of network is globally reachable and each sensing node is observable to the process. Simulation examples are given to illustrate the results.

关键词： Distributed filter,Sensor networks,Consensus,Convergence analysis,LMIs

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Nonlinear Time-varying systems Identification Based on Multi-dimensional Taylor Network and Variable Forgetting Factor Recursive Least Squares Algorithm

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IFAC-PapersOnLine 2015年第11 11期48卷 1103-1107页

作者： Zhang, Jiao-Jun Yan, Hong-Sen School of Automation Southeast University Nanjing210096 China Key Laboratory of Measurement and Control of Complex Systems of Engineering Ministry of Education Nanjing210096 China

A novel method for nonlinear time-varying systems identification based on multi-dimensional Taylor network and variable forgetting factor recursive least squares algorithm is proposed. In this paper, the connection weight coefficients of multi-dimensional Taylor network are regarded as time-varying parameters, which are trained by the variable forgetting factor recursive least squares algorithm, to reflect the input-output change of nonlinear time-varying systems. Simulation results show that the method proposed in this paper is valid. © 2015

关键词： Time varying networks Identification (control systems) Least squares approximations Time varying systems Connection weights Input output Multi dimensional Nonlinear time varying systems Recursive least squares algorithms Time varying parameter Variable forgetting factors

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A new-style decentralized nonlinear robust coordinated control of multiple static synchronous compensators

A new-style decentralized nonlinear robust coordinated contr...

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第35届中国控制会议

作者： Bangjun Lei Xiang Wu Shumin Fei Electrical Engineering College Guizhou Institute of Technology College of Mathmatics and Computer Science Guizhou Normal University Key Laboratory of Measurement and Control of Complex Systems of Engineering Ministry of EducationSchool of Automation Southeast University

ISBN: (纸本)9781509009107

Using the pseudo-generalized Hamiltonian method, this paper investigates the decentralized nonlinear robust coordinated control of multiple static synchronous compensators(STATCOMs) in multi-machine multiload power systems. First,the uncertain nonlinear differential algebraic equation model is constructed for the power system. Then, the dissipative pseudogeneralized Hamiltonian realization of the system is established by means of variable transformation and prefeedback ***, based on the obtained dissipative pseudo-generalized Hamiltonian realization, a new-style decentralized nonlinear robust coordinated controller is put forward. Simulation results demonstrate the effectiveness and robustness of the control scheme.

关键词： Pseudo-generalized Hamiltonian function method Uncertain nonlinear differential algebraic system Multimachine power systems Multiple STATCOMs Decentralized nonlinear robust coordinated control

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A Geometric Extension Design for Second-Order Nonlinear Agents Formation Surrounding a Sphere

A Geometric Extension Design for Second-Order Nonlinear Agen...

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第28届中国控制与决策会议

作者： Yang-Yang Chen Kai-Xuan Wang Ya Zhang Cheng-Lin Liu Qin Wang School of Automation Southeast University Key Laboratory of Measurement and Control of Complex Systems of Engineering Ministry of EducationSoutheast University Chien-Shiung Wu College Southeast University Key Laboratory of Advanced Process Control for Light Industry(Ministry of Education) Institute of AutomationJiangnan University College of information engineering Yangzhou University

ISBN: (纸本)9781467397155

This article deals with the problem of driving a family of second-order nonlinear agents to land on a sphere and formation tracking a set of given orbits on the sphere.A novel geometric extension called the concentric compression method is proposed to give a solution to spheral landing and then combines with the control of spherical meridian and parallel to achieve formation motion along given orbits on the *** asymptotic stability of system is proved by Lyapunov-based method when the communication topology is *** effectiveness of the analytical result is verified by a numerical simulation.

关键词： Formation tracking Sphere landing Geometric Extension Second-Order Nonlinear Agents

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A double loop optimization method for gasoline online blending

A double loop optimization method for gasoline online blendi...

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IEEE International Conference on Industrial Technology (ICIT)

作者： Weiheng Chen Jun Yang School of Information Science and Engineering Southeast University Nanjing P. R. China Key Laboratory of Measurement and Control of Complex Systems of Engineering Ministry of Education Southeast University Nanjing P. R. China

ISBN: (纸本)9781467380768

Direct-blending component oils bring great disturbance to the online gasoline blending control. A double loop optimization strategy with nested outer and inner loops is proposed, and the optimization strategy combined with a case study is illustrated in detail in this paper. The real industry application demonstrates that this new optimization strategy can not only take account of the bottom oil's properties deviation, but also timely detect the fluctuation of gasoline properties from the direct-blending oils. In this way, the final gasoline product properties can be controlled quite well at one time, and the re-blending times of final product have been much reduced compared with the conventional single loop optimization method.

关键词： Petroleum Oils Optimization methods Fluctuations Standards Production

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Extended State Observer Based control for Ground-Coupled Heat Pump System

Extended State Observer Based Control for Ground-Coupled Hea...

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第27届中国控制与决策会议

作者： Zhang Yu Wang Junxiao LI Shihua School of Automation Southeast University Key Laboratory of Measurement and Control of Complex Systems of Engineering Ministry of Education

ISBN: (纸本)9781479970186

This paper aims to investigate an extended state observer（ESO） based control approach for the ground-coupled heat pump system（GCHP）.As GCHP system has strong disturbances,a feasible approach of disturbance rejection should be proposed *** is employed to estimate the disturbance and compensate it to the controller to eliminate effects of the *** using ESO-based control and comparing with traditional control method,a better control performance is obtained through simulation verification.

关键词： GCHP ESO disturbance rejection simulation

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