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第三十届中国控制会议

作者： sun zongyao~1,liu yungang~2 1.institute of automation,qufu normal university,qufu 273165,p.r.china 2.school of control science and engineering,shandong university,jinan 250061,p.r.china

＜正＞The stabilization problem is investigated for a class of time-delay high-order nonlinear *** the flexible way of adding a power integrator,the recursive design procedure of a continuous state-feedback controller is derived,and globally asymptotic stability of the resulting closed-loop system is proven with the aid of the delicate construction of an appropriate Lyapunov-Krasovskii ***,a simulation example is given to illustrate the correctness of the theoretical result.

关键词： Time-Delay High-Order Nonlinear Systems Adding a power Integrator Lyapunov-Krasovskii Functional State-Feedback

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L_2 DISTUrBANCE ATTENUATION FOr A CLASS OF TIME-DELAY HAMILTONIAN SYSTEMS

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Journal of Systems science & Complexity 2011年第4期24卷 672-682页

作者： Weiwei sun Yuzhen WANG renming YANG institute of automation Qufu Normal University Qufu 273165 China. school of control science and engineering Shandong University Jinan 250061 China.

This paper considers the problem of L2-disturbance attenuation for a class of time-delay port-controlled Hamiltonian systems. A v-dissipative inequality is established by using a proper control law and a storage function. Then based on the razumikhin stability theorem, a sufficient condition is proposed for the asymptotically stability of the closed-loop system. Finally, the authors investigate the case that there are time-invariant uncertainties belonging to some convex bounded polytypic domain and an L2 disturbance attenuation control law is proposed. Study of illustrative example with simulation shows that the presented method in this paper works very well in the disturbance attenuation of time-delay Hamiltonian systems.

关键词： Hamiltonian systems L2 disturbance attenuation stability time-delay.

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维普期刊数据库

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Consensus of multiagent systems based on disturbance observer

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控制理论与应用（英文版） 2010年第2期8卷 145-150页

作者： Hongyong YANG 1 , Fucai WANG 2 , Zhenxing ZHANG 3 , Guangdeng ZONG 4 (1.school of Information science and engineering, Ludong university, Yantai shandong 264025, china 2.school of Electronic and Electrical engineering, Ludong university, Yantai shandong 264025, china 3.school of automation, Southeast university, Nanjing Jiangsu 210096, china 4.institute of automation, qufu normal university, qufu shandong 273165, china) school of Information science and engineering Ludong University Yantai Shandong China school of Electronic and Electrical engineering Ludong University Yantai Shandong China school of automation Southeast University Nanjing Jiangsu China institute of automation Qufu Normal University Qufu Shandong China

The objectives of this work are the development and design of disturbance observers (DO’s) for a team of agents that accomplish consensus on agents’ states in the presence of exogenous disturbances. A pinning control strategy is designed for a part of agents of the multiagent systems without disturbances, and this pinning control can bring multiple agents’ states to reaching an expected consensus value. Under the effect of the disturbances, nonlinear disturbance observers are developed for disturbances generated by an exogenous system to estimate the disturbances. Asymptotical consensus of the multiagent systems with disturbances under the composite controller can be achieved. Finally, by applying an example of multiagent systems with switching topologies and exogenous disturbances, the design of the parameters of DO’s are illuminated.

关键词： Multiagent systems Disturbance observer pinning control Consensus

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维普期刊数据库

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An Adaptive controller for a Class of High-Order Nonlinear Systems with Unknown control Coefficients

An Adaptive Controller for a Class of High-Order Nonlinear S...

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第三十届中国控制会议

作者： sun zongyao~1,liu yungang~2,liu Zhenguo~1 1.institute of automation,qufu normal university,qufu,273165,p.r.china 2.school of control science and engineering,shandong university,jinan,250061,p.r.china

＜正＞In this paper,a valid approach is successfully addressed to design the adaptive stabilizing control law for a class of high-order nonlinear systems with unknown control coefficients and in triangular *** such control systems,the state- feedback stabilizing control has been investigated recently under the assumption that the lower bounds of the control coefficients are precisely *** paper removes such assumption,and gives the recursive design procedure of stabilizing control law by employing the approach of adding a power integrator together with adaptive technique to the appropriately defined unknown system *** designed state-feedback adaptive control law,which vanishes at the origin,guarantees that the states of the closed-loop system are globally asymptotically stable,while all the other signals are uniformly bounded.

关键词： High-Order nonlinear systems Adaptive stabilizing control Adding a power integrator Tuning functions

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Output feedback stabilization of nonholonomic systems with nonlinear unmeasured dynamics

Output feedback stabilization of nonholonomic systems with n...

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第三十一届中国控制会议

作者： ZHAO Yan~1 WU Yuqiang~2 1.school of automation Southeast university Nanjing 210096 p.r.china 2.institute of automation qufu normal university qufu 273165 p.r.china

＜正＞This paper studies the problem of output feedback stabilization for a class of more general nonholonomic systems whose nonlinear drifts are polynomially bounded by linear terms and high order terms of unmeasured *** output feedback controller is obtained applying the backstepping approach and the dual observer *** homogenous theory is also utilized in the recursive *** with a switching control scheme,the designed controller guarantees that the closed-loop system is output feedback globally asymptotically stabilized and the states converge to zero asymptotically.A simulation example is provided to illustrate the validness of the proposed approach.

关键词： Output feedback Switching control High order Unmeasured states

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control Effort reduction in Output-Feedback Stabilization for A Class of Stochastic Nonlinear Systems

Control Effort Reduction in Output-Feedback Stabilization fo...

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第二十七届中国控制会议

作者： Duan Na1,Xie Xuejun1,2 1.school of Electrical engineering&automation,Xuzhou normal university,Xuzhou 221116,p.r.china 2.institute of automation,qufu normal university,qufu shandong 273165,p.r.china

This paper considers a class of stochastic nonlinear systems with linearly bounded unmeasurable states from the viewpoint of reducing the control *** main work consists of the following aspects:（1） By choosing an output-feedback controller with an improved algorithm of choosing critical value for gain parameter,we show that the critical value for gain parameter of observer is smaller than that obtained by the existing work without imposing any additional ***,less control effort and rate of change of the controller are required.（2） The designed output-feedback controller maintains that the closed-loop system is bounded in probability,the equilibrium at the origin is globally asymptotically stable（GAS） in probability.（3） The problem of inverse optimal stabilization in probability is also *** example demonstrates the effectiveness of the control scheme.

关键词： Stochastic nonlinear systems Output-Feedback stabilization control effort Critical value

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Adaptive H∞ control of Time-Delay Hamiltonian Systems with parametric Uncertainties and Disturbances

Adaptive H∞ Control of Time-Delay Hamiltonian Systems with ...

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第三十一届中国控制会议

作者： Weiwei sun,pan Wang,Guochen pang institute of automation,qufu normal university,qufu,shandong 273165,p.r.china

This paper addresses the adaptive H

关键词： Hamiltonian systems Time-Delay H∞ control Uncertainties

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Decentralized Output-Feedback for Stochastic Interconnected Systems with Unmodeled Dynamic Interactions

Decentralized Output-Feedback for Stochastic Interconnected ...

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第三十届中国控制会议

作者： YU Xin~1,XIE Xue-Jun~(2,3),WU Yu-Qiang~3 1.school of automation,Southeast university,Nanjing 210096,Jiangsu province,p.r.china 2.school of Electrical engineering and automation,Xuzhou normal university,Xuzhou 221116,p.r.china 3.institute of automation,qufu normal university,qufu 273165,shandong province,p.r.china

＜正＞In this paper,we consider the problem of decentralized adaptive output-feedback for stochastic nonlinear interconnected systems with unknown virtual control coefficients and stochastic unmodeled dynamic interactions.A decentralized adaptive output-feedback controller is designed to drive the outputs and states to the origin almost surely.

关键词： Stochastic Interconnected Systems SiISS Unmodeled Dynamics Virtual control Coefficients

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robust Stabilization and L2 Disturbance Attenuation of Time-Delay Hamiltonian control Systems with Uncertainties

Robust Stabilization and L2 Disturbance Attenuation of Time-...

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第三十届中国控制会议

作者： sun Weiwei,pANG Guochen,WU Yuqiang institute of automation,qufu normal university,qufu 273165,shandong,p.r.china

In this paper,new results are established for the robust stabilizabihty and L disturbance attenuation for a class of time-delay Hamiltonian control systems with uncertainties and external ***,the robust stability of the given systems is studied and a delay-dependent criterion is established based on the dissipative structural properties of the Hamiltonian systems and the Lyapunov-Krasovskii(L-K) functional ***,the problem of L disturbance attenuation is considered for the Hamiltonian systems subject to external *** is shown that the closed-loop systems under the adaptive feedback control law can guarantee the Y-dissipative inequalities be ***,several examples are provided to illustrate the theoretical developments.

关键词： Time-Delay Hamiltonian Systems L2 Disturbance Attenuation Asymptotic Stability Uncertainties

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robust Stabilization of Nonholonomic Systems with Unknown Time Delays

Robust Stabilization of Nonholonomic Systems with Unknown Ti...

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第三十届中国控制会议

作者： WU Yuanyuan~1,DIAO Zhihua~1,WU Yuqiang~2 1.College of Electric and Information engineering,Zhengzhou university of Light Industry,Zhengzhou 450002,p.r.china 2.research institute of automation,qufu normal university,qufu 273165,p.r.china

＜正＞This paper presents a control strategy for stabilization of the nonholonomic control systems with strongly nonlinear uncertainties and unknown time *** constructing appropriate Lyapunov functional,the uncertainties of unknown time delays are compensated *** scaling technique and backstepping recursive approach are applied to design the robust non-linear state feedback switching controllers,which can guarantee the stabilization of the closed loop *** results are provided to show the effectiveness of the proposed method.

关键词： Nonholonomic systems Time delay robust stabilization State scaling Backstepping

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