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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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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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Distributed Fault Estimation for Nonlinear Systems With Sensor Saturation and Deception Attacks Using Stochastic Communication protocols

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IEEE/CAA Journal of Automatica Sinica 2024年第8期11卷 1865-1876页

作者： weiwei sun Xinci Gao Lusong Ding Xiangyu Chen institute of automation Qufu Normal UniversityQufu 273165China

This paper is aimed at the distributed fault estimation issue associated with the potential loss of actuator efficiency for a type of discrete-time nonlinear systems with sensor *** the distributed estimation structure under consideration,an estimation center is not necessary,and the estimator derives its information from itself and neighboring nodes,which fuses the state vector and the measurement *** an effort to cut down data conflicts in communication networks,the stochastic communication protocol(SCp)is employed so that the output signals from sensors can be ***,a recursive security estimator scheme is created since attackers randomly inject malicious signals into the selected *** this basis,sufficient conditions for a fault estimator with less conservatism are presented which ensure an upper bound of the estimation error covariance and the mean-square exponential boundedness of the estimating ***,a numerical example is used to show the reliability and effectiveness of the considered distributed estimation algorithm.

关键词： Actuator fault deception attacks distributed estimation sensor saturation stochastic communication protocol(SCp).

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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 Adaptive Control for robotic Systems With Input Time-Varying Delay Using Hamiltonian Method

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IEEE/CAA Journal of Automatica Sinica 2018年第4期5卷 852-859页

作者： Yong ren weiwei sun institute of automation Qufu Normal UniversityQufu 273165China School of Engineering Qufu Normal UniversityRizhao 276826China

This paper addresses the problem of robust adaptive control for robotic systems with model uncertainty and input time-varying delay. The Hamiltonian method is applied to develop the stabilization results of the robotic systems. Firstly, with the idea of shaping potential energy and the pre-feedback skill, the n degree-of-freedom(DOF) uncertain robotic systems are realized as an augmented dissipative Hamiltonian formulation with ***, based on the obtained Hamiltonian system formulation and by using of the Lyapunov-Krasovskii(L-K) functional method, an adaptive controller is designed to show that the robotic systems can be asymptotically stabilized depending on the input delay. Meanwhile, some sufficient conditions are spelt out to guarantee the rationality and validity of the proposed control law. Finally, study of an illustrative example with simulations shows that the controller obtained in this paper works very well in handling uncertainties and input delay in the robotic systems.

关键词： Adaptive controller Hamiltonian systems input delay Lyapunov-Krasovskii(L-K) functional robotic systems

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