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1. The problem of H∞ output tracking for cascade switched nonlinear systems | |||
DONG Xiao-Xiao,ZHAO Jun | |||
Information Science and System Science 07 January 2012 | |||
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Abstract:This paperinvestigates the H∞ output tracking control problem for aclass of cascade switched nonlinear systems. The solvabilityconditions for the H∞ output tracking control problem aredeveloped. Under a designed switching law, the tracking controlproblem of a switched nonlinear system is solvable if the subsystems satisfy certain conditions. A controller is also designed to solve the H∞ output tracking control problem based onthe multiple Lyapunov function method. An example illustrates theeffectiveness of the proposed approach. | |||
TO cite this article:DONG Xiao-Xiao,ZHAO Jun. The problem of H∞ output tracking for cascade switched nonlinear systems[OL].[ 7 January 2012] http://en.paper.edu.cn/en_releasepaper/content/4460489 |
2. Stability and attractive basins of equilibria in complex-valued recurrent neural networks | |||
Huang Yujiao,Wang Zhanshan | |||
Information Science and System Science 07 December 2011 | |||
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Abstract:This paper is concerned with multistability of complex-valued recurrent neural networks with a class nondecreasing piecewise linear activation function. By using decomposition of state space, sufficient conditions are established to ensure that n-dimensional complex-valued neural networks with a general class of activation function can have 9^n equilibria, 4^n of them are locally exponentially stable and others are unstable. Moreover, the attractive basins of equilibria are investigated. The results improve and extend the existing stability results in the literatures. One simulation example is given to illustrate the effectiveness of the results. | |||
TO cite this article:Huang Yujiao,Wang Zhanshan. Stability and attractive basins of equilibria in complex-valued recurrent neural networks[OL].[ 7 December 2011] http://en.paper.edu.cn/en_releasepaper/content/4454491 |
3. The quarantine and isolation control for SARS epidemics II | |||
LIU Xinjin,ZOU Yun | |||
Information Science and System Science 26 November 2011 | |||
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Abstract:In the absence of valid medicines or vaccine,quarantine and isolation strategies are the most important andeffective measures against the epidemics such as SARS (Severe AcuteRespiratory Syndrome). In this paper, the stability analysis of thedisease-free equilibrium for the Multi-area SEQIJR SARS propagationmodel with the quarantine and isolation control were investigated.The influence of the inter-area population flow to SARS control weremainly addressed. When the coupling matrix C describing theinter-area population flow has two special structures of outer:star-shaped coupled structure and globally coupled structure, thestability problems were studied in details. | |||
TO cite this article:LIU Xinjin,ZOU Yun. The quarantine and isolation control for SARS epidemics II[OL].[26 November 2011] http://en.paper.edu.cn/en_releasepaper/content/4450245 |
4. The quarantine and isolation control for SARS epidemics I | |||
LIU Xinjin,ZOU Yun | |||
Information Science and System Science 26 November 2011 | |||
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Abstract:In the absence of valid medicines or vaccine,quarantine and isolation strategies are the most important andeffective measures against the epidemics such as SARS (Severe AcuteRespiratory Syndrome). In this paper, the stability analysis of thedisease-free equilibrium for both Single area and Multi-area SEQIJRSARS transmission model with the quarantine and isolation controlwere addressed respectively. For the single area transmission model,the stability condition of the disease-free equilibrium were givenand reveal that when the levels of hygiene precautions duringisolation ξJ are very high, neither the quarantine ofasymptomatic individuals nor the isolation of symptomaticindividuals can control the epidemic separately, and the thresholdvalue of the ξJ were given correspondingly. For the Multi-areatransmission model, the influence of the inter-area population flowto SARS control were mainly considered. | |||
TO cite this article:LIU Xinjin,ZOU Yun. The quarantine and isolation control for SARS epidemics I[OL].[26 November 2011] http://en.paper.edu.cn/en_releasepaper/content/4450242 |
5. Synchronization Stability in an Array of Linearly Coupled Connected Neural Networks with Multiple Delays | |||
Wang Zhanshan,GONG Dawei | |||
Information Science and System Science 22 November 2011 | |||
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Abstract:In this paper, synchronization stability problem for arrays of linearly coupled multiple delayed neural networks is studied on the basis of LMI method. The derived results greatly improve and generalize some earlier results. Some key problems between stability of recurrent neural networks and synchronization stability of arrays of coupled neural networks are discussed in some Remarks. An numerical example is used to illustrate the effectiveness of the derived results. | |||
TO cite this article:Wang Zhanshan,GONG Dawei. Synchronization Stability in an Array of Linearly Coupled Connected Neural Networks with Multiple Delays[OL].[22 November 2011] http://en.paper.edu.cn/en_releasepaper/content/4451259 |
6. On stabilizability and exact observability of complex stochastic systems | |||
Wang Peng,Zhang Weihai | |||
Information Science and System Science 01 November 2011 | |||
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Abstract:This paper mainly studies the stabilizability and exact observability of complex stochastic linear systems. The real stochastic system, equivalent to the complex stochastic system, is constructed in order to study the stabilizability and exact observability of the complex stochastic system with the spectrum technique. Then a necessary and sufficient condition for the stabilizability of complex stochastic systems is given with the aid of the operator spectrum. A stochastic Popov-Belevith-Hautus Criterion for exact observability is presented. As an application, a result on Lyapunov-type equations is obtained. | |||
TO cite this article:Wang Peng,Zhang Weihai. On stabilizability and exact observability of complex stochastic systems[OL].[ 1 November 2011] http://en.paper.edu.cn/en_releasepaper/content/4448131 |
7. Straight-Line Path Following of Asymmetric Underactuated Ships | |||
Tao Dayong,Xie Wenjing,Ma Baoli | |||
Information Science and System Science 26 October 2011 | |||
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Abstract:For the non-linear model of an asymmetric underactuated surface ship with non-diagonal inertia and damping matrices, the straight-line path following control problem is investigated in this work. First, the error model is converted to an advantageous form by novel state and input transformations; the direct Lyapunov method and back-stepping approach are then used to derive a state feedback control law. The proposed control law guarantees global asymptotic convergence of the ship to the desired straight-line path with a desired surge speed which is supposed to be bounded and not convergent to zero. Simulation results show the effectiveness of proposed control law. | |||
TO cite this article:Tao Dayong,Xie Wenjing,Ma Baoli. Straight-Line Path Following of Asymmetric Underactuated Ships[OL].[26 October 2011] http://en.paper.edu.cn/en_releasepaper/content/4446542 |
8. Robust state feedback control in a Boost converter with uncertain parameters | |||
YANG Yang,XIANG Zhengrong | |||
Information Science and System Science 29 September 2011 | |||
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Abstract:In this paper, considering the capacitance equivalent series resistance (ESR) and load resistance which due to running conditions caused by the factors such as parameters change, Boost converters are mainly discussed. When the range of changes for uncertain parameters is not very large, Boost converters of small signal model with uncertain parameters still can be built. After building the model, based on linear matrix inequality (LMI) and Lyapunov stability theorem, sufficient conditions of robust stabilization for Boost converters are obtained. According to the uncertain parameters are unknown but bounded, Robust state feedback controllers are designed. Finally, the numerical simulations have verified the validity of this method. | |||
TO cite this article:YANG Yang,XIANG Zhengrong. Robust state feedback control in a Boost converter with uncertain parameters[OL].[29 September 2011] http://en.paper.edu.cn/en_releasepaper/content/4444267 |
9. Robust weighted H∞ control for a class of switched nonlinear systems with time delay | |||
CHEN Guoxin,XIANG Zhengrong | |||
Information Science and System Science 25 August 2011 | |||
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Abstract:This paper investigates the problem of robust weighted H∞ control for a class of switched nonlinear systems with time delay. Based on multiple Lyapunov function and the average dwell time method, stability criterion is derived by using LMI technique. Then the weighted H∞ performance of the switched systems is analyzed. Finally, robust weighted H∞ controller is designed. A numerical example is given to illustrate the effectiveness of the results. | |||
TO cite this article:CHEN Guoxin,XIANG Zhengrong. Robust weighted H∞ control for a class of switched nonlinear systems with time delay[OL].[25 August 2011] http://en.paper.edu.cn/en_releasepaper/content/4440783 |
10. Frequency Domain MIMO Identification for Modeling of Structural Dynamics | |||
TANG WEI | |||
Information Science and System Science 14 July 2011 | |||
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Abstract:Frequency domain system identification is widely used in the area of structural dynamic analysis. However, due to modeling errors, disturbances and measurement noise, the identified model may be unstable. In this paper, we propose two algorithms to identify structural dynamics with prior knowledge of stable poles. The first algorithm is based on subspace identification, and the second algorithm is based on maximum likelihood in the frequency domain. The corn difference with previous methods in that the new algorithms consider the poles constraint. We show the benefits of the proposed approaches in a simple example where the results of the first algorithm are used as an initial estimate for the second algorithm. | |||
TO cite this article:TANG WEI. Frequency Domain MIMO Identification for Modeling of Structural Dynamics[OL].[14 July 2011] http://en.paper.edu.cn/en_releasepaper/content/4434863 |
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