共查询到20条相似文献,搜索用时 15 毫秒
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This Letter investigates the finite-time consensus problems of second-order multi-agent systems in the presence of one and multiple leaders under a directed graph. Specifically, we propose two bounded control laws, which are independent of velocity information, to deal with the finite-time consensus tracking problem with one leader and the finite-time containment control problem with multiple leaders, respectively. With the aid of homogeneous theory, some sufficient conditions are established for the achievement of the finite-time tracking control problem of second-order multi-agent systems. Numerical examples are finally provided to illustrate the theoretical results. 相似文献
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Fault-tolerant finite-time dynamical consensus of double-integrator multi-agent systems with partial agents subject to synchronous self-sensing function failure 下载免费PDF全文
Zhi-Hai Wu 《中国物理 B》2022,31(12):128902-128902
This paper investigates fault-tolerant finite-time dynamical consensus problems of double-integrator multi-agent systems (MASs) with partial agents subject to synchronous self-sensing function failure (SSFF). A strategy of recovering the connectivity of network topology among normal agents based on multi-hop communication and a fault-tolerant finite-time dynamical consensus protocol with time-varying gains are proposed to resist synchronous SSFF. It is proved that double-integrator MASs with partial agents subject to synchronous SSFF using the proposed strategy of network topology connectivity recovery and fault-tolerant finite-time dynamical consensus protocol with the proper time-varying gains can achieve finite-time dynamical consensus. Numerical simulations are given to illustrate the effectiveness of the theoretical results. 相似文献
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Finite-time synchronization of complex dynamical networks with multi-links via intermittent controls
Mingwen Zheng Lixiang Li Haipeng Peng Jinghua Xiao Yixian Yang Hui Zhao Jingfeng Ren 《The European Physical Journal B - Condensed Matter and Complex Systems》2016,89(2):43
This paper considers finite-time synchronization of complex multi-links dynamicalnetworks with or without internal time delays via intermittent controls. Two simpleintermittent feedback controllers are designed to achieve finite-time synchronizationbetween the drive and response system. Some novel and effective finite-timesynchronization criteria are derived based on finite-time stability analysis techniques.By constructing suitable Lyapunov functions, we theoretically prove its correctness.Finally, two numerical simulation examples are given to show the effectiveness of proposedmethod in this paper. 相似文献
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Mingwen Zheng Lixiang Li Haipeng Peng Jinghua Xiao Yixian Yang Hui Zhao 《The European Physical Journal B - Condensed Matter and Complex Systems》2016,89(9):204
In this paper, we study the finite-time stability and synchronization problem of a classof memristor-based fractional-order Cohen-Grossberg neural network (MFCGNN) with thefractional order α ∈ (0,1]. We utilize the set-valued map and Filippov differential inclusion totreat MFCGNN because it has discontinuous right-hand sides. By using the definition ofCaputo fractional-order derivative, the definitions of finite-time stability andsynchronization, Gronwall’s inequality and linear feedback controller, two new sufficientconditions are derived to ensure the finite-time stability of our proposed MFCGNN andachieve the finite-time synchronization of drive-response systems which are constituted byMFCGNNs. Finally, two numerical simulations are presented to verify the rightness of ourproposed theorems. 相似文献
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The drive-response of memory feedback control design for memristor neural networks of neutral type over finite-time domain is scrutinized in this paper. Notably, the main purpose of this work is to synthesize memory feedback controller in the presence of logarithmic quantizer and actuator saturation to guarantee the finite-time boundedness of the resulting memristive neural networks. On basis of proper Lyapunov–Krasovskii-functional and linear matrix inequalities, new sufficient criterian is established to assure the delay-dependent finite-time stabilization criteria for the addressed network model. Also, by solving the developed linear matrix inequalities, the finite-time memory feedback control law gain matrices could be attained. Eventually, the validations of the proposed mechanism are ultimately explored through two numerical examples. 相似文献
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In this paper, the finite-time stochastic outer synchronization between two different complex dynamical networks with noise perturbation is investigated. By using suitable controllers, sufficient conditions for finite-time stochastic outer synchronization are derived based on the finite-time stability theory of stochastic differential equations. It is noticed that the coupling configuration matrix is not necessary to be symmetric or irreducible, and the inner coupling matrix need not be symmetric. Finally, numerical examples are examined to illustrate the effectiveness of the analytical results. The effect of control parameters on the settling time is also numerically demonstrated. 相似文献
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Some criteria for achieving the finite-time synchronization of a class of autonomous chaotic systems are derived by the finite-time stability theory and Gerschgorin disc theorem. Numerical simulations are shown to illustrate the effectiveness of the proposed method. 相似文献
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This paper investigates the finite-time generalized outer synchronization between two complex dynamical networks with different dynamical behaviors. The two networks can be undirected or directed, and they may also contain isolated nodes and clusters. By using suitable controllers, sufficient conditions for finite-time generalized outer synchronization are derived based on the finite-time stability theory. Finally, numerical examples are examined to illustrate the effectiveness of the analytical results. The effect of control parameters on the synchronization time is also numerically demonstrated. 相似文献
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Design of an adaptive finite-time controller for synchronization of two identical/different non-autonomous chaotic flywheel governor systems 下载免费PDF全文
Mohammad Pourmahmood Aghababa 《中国物理 B》2012,(3):101-111
The centrifugal flywheel governor(CFG) is a mechanical device that automatically controls the speed of an engine and avoids the damage caused by sudden change of load torque.It has been shown that this system exhibits very rich and complex dynamics such as chaos.This paper investigates the problem of robust finite-time synchronization of non-autonomous chaotic CFGs.The effects of unknown parameters,model uncertainties and external disturbances are fully taken into account.First,it is assumed that the parameters of both master and slave CFGs have the same value and a suitable adaptive finite-time controller is designed.Second,two CFGs are synchronized with the parameters of different values via a robust adaptive finite-time control approach.Finally,some numerical simulations are used to demonstrate the effectiveness and robustness of the proposed finite-time controllers. 相似文献
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This paper investigates the finite-time generalized outer synchronization between two complex dynamical networks with different dynamical behaviors. The two networks can be undirected or directed, and they may also contain isolated nodes and clusters. By using suitable controllers, sufficient conditions for finite-time generalized outer synchronization are derived based on the finite-time stability theory. Finally, numerical examples are examined to illustrate the effectiveness of the analytical results. The effect of control parameters on the synchronization time is also numerically demonstrated. 相似文献
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Design of an adaptive finite-time controller for synchronization of two identical/different non-autonomous chaotic flywheel governor systems 下载免费PDF全文
Mohammad Pourmahmood Aghababa 《中国物理 B》2012,21(3):30502-030502
The centrifugal flywheel governor (CFG) is a mechanical device that automatically controls the speed of an engine and avoids the damage caused by sudden change of load torque. It has been shown that this system exhibits very rich and complex dynamics such as chaos. This paper investigates the problem of robust finite-time synchronization of non-autonomous chaotic CFGs. The effects of unknown parameters, model uncertainties and external disturbances are fully taken into account. First, it is assumed that the parameters of both master and slave CFGs have the same value and a suitable adaptive finite-time controller is designed. Second, two CFGs are synchronized with the parameters of different values via a robust adaptive finite-time control approach. Finally, some numerical simulations are used to demonstrate the effectiveness and robustness of the proposed finite-time controllers. 相似文献
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This paper investigates the problem of the stochastic finite-time stability of reaction-diffusion Cohen-Grossberg neural networks with time varying delays using the Dirichlet boundary condition. The concept of finite-time stability for the system is first derived by using the stochastic conditions. By constructing a new Lyapunov–Krasovskii functional and utilizing Jensen’s inequality, Wirtinger’s type inequality technique, the Gronwall inequality and the linear matrix inequality (LMI) frame work, conditions are obtained which guarantee the stochastically finite-time stability of Cohen–Grossberg neural networks. Finally, two numerical examples are given to show the effectiveness of the proposed results. 相似文献
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Zhan-Chun Tu 《Frontiers of Physics》2021,16(3):33202
We retrospect three abstract models for heat engines which include a classic abstract model in textbook of thermal physics, a primary abstract model for finite-time heat engines, and a refined abstract model for finite-time heat engines. The detailed models of heat engines in literature of finite-time thermodynamics may be mapped into the refined abstract model. The future developments based on the refined abstract model are also surveyed. 相似文献
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A novel adaptive finite-time controller for synchronizing chaotic gyros with nonlinear inputs 下载免费PDF全文
Mohammad Pourmahmood Aghababa 《中国物理 B》2011,20(9):90505-090505
In this paper, the problem of the finite-time synchronization of two uncertain chaotic gyros is discussed. The parameters of both the master and the slave gyros are assumed to be unknown in advance. The effects of model uncertainties and input nonlinearities are also taken into account. An appropriate adaptation law is proposed to tackle the gyros' unknown parameters. Based on the adaptation law and the finite-time control technique, proper control laws are introduced to ensure that the trajectories of the slave gyro converge to the trajectories of the master gyro in a given finite time. Simulation results show the applicability and the efficiency of the proposed finite-time controller. 相似文献
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《Chinese Journal of Physics (Taipei)》2018,56(5):2265-2274
This paper investigates the finite-time rotating target-encirclement control problem for multi-agent systems with a leader, in which the leader can obtain the state information of the target, whereas followers cannot. A novel finite-time rotating encirclement protocol is proposed, containing the state estimators of the target and the leader. Besides, some sufficient conditions are given for achieving finite-time rotating encirclement target-tracking. The validity of the achieved results is eventually assessed by a numerical example. 相似文献
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Multi-rate sensor fusion-based adaptive discrete finite-time synergetic control for flexible-joint mechanical systems 下载免费PDF全文
This paper proposes an adaptive discrete finite-time synergetic control (ADFTSC) scheme based on a multi-rate sensor fusion estimator for flexible-joint mechanical systems in the presence of unmeasured states and dynamic uncertainties. Multi-rate sensors are employed to observe the system states which cannot be directly obtained by encoders due to the existence of joint flexibilities. By using an extended Kalman filter (EKF), the finite-time synergetic controller is designed based on a sensor fusion estimator which estimates states and parameters of the mechanical system with multi-rate measurements. The proposed controller can guarantee the finite-time convergence of tracking errors by the theoretical derivation. Simulation and experimental studies are included to validate the effectiveness of the proposed approach. 相似文献