检索结果-南通市图书馆

Chaos and chaotic control in a relative rotation nonlinear dynamical system under parametric excitation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2010年第9期19卷 112-117页

作者：时培明韩东颖刘彬 Key Laboratory of Measurement Technology and Instrument of Hebei Province Yanshan University College of Electrical Engineering Yanshan University College of Vehicles and Energy Yanshan University

This paper studies the chaotic behaviours of a relative rotation nonlinear dynamical system under parametric excitation and its control. The dynamical equation of relative rotation nonlinear dynamical system under parametric excitation is deduced by using the dissipation Lagrange equation. The. criterion of existence of chaos under parametric excitation is given by using the Melnikov theory. The chaotic behaviours are detected by numerical simulations including bifurcation diagrams, Poincare map and maximal Lyapunov exponent. Furthermore, it implements chaotic control using nomfeedback method. It obtains the parameter condition of chaotic control by the Melnikov theory. Numerical simulation results show the consistence with the theoretical analysis. The chaotic motions can be controlled to periodmotions by adding an excitation term.

关键词： relative rotation nonlinear dynamical system parametric excitation chaotic control

Neural adaptive chaotic control with constrained input using state and output feedback

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2015年第1期24卷 170-176页

作者：高士根董海荣孙绪彬宁滨 State Key Laboratory of Rail Traffic control and Safety Beijing Jiaotong University School of Electronic and Information Engineering Beijing Jiaotong University

This paper presents neural adaptive control methods for a class of chaotic nonlinear systems in the presence of constrained input and unknown dynamics. To attenuate the influence of constrained input caused by actuator saturation, an effective auxiliary system is constructed to prevent the stability of closed loop system from being destroyed. Radial basis function neural networks（RBF-NNs） are used in the online learning of the unknown dynamics, which do not require an off-line training phase. Both state and output feedback control laws are developed. In the output feedback case, high-order sliding mode（HOSM） observer is utilized to estimate the unmeasurable system states. Simulation results are presented to verify the effectiveness of proposed schemes.

关键词： chaotic control neural adaptive control constrained input

Chaos and chaotic control in a fractional-order electronic oscillator

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2005年第5期14卷 908-913页

作者：高心虞厥邦 SchoolofElectronicEngineering UniversityofElectronicsScienceandTechnologyofChinaChengdu610054China//SchoolofElectricalandInformationEngineeringSouthwestUniversityforNationalitiesofChinaChengdu610041China SchoolofElectronicEngineering UniversityofElectronicsScienceandTechnologyofChinaChengdu610054China

In this paper, we study the chaotic behaviours in a fractional-order chaotic electronic oscillator. We find that chaos exists in the fractional-order electronic oscillator with an order being less than 3. In addition, we numerically simulate the continuance of the chaotic behaviours in the electronic oscillator with orders ranging from 2.8 to 3.2. Finally, we further investigate the method of controlling a fractional-order electronic oscillator based on adaptive *** simulations show the effectiveness and feasibility of this approach.

关键词： fractional order chaos chaotic control adaptive backstepping

chaotic control OF NONLINEAR SYSTEMS BASED ON IMPROVED CORRELATIVITY

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Electronics(China) 2003年第2期20卷 132-136页

作者： Zhou Xiaoan Zhang Jihong (College of Information Eng., Shenzhen University, Shenzhen 518060) College of Information Eng. Shenzhen University Shenzhen

chaotic sequences are basically ergodic random sequences. By improving correlativity of a chaotic signal, the chaotic dynamic system can be controlled to converge to its equilibrium point and, more significantly, to its multi-periodic orbits. Mathematical theory analysis is carried out and some computer simulation results are provided to support such controllability of the chaotic Henon system and the discrete coupled map lattice.

关键词： chaotic control Correlativity Henon map The coupled map lattice

Bang Bang control of Unified chaotic System

在线全文

学校读者我要写书评

暂无评论

Wuhan University Journal of Natural Sciences 2003年第S1期8卷 311-315页

作者： Deng Xiao-ming, Lu Jun-anSchool of Mathematics and Statistics,Wuhan University, Wuhan 430072,Hubei,China School of Mathematics and Statistics Wuhan University Wuhan Hubei China

The unified chaotic system contains the Lorenz system and the Chen system as two dual systems at the two extremes of its parameter spectrum. This paper presents the design of bang bang controller for unified system and multitude of numerical experiments under various control parameters. Numerical experiments meet the theoretic proof perfectly and convincingly demonstrated the controller can be effectively used for unified systems with uncertainty of the equilibrium points. The method enriches the applications of chaotic control.

关键词： chaotic control bang bang control unified system

An observer based asymptotic trajectory control using a scalar state for chaotic systems

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2006年第7期15卷 1454-1459页

作者：禹东川夏临华王冬青 College of Automation Engineering Qingdao University Qingdao 266071 China

A state-observer based full-state asymptotic trajectory control （OFSTC） method requiring a scalar state is presented to asymptotically drive all the states of chaotic systems to arbitrary desired trajectories. It is no surprise that OFSTC can obtain good tracking performance as desired due to using a state-observer. Significantly OFSTC requires only a scalar state of chaotic systems. A sinusoidal wave and two chaotic variables were taken as illustrative tracking trajectories to validate that using OFSTC can make all the states of a unified chaotic system track the desired trajectories with high tracking accuracy and in a finite time. It is noted that this is the first time that the state-observer of chaotic systems is designed on the basis of Kharitonov＇s Theorem.

关键词： trajectory control chaotic control state observer a unified chaotic system

A simple asymptotic trajectory control of full states of a unified chaotic system

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2006年第2期15卷 306-309页

作者：禹东川吴爱国王冬青 School of Electrical Engineering and Automation Tianjin University Tianjin 300072 China College of Automation Engineering Qingdao University Qingdao 266071 China

A simple full-state asymptotic trajectory control （FSATC） scheme is proposed to asymptotically drive full states of a unified chaotic system （UCS） to arbitrary desired trajectories. The FSATC uses only information, i.e. one state of the UCS. A sinusoidal wave and two chaotic variables are taken as illustrative tracking trajectories to verify that using the proposed FSATC can make full UCS states track desired trajectories with high tracking accuracy in a finite time.

关键词： chaotic control a unified chaotic system trajectory control

New chaotic Attractors and Sliding Mode control of Rigid-body Rotation Dynamical System

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

New Chaotic Attractors and Sliding Mode Control of Rigid-bod...

The control of chaotic attitude motion of a perturbed spacecraft

2010 Chinese control and Decision Conference

作者：孔令云樊养余 School of Electronics and Information Northwestern Polytechnical University

Several new chaotic attractors were found from the Euler’s dynamical equation which describes the rotation motion of a perturbed rigid *** new chaotic attractors not only include double-core chaotic attractors,like as Lorenz(Chen,Lu, and Leipnik-Newton) attractors,but also single-core chaotic attractors like as Rossler attractor.A sliding mode control method with input nonlinearity is applied to this class of chaotic dynamical system to suppress the chaos and regulate the state trajectory of this system to the given fixed point.

关键词： Rigid Body Dynamics chaotic Attractor chaotic control sliding mode control

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

The control of chaotic attitude motion of a perturbed spacec...