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分数阶混沌系统的仿真方法研究

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针对分数阶混沌系统的理论分析比较烦琐,基于分数阶混沌系统常用的频域和时域两种分析方法,研究了,分数阶混沌系统的动态仿真、电路仿其和数值仿真3种仿真方法。利用分数阶积分算子的频域描述函数,设计了分数阶积分算子的动态仿真模块和等效电路模块,通过分数阶混沌系统动态仿真和电路仿真,可实时地观察系统变量的演化规律;采用分数阶微分算子的Adams.Bashforth-Moulton预估校正算法,实现了分数盼琨沌系统的数值仿真,利用仿真输出数据可分析分数阶混沌系统的动力学特性。分数阶非耗散Lorenz混沌系统仿真实例证明了这3种仿真方法的有效性。
Study of Simulation Approaches for Fractional-order Chaotic Systems
To solve problems of theory analysis for fractional-order chaotic systems at present, three simulation approaches, including dynamical simulation, circuit simulation and numerical simulation, were investigated based on the analysis methods of fractional-order chaotic systems in frequency-domain and time-domain respectively. The fractional-order integral operator dynamical simulation model and circuit simulation model were designed according to the fractional-order integral operator representation in frequency domain. The process of variable evolvement with time can be observed on time by dynamical simulation and circuit simulation. The numerical simulation was achieved by employing the Adams-Bashforth-Moulton predictor-corrector scheme for fractional-order differential operator. The dynamic performances of fractional-order chaotic system can be analyzed by using simulation output data. The simulation results of fractional-order diffusionless Lorenz system show that all the three simulation approaches are effective.

Chaosfractional-order calculusdynamic simulationcircuit simulationnumerical simulation

孙克辉、杨静利、丘水生

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中南大学物理科学与技术学院,长沙410083/华南理工大学电子与信息学院,广州510641

中南大学物理科学与技术学院,长沙410083

华南理工大学电子与信息学院,广州510641

混沌 分数阶微积分 动态仿真 电路仿真 数值仿真

中国博士后科学基金国家自然科学基金

2007042077461073187

2011

系统仿真学报
北京仿真中心 中国系统仿真学会

系统仿真学报

CSTPCDCSCD北大核心
影响因子:0.551
ISSN:1004-731X
年,卷(期):2011.23(11)
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