首页|强迫Lorenz模型混沌行为的力学机理分析

强迫Lorenz模型混沌行为的力学机理分析

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为揭示混沌的生成机理,探讨了强迫Lorenz模型混沌行为的力学机制.将强迫Lorenz模型转化成柯尔莫哥洛夫系统,把系统的力矩分解成惯性力矩,耗散力矩和外力矩.分析各种力矩耦合模式对系统动力学行为的影响,从中揭示系统生成混沌的力学机理.研究表明只有耗散因素,驱动因素和内能都存在的全力矩模式下,并且驱动因素和耗散因素相匹配时强迫Lorenz系统才能产生混沌.构造卡西米尔函数进行全局稳定性分析,估计强迫Lorenz模型吸引子的边界.
Mechanical Mechanism Analysis of Forced Lorenz Model
In order to reveal the generation mechanism of chaos,the mechanical mechanism of forced Lorenz model is discussed.The forced Lorenz model is transformed into Kolmogorov sys-tem,and the torques of the system are decomposed into inertial torques,dissipative torques and external torques.The effects of various torque coupling modes on the System dynamics behavior are analyzed to reveal the mechanism of chaos generation.It is shown that only when the dissipa-tion factor,the driving factor and the internal energy exist in the full moment mode,and the driving factor and the dissipation factor match,the forced Lorenz system can produce chaos.The global stability of the forced Lorenz model is analyzed by constructing the Casimir function,and the boundary of the attractor of the forced Lorenz model is estimated.

chaosKolmogorov systemmechanical mechanismCasimir function

王贺元、陈相霆

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广东科技学院通识教育学院,广东东莞,523083

沈阳师范大学数学与系统科学学院,沈阳 110034

混沌 柯尔莫哥洛夫系统 力学机理 卡西米尔函数

2024

复杂系统与复杂性科学
青岛大学

复杂系统与复杂性科学

CSTPCD北大核心
影响因子:0.798
ISSN:1672-3813
年,卷(期):2024.21(4)