Tianxu Li , Xudong Sun , Qiubao Wang , Xiuying Guo , Zikun Han
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引用次数: 0
摘要
本文研究了带时间延迟的倒立摆系统在分数高斯噪声激励下的控制和动态行为。对于 H=1/2 和 H∈(1/2,1),我们利用时间延迟和噪声强度作为分岔参数,分析了系统在霍普夫分岔下的随机动态特性,并通过数值模拟验证了理论结论。我们还定义了渐近稳定和周期振荡动态状态下角度和角速度的工程应用范围。此外,利用随机伊托方程,我们确定了满足角度和角速度最大工程应用范围的时间延迟值和噪声强度值,并根据原始方程验证了其准确性。此外,我们还观察到在时间延迟和噪声的共同作用下产生的随机 D 型分岔和 P 型分岔。我们的结果表明,分析结果与数值结果之间具有明显的一致性,这肯定了我们的方法的稳健性,并揭示了系统错综复杂的动态变化。
Control and stochastic dynamic behavior of Fractional Gaussian noise-excited time-delayed inverted pendulum system
In this paper, we investigate the control and dynamic behavior of the inverted pendulum system with time delay under fractional Gaussian noise excitation. For H=1/2 and H, we analyze the stochastic dynamic characteristics of the system under Hopf bifurcation, utilizing time delay and noise intensity as bifurcation parameters, and validate the theoretical conclusions through numerical simulations. We also defined the engineering application range of angle and angular velocity under both asymptotically stable and periodic oscillation dynamic states. Furthermore, using the stochastic equation, we determined the values of time delay and noise intensity that satisfy the maximum engineering application range of angle and angular velocity, and verified their accuracy against the original equation. Additionally, we observed stochastic D-bifurcation and P-bifurcation arising from the combined effects of time delay and noise. Our results exhibit remarkable consistency between analytical and numerical findings, affirming the robustness of our approach and shedding light on the intricate dynamics of the system.
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The journal publishes original research findings on experimental observation, mathematical modeling, theoretical analysis and numerical simulation, for more accurate description, better prediction or novel application, of nonlinear phenomena in science and engineering. It offers a venue for researchers to make rapid exchange of ideas and techniques in nonlinear science and complexity.
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Topics of interest:
Nonlinear differential or delay equations, Lie group analysis and asymptotic methods, Discontinuous systems, Fractals, Fractional calculus and dynamics, Nonlinear effects in quantum mechanics, Nonlinear stochastic processes, Experimental nonlinear science, Time-series and signal analysis, Computational methods and simulations in nonlinear science and engineering, Control of dynamical systems, Synchronization, Lyapunov analysis, High-dimensional chaos and turbulence, Chaos in Hamiltonian systems, Integrable systems and solitons, Collective behavior in many-body systems, Biological physics and networks, Nonlinear mechanical systems, Complex systems and complexity.
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