记忆信号调制随机自参数动力吸振摆系统的共振响应分析
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国家自然科学基金资助项目 (12372033),陕西数理基础科学研究资助项目 (22JSQ029)


Resonance Response Analysis of the Stochastic Auto-parametric Dynamic Vibration Absorption Pendulum System Modulated by Memory Signals
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    摘要:

    本文主要考虑加速度耦合态时滞反馈与自反馈信号对随机载荷下自参数动力吸振摆结构共振行为的作用机制.引进三阶尺度摄动方法对随机自参数动力吸振摆耦合系统的确定情形、随机情形共振响应以及振态模式稳定性临界判定指标进行分析,同步应用数值模拟技术分别从振幅-载荷确定性响应、随机载荷因子对振态时空轨迹的影响及振态随机矩响应等多层面分析评估与仿真测算系统主子振态关于记忆信号调制的共振规律.探寻确定性矩解随载荷强度变化特征,明确噪声强度因子基于相调制形成有界随机载荷引致系统相态轨迹的演化规律.此外,观察到振态随机矩保持了主子振态通过主内共振调制产生的现象;记忆反馈信号引起系统振态矩呈现周期性及稳性交替,系统振态敏感于耦合记忆反馈增益改变及耦合记忆性振态模式引起系统能量更迭.本文的探索方法与研究路径为记忆反馈信号调制自参数动力吸振摆随机工况下振态稳定性的设计模式发展了新思路.

    Abstract:

    The mechanism of the time-delayed feedback and the auto-feedback signals of the coupled acceleration state on the resonance behavior of an auto-parametric dynamic vibration absorption pendulum structure under random loads is investigated. The third-order scale perturbation method is introduced to analyze the resonance responses in deterministic and random cases of the stochastic coupling auto-parametric dynamic vibration absorption pendulum system, as well as the critical criteria for determining the stability of vibration modes. Synchronously applying numerical simulation techniques to evaluate and simulate the resonance laws of the main and subsidiary vibration modes modulated by memory signals from multiple levels, including the deterministic amplitude-load response, the influence of the random load factor on the spatiotemporal trajectory of the system states, and the system random moment response. Further explore the characteristics of the deterministic moment solution varying with the load intensity, and clarify the evolution law of the system phase trajectory caused by bounded random loads formed by phase modulation based on the noise intensity factor. Besides, the random moments of system states maintain the phenomenon of main and subsidiary vibration modes through the modulation of main and internal resonances. Memory feedback signals cause the system vibration moments to exhibit periodicity and stability alternation, and system oscillation modes are sensitive to changes in the coupled memory feedback gain and this pattern leads to the system’s energy to be renewed. New ideas are developed in this paper for the stability design mode by the memory feedback signals modulation on the auto-parametric dynamic vibration absorption pendulum under random situations.

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王德莉,张梦,韦玮,裴海清,都琳,徐伟.记忆信号调制随机自参数动力吸振摆系统的共振响应分析[J].动力学与控制学报,2025,23(4):57~68; Wang Deli, Zhang Meng, Wei Wei, Pei Haiqing, Du Lin, Xu Wei. Resonance Response Analysis of the Stochastic Auto-parametric Dynamic Vibration Absorption Pendulum System Modulated by Memory Signals[J]. Journal of Dynamics and Control,2025,23(4):57-68.

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  • 收稿日期:2025-02-07
  • 最后修改日期:2025-02-23
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  • 在线发布日期: 2025-04-30
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