系统仿真学报 ›› 2016, Vol. 28 ›› Issue (1): 139-146.

• 仿真应用工程 • 上一篇    下一篇

α稳定噪声下时滞非对称单稳系统的随机共振

焦尚彬, 李佳, 张青, 谢国   

  1. 西安理工大学自动化与信息工程学院,西安 710048
  • 收稿日期:2014-08-26 修回日期:2014-11-03 出版日期:2016-01-08 发布日期:2020-07-02
  • 作者简介:焦尚彬(1974-), 男, 四川宣汉, 博士, 教授,研究方向为非线性控制, 智能状态检测; 李佳(1991-), 女, 陕西西安, 硕士生, 研究方向为随机共振。
  • 基金资助:
    国家自然科学基金(61304204); 陕西省自然科学基础研究计划(2015JM6432); 西安理工大学特色研究计划

Stochastic Resonance in Time-delayed Asymmetric Monostable System with Stable Noise

Jiao Shangbin, Li Jia, Zhang Qing, Xie Guo   

  1. School of Automation and Information Engineering, Xi'an University of Technology, Xi'an 710048, China
  • Received:2014-08-26 Revised:2014-11-03 Online:2016-01-08 Published:2020-07-02

摘要: α稳定噪声与单稳系统相结合,分别研究了不同α稳定噪声环境下的无时滞项和有时滞项的非对称单稳系统的随机共振。利用数值仿真说明了在无时滞项和有时滞项的非对称单稳系统中均存在随机共振现象,并讨论了α稳定噪声特征指数α(0<α≤2)、对称参数β(-1≤β≤1)、单稳系统参数α、乘性噪声放大系数D、非对称系数r及时滞量r对系统信噪比增益的影响。

关键词: LLC谐振变换器, 大信号模型, 非线性系统, SSOC调制, 稳定噪声, 时滞, 非对称单稳系统, 信噪比增益

Abstract: α stable noise with monostable system was combined to investigate the stochastic resonance of the asymmetric monostable with time delay or not driven by different stable noise. The numerical simulation study shows that the stochastic resonance exists not only in the asymmetric monostable system but also in the time-delayed asymmetric monostable system. The effects of the stability index α (0<α≤2) and symmetric parameter β(-1≤β≤1) of α stable noise, the monostable system parameter α, the amplification factor D of multiplicative stable noise, the asymmetry parameter r and the time delay on the signal-to-noise ratio gain of the system were explored.

Key words: α, stable noise, time delay, asymmetric monostable stochastic resonance, signal-to-noise ratio gain

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