| 具有随机特征频率和延迟核函数的分数阶线性振荡器中的随机共振 |
| |
| 引用本文： | 朱福成,郭锋.具有随机特征频率和延迟核函数的分数阶线性振荡器中的随机共振[J].振动与冲击,2021(7):75-80. |
| |
| 作者姓名： | 朱福成 郭锋 |
| |
| 作者单位： | 绵阳职业技术学院教学指导委员会;西南科技大学信息工程学院 |
| |
| 基金项目： | 国家自然科学基金面上项目(61771411)。 |
| |
| 摘 要： | 研究了具有延迟核函数和随机特征频率的分数阶线性振荡器中的随机共振(stochastic resonance,SR)现象。基于线性系统理论,利用拉普拉斯变换,推导出了分数维振荡器系统输出幅度(system output amplitude,SOA)的解析表达式。分析表明,SOA是核函数延迟时间的周期函数。在SOA与噪声相关率、噪声幅值、分数维数的关系曲线上都发现了随机共振现象。分析了SOA与系统参数及噪声稳态概率间的非单调依赖行为。
|
| 关 键 词： | 随机共振(SR) 分数维线性振荡器 延迟核函数 随机频率 |
Stochastic resonance in a fractional order linear oscillator with random characteristic frequency and time-delayed kernel function |
| |
| ZHU Fucheng,GUO Feng.Stochastic resonance in a fractional order linear oscillator with random characteristic frequency and time-delayed kernel function[J].Journal of Vibration and Shock,2021(7):75-80. |
| |
| Authors: | ZHU Fucheng GUO Feng |
| |
| Affiliation: | (Teaching Supervisory Committee,Mianyang Polytechnic,Mianyang 621000,China;School of Information Engineering,Southwest University of Science and Technology,Mianyang 621010,China) |
| |
| Abstract: | Stochastic resonance(SR)phenomena in a fractional order linear oscillator with time-delayed kernel function and random characteristic frequency were investigated.Base on the linear system theory,using Laplace transformation,the analytical expression for the system output amplitude(SOA)of a fractional order oscillator was derived.It was shown that SOA is a periodic function of delayed-time of the kernel function;SR phenomena appear in relation curves of SOA versus noise correlation rate,SOA versus noise amplitude,and SOA versus fractional dimension,respectively.The non-monotonous dependence of SOA on system parameters and noise steady-state probability was analyzed. |
| |
| Keywords: | stochastic resonance(SR) fractional order linear oscillator time-delayed kernel function random characteristic frequency |
| 本文献已被 CNKI 维普 等数据库收录！ |
