【摘要】 针对线性谐振子受到具有频率涨落的简谐力激励的情况,计算出系统响应的一阶矩解析表达式.研究发现系统的输出响应以固有频率振动,响应振幅随简谐激励力频率的变化出现"真实"随机共振,随固有频率的变化出现抑制和共振两种现象.更多还原

【Abstract】 In view of the situation that the linear harmonic oscillator is subjected to the simple harmonic force with the frequency fluctuation, we work out the expression of the first-order moment for the system response.It is found that the system output response vibrates at the natural frequency,that the response amplitude shows bona-fide stochastic resonance as the simple harmonic excitation force frequency varies,and that the suppression and the resonance appears as the natural frequency varies.更多还原