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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.
The first-order analytical expression of the system response is calculated for a linear harmonic oscillator subject to harmonic excitation with frequency fluctuations. It is found that the output response of the system vibrates at a natural frequency and the response amplitude varies with the frequency of the harmonic excitation force Appears “real ” stochastic resonance, suppression and resonance with the natural frequency changes appear two phenomena.