通过一个基本的双变量模型,研究了共同噪音对于生物钟的集体行为的积极作用。发现共同噪音可以在2个非耦合体系的近分叉点稳态区诱导出同步的振荡。另外,内噪音对这种共同噪音诱导的同步振荡有消极的作用,但是振荡的同步性并没有被内噪音明显的降低,说明这种振荡对内噪音具有鲁棒性。 Through a basic bivariate model, the positive effects of co-noise on the collective behavior of the circadian clock are studied. It is found that the common noise can induce synchronous oscillations in the near-bifunctional steady-state region of two uncoupled systems. In addition, the internal noise has a negative effect on the synchronous noise induced by the common noise, but the synchronization of the oscillation is not significantly reduced by the internal noise, indicating that the oscillation is robust to the internal noise.