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研究非周期信号激励下Duffing振子动力学行为变化特征时,发现处于倍周期分岔的环形耦合Duffing振子系统,在一定的参数条件下,脉冲信号能引起其中一个振子与其他振子运动轨迹间出现短暂失同步的现象即瞬态同步突变现象.利用这种现象可以快速检测出强噪声背景中的微弱脉冲信号,从而扩展了现有的Duffing振子对非周期信号的检测范围及应用领域.
When studying the characteristics of the dynamics of a Duffing oscillator excited by aperiodic signals, it is found that the ring-coupled Duffing oscillator system is in a period-doubling bifurcation. Under certain parameters, the pulse signal can cause the transient between one oscillator and the other. The phenomenon of loss of synchronism is transient synchronic mutation.This phenomenon can quickly detect the weak pulse signal in the strong noise background, thus extending the detection range and application field of the existing Duffing oscillator to the non-periodic signal.