摘要
提出一种从Duffing振子产生的混沌信号中提取谐波分量的方法.依据任何信号由不同的固有简单振动模态组成的概念,利用经验模式分解(EMD)方法,将混沌信号分离为不同的内在模态函数(IMF),并在特定参数下从中分解出单一频率成分的谐波信号,从而成功地将混沌信号和谐波分量分离.仿真实验都表明该方法非常有效.
A novel approach of signal extraction of a harmonic component from a chaotic signal generated by a Duffing oscillator is proposed, Based on empirical mode decomposition（EMD） and concept that any signals were composed of a series of the simple intrinsic modes, the harmonic components were extracted from the chaotic signals. Simulation results show the approach is satisfactory.
出处
《应用数学和力学》
CSCD
北大核心
2006年第2期199-203,共5页
Applied Mathematics and Mechanics
基金
国家自然科学基金资助项目(10502032503350301032520950375094)
