摘要
介绍了分形的基本概念,给出机械振动信号分析中主要应用的分形方法,对模拟信号进行了分形分析,然后对实际汽车振动信号进行了分形研究。结合小波分析方法,对汽车的复杂振动信号进行了分形分析,发现了汽车振动信号的复杂分形特征,分离出了典型频率的分形维数。
The basic conception of fractal isintroduced in the paper. The mostly applied fractal methods in mechanical vibration signal are presented. The analog signals and real automobile vibration sugnal are analyzed by fractal theory. The complex vibration signals of automobile are researched by fractal theory combine with wavelet analysis method. The complex fractal character of automobile vibration signals are discovered. The fractal dimension of typical frequency section is separated.
出处
《机电一体化》
2004年第6期88-91,共4页
Mechatronics
基金
国家自然科学基金项目(19972029)山东省自然科学基金资助项目(Y2000A01)。
