摘要
针对振动信号的变化特点,提出一种用多重分形谱描述振动信号复杂性的新方法.给出了振动信号多重分形谱的改进算法,并对振动信号多重分形谱的变化规律进行了仿真和试验研究.结果表明:改进后的多重分形谱反映了振动信号的特征,能够对振动信号进行识别.
A new method based on multifractal spectrum is developed to describe the complexity of vibration signal. A brief presentation about the improved algorithm of multifractal spectrum is firstly conducted, and then its evolution rule is studied through the experiment and simulation. The result shows that the improved multifractal spectrum reflects the character of vibration signal which can be used to recognize the vibration signal.
出处
《测试技术学报》
2006年第6期543-548,共6页
Journal of Test and Measurement Technology
基金
博士点基金资助项目(20020151007)
关键词
振动信号
分形理论
多重分形谱
改进算法
vibration signal
fractal theory
multifractal spectrum
improved algorithm
