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。-Changes in characteristics of the vibration signal, the new method of a multifractal spectrum to describe the complexity of the vibration signal.

单自由度振动系统 基于MATLAB建模仿真,根据单自由度振动系统数学模型(Single degree of freedom vibration system modeling and simulation based on MATLAB, according to the mathematical model of single degree of freedom vibration system)