摘要
建立了磁流变减振系统的振动测试信号的时间序列AR模型,绘制了AR三谱及其切片图,分析了不同工作频率与控制电流下系统的动力学性能变化,计算了各切片谱的关联维数.结果表明,各切片谱的复杂程度及变化规律与其关联维数存在对应关系,三谱切片及其关联维数可用于定性和量化衡量系统的动力学特性。
The time series AR mode of the vibration signal for MR damping system is founded, the trispectrum and its slices are plotted, the change of the dynamic performance is analyzed under differ- ent working frequency and controlling current, correlation dimensions of the trispeetrum slices are cal- culated. The result shows that, the correspondence between the complexity and rule of all slices and its correlation dimensions, the trispectrum slices and its correlation dimensions can also be evaluated for the dynamic performance analysis of the damping system from qualitative and quantitative analysis
出处
《福州大学学报（自然科学版）》
CAS
CSCD
北大核心
2012年第2期209-216,共8页
Journal of Fuzhou University(Natural Science Edition)
基金
国家自然科学基金资助项目(50975098)
福建省重大科技专项资助项目(2008HZ0002-1)
关键词
三谱切片
关联维数
动力学特性
trispectrum slice
correlation dimension
dynamic performance
