基于关联维数的不同压力下液压管路振动信号的非线性分析  

Nonlinear Analysis of Hydraulic Pipe Vibrating Signals Under Different Pressures Based on Correlation Dimensions

作　　者：韩清鹏[1] 朱瑞[1] 梁磊[1] 

机构地区：[1]上海电力学院能源与机械工程学院,上海200090

出　　处：《上海电力学院学报》2016年第5期463-466,494,共5页Journal of Shanghai University of Electric Power

摘　　要：关联维数可定量分析不同压力状况下液压管路的工作状态.详细讨论了不同压力下液压管路系统的振动信号中关联维数的计算方法,并通过实验进行了分析.实验结果表明,通过偏相关积分算法计算得到的指数维数(关联维数近似值),能表征不同压力变化下的液压管路振动信号的变化,当压力变大时维数逐渐增大.The correlation dimensions can be applied to quantitatively analyze the hydraulic pipe vibration signal under different pressures.The correlation dimensions of the vibration signals of hydraulic pipe of different pressures,the fractal dimension changes of different frequency components of hydraulic pipe vibration signal under different pressures are discussed in detail.The correlation dimensions change with the frequency of hydraulic pipe vibration signals under different pressure is analyzed.It is showed that the correlation dimensions are an important parameter.

关 键 词：关联维数 液压管路 振动信号 非线性 

分 类 号：TH137[机械工程—机械制造及自动化]