液压缸运行动态特性的关联维数分析  

Correlative Dimension Analysis on Dynamic Properties of Moving Hydraulic Cylinder

作　　者：王林鸿[1] 郭俊杰[2] 吴波[1] 杨叔子[1] 

机构地区：[1]华中科技大学机械科学与工程学院,武汉430074 [2]南阳理工学院机电工程系,南阳473004

出　　处：《机床与液压》2006年第9期99-102,共4页Machine Tool & Hydraulics

基　　金：国家973计划资助项目(2005CB724101)

摘　　要：液压缸运行过程是典型的非线性动态过程。本文用研究非线性动力学系统有效方法之一的混沌理论的相空间重构和关联维数的理论与方法,对液压缸运行的混沌动态时间序列信号进行分析,结果表明:关联维数的大小可以反映液压缸运行过程中不同区段的稳定程度;关联维数的全程变化趋势可以反映液压缸运行过程中非线性弹簧的变化特征;关联维数的最大差值与平均值之比值可以用来判断液压缸是否存在爬行现象。The moving of hydraulic cylinder is a classic nonlinear dynamic process. By means of theory and methodology on phase - space reconstruction and correlative dimension from chaos theory., which is one of the most effective approaches used to research nonlinear dynamic system, chaotic dynamic time series of moving hydraulic cylinder were analyzed. The conclusions are drawn as follows. The different value of correlative dimension can be used to show different stable extent of different section of moving process of hydraulic cylinder. The varying trend of whole process can be used to reflect the varying characteristics of nonlinear spring of moving hydraulic cylinder. The ratio of the maximum difference and the average value of correlative dimension can be used to decide whether creeping phenomenon of hydraulic cylinder exists.

关 键 词：液压缸 非线性 相空间重构 关联维数 

分 类 号：TH137.51[机械工程—机械制造及自动化]