【摘要】 在研究相空间重构理论的基础上 ,首次提出了关联距离熵的概念 ,给出了其数学表达式Hd。Hd 体现了系统的本质特征 ,反映了系统在相空间中点分布的疏密程度、重构吸引子轨道的分布及形状。将其运用于 613 5柴油机气门漏气故障诊断中 ,取得了较好的效果。更多还原

【Abstract】 By investigaring the theory of phase space reconstruction,the concept of correlation distance entropy is presented and its mathematical expression H d is also deduced.H d embodies the intrinsic properties of the system and reflects the distribution density of the phase points,the distribution and shape of the reconstructed attractors in phase space.Experiments are carried out on a four-strokes and six-cylinders diesel engine.Cylinder head vibration signals under different states of the valve train are measured.H d of these vibration signals are worked out and good results are gotten when using them to perform the diagnosis for the valve train.更多还原