基于复杂度和符号空间的离心泵空化状态估计

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (1) : 127-130.

论文

基于复杂度和符号空间的离心泵空化状态估计

宋向荣1; 李建康2

作者信息 +

Pump cavitation state estimation based on the complexity and symbolic space

Song Xiang-rong1; Li Jian-kang2

Author information +

文章历史 +

摘要

对结构多个测点的振动响应序列，利用多值粗粒化方法转化为符号序列，进行Lempel-Ziv复杂度分析，构建描述结构的动力学特性符号空间。以某离心泵为例，利用符号空间方法对该泵空化状态进行估计，与工作模态分析方法对比验证了结论。为难以准确建模的复杂结构和复杂环境的状态估计提供一种新方法。

Abstract

In order to construct the symbolic space to descript the dynamic characteristics of structure, vibration response sequences of several points are measured. First, these sequences are converted to symbolic series by using the multi-segmented coarse-grained method. With the Lempel-Ziv complexity analysis, the symbolic space is constructed. A centrifugal pump is studied as an example. Its cavitation state is estimated in the symbolic space. It provides a novel method of state estimation to the complex structures difficult to exact modeling or the structures working in complexity environment.

导出引用

宋向荣;李建康. 基于复杂度和符号空间的离心泵空化状态估计 [J]. 振动与冲击, 2012, 31(1): 127-130

Song Xiang-rong;Li Jian-kang. Pump cavitation state estimation based on the complexity and symbolic space[J]. Journal of Vibration and Shock, 2012, 31(1): 127-130