A new controller design of electro-hydraulic servo system based on empirical mode decomposition

被引：0
|
作者：
Huang, Jing [1 ]
Li, Changchun [1 ]
Yan, Hao [1 ]
Yang, Xuesong [1 ]
Li, Jing [1 ]
机构：
[1] Beijing Jiaotong Univ, Beijing, Peoples R China
来源：
JOURNAL OF VIBROENGINEERING | 2016年 / 18卷 / 02期
关键词：
on-line filter; HHT; real time; electro-hydraulic servo system;
D O I：
暂无
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
The signal of electro-hydraulic servo system is non-stationary and time-varying due to the influence of vibration, noise and mechanical impact. The traditional digital filter always suffers delay in time domain and the delay increases along with the increasing of frequency. Considering the features of electro-hydraulic servo system, the Hilbert-Huang transform method is an effective method to decompose the original signal and obtain the noise components. Some improvements are made based on Hilbert Huang transform method and a new real time on-line filtering method is proposed in this paper. This improved filter is able to decompose out the noise components and other interference components from original signal, and remove them off in real time. Based on this new on-line filter, a new controller is also designed. Compared the filtering result with the traditional digital filter, this new controller's control performance is much better.
引用
收藏
页码：927 / 937
页数：11
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