Active Vibration Control Design and, Experiment of the Flexible Plate with Mixed Uncertainty via μ-Synthesis

被引:0
作者
Li, Dongwei [1 ]
Bai, Hongbai [1 ]
Tao, Shuai [1 ]
Hou, Junfang [1 ]
机构
[1] Mech Engn Coll, Shijiazhuang 050003, Peoples R China
来源
2008 7TH WORLD CONGRESS ON INTELLIGENT CONTROL AND AUTOMATION, VOLS 1-23 | 2008年
关键词
flexible structure; active vibration control; mixed uncertainty model; robust control; mu-synthesis;
D O I
10.1109/WCICA.2008.4594053
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
A new kind of mu-synthesis controller design method of mixed uncertainty model was presented and proved from test results based on one flexible plate with which was bonded with piezoelectric actuators and sensors. Firstly, the MIMO transfer function model and the state space model of the vibration system were identified by the multivariable frequency-domain identification theory and the ERA method. On the base of the two models, the canonical uncertainty block diagonal matrix extraction method of modal parameter perturbation was designed by the means of eigenvalue decomposition of the test model system matrix and linear fraction transformation, at the same time the residual modal was expressed by the high band filter, then the mu-synthesis controller solution procedure was established which considered the mixed uncertainty of the test model. The active vibration control tests of the plate with three addition masses indicated, compared with the open-loop system, the attenuation time of initial disturbance was shortened 40s, the noise reduction of random disturbance was increased nearly 4dB.
引用
收藏
页码:7291 / 7296
页数:6
相关论文
共 1 条
[1]  
[李普 Li Pu], 2002, [振动工程学报, Journal of Vibration Engineering], V15, P451