中国机械工程2009，Vol.20Issue(20)：2414-2420,7.
柔性板μ综合振动主动控制设计与实验研究
Active Vibration Control:Design and Experimentation of Flexible Plate via μ-Synthesis
摘要
Abstract
A new kind of μ-synthesis controller design method of mixed uncertainty model was presented and proved from test results based on a flexible plate which was bonded with piezoelectric actuators and sensors. Firstly, the MIMO(multi input multi output) transfer function model and the state space model of the vibration system were identified by the multivariable frequency-domain identification theory and the ERA)eigen realization algorithm) method. On the basis of two models, the canonical uncertainty block diagonal matrix extraction method of modal parameter perturbation was designed by 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 μ - 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 additive masses indicate,comparing with the open-loop system, the attenuation time of initial disturbance is shortened 40s, the noise caused by random disturbance is reduced nearly 4dB.关键词
柔性结构/振动主动控制/鲁棒控制/μ综合Key words
flexible structure/active vibration control/robust control/μ-synthesis分类
机械制造引用本文复制引用
李冬伟..柔性板μ综合振动主动控制设计与实验研究[J].中国机械工程,2009,20(20):2414-2420,7.基金项目
教育部跨世纪优秀人才培养计划资助项目 （）
