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分布参数结构控制中溢出抑制的并行滤波法 被引量:4

Parallel filtering control to prevent the spillover for distributed structures
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摘要 提出了并行滤波控制方法抑制分布参数结构主动控制中的溢出。对无穷维分布参数结构,依据有限维降阶模型设计控制器会导致系统闭环性能变差,并有可能使系统失稳。文中针对分布参数结构特性设计了滤波增广结构,对增广系统设计带观测器的状态反馈构成控制器。在给出该方法原理的基础上,提出了并行滤波控制针对被控结构摄动的鲁棒稳定界。仿真算例表明,此方法在保证受控模态控制效果的同时有效地抑制了溢出。 In this paper, the parallel filtering control approach to suppress spillover is presented. For distributed structures, the closed loop performance of the control system might be badly reduced without considering the spillover, and is likely to become unstable. The Parallel Filtering Control is brought forward in this paper: A filter designed for the structure is used to augment the system, based on which the observer is built for state feedback. The principle and implementation are discussed in detail. The robust stability margin of the approach is also presented. The validation is shown in simulations on a 2-D flexible plate. It is demonstrated that the vibration of controlled modes is effectively depressed and meanwhile the spillover is suppressed satisfactorily.
出处 《振动工程学报》 EI CSCD 北大核心 2005年第4期524-529,共6页 Journal of Vibration Engineering
基金 安徽省自然科学基金资助(03042303)
关键词 振动控制 分布参数结构 溢出 并行滤波 鲁棒稳定 vibration control distributed structures spillover parallel filtering robust stability
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参考文献12

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