智能结构的压电片位置优化及主动控制研究  

Studies on the Active Control and Placement of Piezoelectric in Piezoelectric Structure

作　　者：王军[1] 苏洪波[1,2] 杨亚东[1] 

机构地区：[1]北京航空航天大学航空科学与工程学院,北京100191 [2]海军航空工程学院青岛校区航空机械系,山东青岛266041

出　　处：《控制工程》2013年第3期529-532,共4页Control Engineering of China

基　　金：唯实青年教师基金(YWF-10-02-014)

摘　　要：采用压电陶瓷作为作动器,对柔性结构的作动器位置进行了优化设计并对其进行了振动主动控制研究。首先分析了压电结构振动主动控制的原理和方法;采用基于作动器的模态影响矩阵对压电片进行了优化布置,使压电片配置在控制效能最优的位置。在存在噪声和干扰的情况下对智能结构进行控制,采用LQG/LTR和H_∞方法对结构进行控制,并对二者的控制效果作了比较。结果显示在加入噪声和干扰后,进行适当的处理,采用LQG/LTR和H_∞方法都能达到很好的控制效果,只是鲁棒性有差别。The active vibration control of the flexible cantilever beam with PZT actuators was studied in this paper, the placement of the actuators of the flexible structures were optimized and the active control of the active vibration control were researched. First, the principle and the method of the active vibration control were analyzed; the optimization arrangement of the piezoelectric actuators was studied basing on the modal influential matrix of the piezoelectric actuators in order to make it to maximize its effectiveness to realize active control; Next step the LQG/LTR and H∞ methods were used to control the structure with the existence of disturbances and noise, and the two methods were comparedo The results show that the LQG/LTR and H∞ methods to control the vibration will realize effective control if only the treatment is adequate, when the acoustic noise and Interference were added to the structure, only the robust is different between two methods.

关 键 词：智能结构 振动控制 压电作动器 位置优化 控制方法 

分 类 号：TP27[自动化与计算机技术—检测技术与自动化装置]