压电柔性结构形状复合控制方法研究  

Research on Shape Compound Control Method of Piezoelectric Flexible Structure

作　　者：张宗宇 周文雅[1] 吕维梁 王晓明 马瑞鑫 ZHANG Zongyu;ZHOU Wenya;LYU Weiliang;WANG Xiaoming;MA Ruixin(School of Aeronautics and Astronautics,Dalian University of Technology, Dalian 116024, China;School of Aeronautics and Astronautics,Sun Yat-Sen University, Guangzhou 510006, China)

机构地区：[1]大连理工大学航空航天学院,辽宁大连116024 [2]中山大学航空航天学院,广东广州510006

出　　处：《压电与声光》2020年第4期550-556,共7页Piezoelectrics & Acoustooptics

基　　金：装备预研领域基金资助项目(61402060203)。

摘　　要：以宏纤维复合材料(MFC)驱动柔性悬臂结构为研究对象,着重开展其动态形状控制理论研究。基于有限单元法、均匀化理论和载荷比拟方法,建立了压电驱动层合结构力-电耦合动力学方程,并结合模态降阶法得到其状态空间形式控制模型。同时,针对压电材料作动器迟滞蠕变非线性特征对控制精度影响严重的问题,开展了依据实验数据的迟滞蠕变建模及其前馈逆补偿控制方法的研究,并构建了面向压电驱动柔性结构动态形状控制的迟滞-蠕变前馈补偿与自抗扰反馈控制相结合的复合控制系统。结果表明,该复合控制法能够在保证系统稳定性的前提下有效提高系统动态形状控制精度。This paper focuses on the dynamic shape control theory of the flexible cantilever structure driven by the macro fiber composite actuator(MFC).Based on the finite element method,homogenization theory and load analogy method,the mechanical-electrical coupling dynamic equation of the piezoelectric driven laminated structure is established,and the state space control model is obtained by combining the modal reduction method.At the same time,in view of the serious influence of the nonlinear characteristics of the hysteresis creep of the piezoelectric actuators on the control accuracy,the research on the hysteresis-creep modeling and the feedforward inverse compensation control method based on the experimental data was carried out.Furthermore,the composite control system of the hysteresis-creep feedforward compensation and the active disturbance rejection feedback control for the dynamic shape control of the piezoelectric driven flexible structure is constructed.The calculated example shows that the composite control method can effectively improve the accuracy of dynamic shape control of the system on the premise of ensuring the stability of the system.

关 键 词：形状控制 宏纤维复合材料 自抗扰控制 迟滞蠕变非线性 前馈补偿 

分 类 号：TN384[电子电信—物理电子学] TM22[一般工业技术—材料科学与工程]