摘要
为了准确描述压电陶瓷驱动器中存在的复杂非线性滞回动力学特性,采用分层建模原理,建立了驱动器中底层压电叠堆的非线性滞回子模型。将该底层子模型与驱动器中上层弹性和运动部件的子模型进行集成,导出了一种具有仿射形式的新型机电耦合非线性集总参数ECNLP模型。通过时域的仿真与实验对比验证和频域的动力学分析表明,该模型不仅能够准确、合理的刻画压电叠堆中的非线性滞回动、静态特性,而且充分考虑了驱动器中弹性和运动部件的动力学特性,为以后压电陶瓷驱动器控制系统的设计提供了一种新的建模方法。
To describe the complex nonlinear hysteresis behavior of piezoceramic actuator precisely, a hierarchy modeling theory is used to create the model of piezoceramic actuator. First, a lower layer nonlinear hysteresis sub-model was created for the actuator. After that, the lower layer sub-model could be integrated into a high-layer sub-model, which described the dynamics of elastic and motive components with in the actuator. Then, a novel ECNLP（ Electromechanical Coupling Nonlinear Lumped-Parameter） model provided with affine form was p a time-domain simulation in comparison with experiment and a frequency-domain analysis were conducted. The results illustrate that not only the static and dynamic＇characteristics of piezoceramic stack＇ s nonlinear hysperesis, but also the dynamics of elastic and motive components within the actuator are considered simultaneously. A new modeling method is proposed for the designing of piezoceramic actuator control system.
出处
《电机与控制学报》
EI
CSCD
北大核心
2008年第2期179-183,189,共6页
Electric Machines and Control
基金
国家“863”高科技资助(2006AA04Z253)
国家自然科学基金(50575119)
中国博士后科学基金(20070410513)
关键词
压电驱动
机电耦合
非线性滞回特性
动力学建模
Piezo-actuated
electromechanical coupling
nonlinear hysteresis behavior
dynamic model-ing
