A lumped parameter electromechanical model for describing the nonlinear behavior of piezoelectric actuators
A lumped parameter electromechanical model for describing the nonlinear behavior of piezoelectric actuators
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DOI：
10.1115/1.2801282
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发表时间：
1997-09-01
影响因子：
1.7
通讯作者：
Celanovic, N
中科院分区：
文献类型：
--
作者：
Goldfarb, M;Celanovic, N
为了控制系统分析和设计的目的，特别是需要精确位置跟踪性能的控制应用，开发了压电堆致动器的集总参数模型来描述致动器的行为。除了描述输入输出动态行为外，所提出的模型还解释了压电致动器所表现出的非直觉行为现象，如输入输出速率无关的滞后和由改变电负载引起的机械刚度变化。结合键图术语以方便执行器模型的基于能量的表述。作者提出了一种新的键图单元——广义麦克斯韦电阻电容，作为速率无关迟滞的集总参数因果表示。通过数值模拟结果与实验数据的对比，验证了模型的正确性。
A lumped-parameter model of a piezoelectric stack actuator has been developed to describe actuator behavior for purposes of control system analysis and design, and in particular for control applications requiring accurate position tracking performance. lit addition to describing the input-output dynamic behavior, the proposed model explains aspects of nonintuitive behavioral phenomena evinced by piezoelectric actuators, such as the input-output rate-independent hysteresis and the change in mechanical stiffness that results from altering electrical load. Bond graph terminology is incorporated to facilitate the energy-based formulation of the actuator model. The authors propose a new bond graph element, the generalized Maxwell resistive capacitor as a lumped-parameter causal representation of rate-independent hysteresis. Model formulation is validated by comparing results of numerical simulations to experimental data.