Memory characteristics of hysteresis and creep in multi-layer piezoelectric actuators: An experimental analysis

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• 作者：Matteo Biggio ; Mark Butcher ; Aless ; ro Giustiniani ; Aless ; ro Masi ; Marco Storace
• 关键词：Piezoelectric actuators ; Piezoelectric hysteresis ; Creep ; Preisach model
• 刊名：Physica B
• 出版年：15 February, 2014
• 年：2014
• 卷：435
• 期：Complete
• 页码：40-43
• 全文大小：702 K

文摘

In this paper we provide an experimental characterization of creep and hysteresis in a multi-layer piezoelectric actuator (PEA), taking into account their relationships in terms of memory structure. We fit the well-known log-t model to the response of the PEA when driven by piecewise-constant signals, and find that both the instantaneous and the delayed response of the PEA display hysteretic dependence on the voltage level. We investigate experimentally the dependence of the creep coefficient on the input history, by driving the PEA along first-order reversal curves and congruent minor loops, and find that it displays peculiar features like strict congruence of the minor loops and discontinuities. We finally explain the observed experimental behaviors in terms of a slow relaxation of the staircase interface line in the Preisach plane.