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Modeling hysteresis and creep behavior of macrofiber composite-based piezoelectric bimorph actuator

机译:基于宏纤维复合材料的压电双压电晶片执行器的磁滞和蠕变行为建模

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摘要

Macrofiber composite—based bimorph actuators inherit the nonlinear properties of hysteresis and creep of piezoelectric materials, which limit the accuracy in real-time control. Many hysteresis models have been proposed, and generalized Maxwell slip model consisting of a series of nonlinear elements is one of the simplest and most efficient operators to describe symmetrical hysteresis. However, these hysteresis operators do not contain the creep behavior of piezoelectric materials. In this study, a hybrid model including a generalized Maxwell slip operator, a creep operator, and a dynamic model is developed to characterize a macrofiber composite—based piezoelectric bimorph actuator. The generalized Maxwell slip operator is used to describe the hysteresis, the creep operator is used to describe the creep behavior, and a transfer function is used to describe the dynamic model. Each nonlinear element in the creep operator is made up of a diode, a resistance, and a capacitance. The experiment results show that the proposed model can accurately predict the hysteresis, creep, and dynamic behaviors of the macrofiber composite—based piezoelectric bimorph actuator.
机译:基于宏纤维复合材料的双压电晶片执行器继承了压电材料的磁滞和蠕变的非线性特性,这限制了实时控制的准确性。已经提出了许多磁滞模型,由一系列非线性元素组成的广义麦克斯韦滑移模型是描述对称磁滞的最简单,最有效的算子之一。但是,这些滞后算子不包含压电材料的蠕变行为。在这项研究中,开发了一个包含广义Maxwell滑差算子,蠕变算子和动态模型的混合模型,以表征基于宏纤维复合材料的压电双压电晶片执行器。广义Maxwell滑动算子用于描述滞后,蠕变算子用于描述蠕变行为,传递函数用于描述动力学模型。蠕变算子中的每个非线性元件都由一个二极管,一个电阻和一个电容组成。实验结果表明,该模型可以准确预测基于复合材料的压电双压电晶片执行器的磁滞,蠕变和动力学行为。

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