压电叠堆执行器迟滞非线性建模与分析
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国家自然科学基金资助项目(51575258);南京航空航天大学研究生创新基地(实验室)开放基金资助项目(ykfjj20150512)

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Modeling and Analysis on Hysteresis Nonlinear Characteristics of the Piezoelectric Stack Actuators
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    摘要:

    压电叠堆执行器输出位移具有迟滞非线性特性,在高精度控制和电静液作动器等应用领域,为实现进一步研究和控制,需要针对该特性进行建模。该文首先针对压电叠堆执行器的静态特性,采用改进的非对称BoucWen模型建立压电叠堆执行器的准静态模型;其次,为描述其动态位移输出特性,将执行器输出力分为线性模块和滞后模块,根据系统动力学方程建立压电叠堆执行器迟滞非线性动态模型,进行参数辨识、模型仿真与实验研究。结果表明,在400 Hz频率范围内,所建立的模型能够准确描述与预测压电叠堆执行器输出位移的迟滞非线性。

    Abstract:

    The output displacement of the piezoelectric stack actuator(PSA) exhibits hysteresis nonlinear characteristics.To achieve further research and control,a modeling of the reliable hysteresis nonlinearity is essential,especially in the fields of precision control and electrohydraulic actuator and etc. Firstly, a quasistatic model is established by using the modified asymmetric BoucWen model according to the static characteristic of PSA in this paper.Then,the output force is divided into the linear portion and the lag portion to descript the dynamic displacement output features,and a hysteresis nonlinear dynamic model of the PSA is established according to the system kinetic equation. Finally,the parameter identification,model simulation and experimental study have been carried out.The results show that the model can accurately descript and predict the dynamic characteristics of the PSA at the frequency range of 400 Hz.

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郭亚子, 朱玉川.压电叠堆执行器迟滞非线性建模与分析[J].压电与声光,2017,39(4):520-524. GUO Yazi, ZHU Yuchuan. Modeling and Analysis on Hysteresis Nonlinear Characteristics of the Piezoelectric Stack Actuators[J]. PIEZOELECTRICS AND ACOUSTOOPTICS

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  • 在线发布日期: 2017-08-14
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