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Fuzzy PID Feedback Control of Piezoelectric Actuator with Feedforward Compensation

机译：具有前馈补偿的压电执行器的模糊PID反馈控制

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摘要

Piezoelectric actuator is widely used in the field of microanopositioning. However, piezoelectric hysteresis introduces nonlinearity to the system, which is the major obstacle to achieve a precise positioning. In this paper, the Preisach model is employed to describe the hysteresis characteristic of piezoelectric actuator and an inverse Preisach model is developed to construct a feedforward controller. Considering that the analytical expression of inverse Preisach model is difficult to derive and not suitable for practical application, a digital inverse model is established based on the input and output data of a piezoelectric actuator. Moreover, to mitigate the compensation error of the feedforward control, a feedback control scheme is implemented using different types of control algorithms in terms of PID control, fuzzy control, and fuzzy PID control. Extensive simulation studies are carried out using the three kinds of control systems. Comparative investigation reveals that the fuzzy PID control system with feedforward compensation is capable of providing quicker response and better control accuracy than the other two ones. It provides a promising way of precision control for piezoelectric actuator.
机译：压电致动器广泛用于微/纳米定位领域。然而，压电迟滞将非线性引入系统，这是实现精确定位的主要障碍。本文采用Preisach模型描述压电致动器的磁滞特性，并开发了反Preisach模型来构建前馈控制器。考虑到反Preisach模型的解析表达式难以推导且不适合实际应用，基于压电致动器的输入和输出数据建立了数字反模型。此外，为了减轻前馈控制的补偿误差，在PID控制，模糊控制和模糊PID控制方面使用不同类型的控制算法来实现反馈控制方案。使用这三种控制系统进行了广泛的仿真研究。对比研究表明，具有前馈补偿的模糊PID控制系统比其他两个具有更快的响应和更好的控制精度。它为压电致动器的精密控制提供了一种有希望的方法。

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  • 来源
    《Mathematical Problems in Engineering》 |2014年第21期|107184.1-107184.14|共14页
  • 作者

    Chi Ziqiang; Jia Minping; Xu Qingsong;

  • 作者单位

    Univ Macau, Fac Sci & Technol, Dept Electromech Engn, Taipa, Macau, Peoples R China.;

    Southeast Univ, Sch Mech Engn, Nanjing 211189, Jiangsu, Peoples R China.;

    Univ Macau, Fac Sci & Technol, Dept Electromech Engn, Taipa, Macau, Peoples R China.;

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