一种用于压电驱动的基于挠曲系统非对称滞后建模与补偿的改进型普朗特-伊什林斯基滞后模型
A Modified Prandtl-Ishlinskii Hysteresis Model for Modeling and Compensating Asymmetric Hysteresis of Piezo-Actuated Flexure-Based Systems.
作者信息
Zhou Chao, Yuan Meng, Feng Chen, Ang Wei Tech
机构信息
School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore.
出版信息
Sensors (Basel). 2022 Nov 13;22(22):8763. doi: 10.3390/s22228763.
Piezo-actuated flexure-based systems are widely used in applications with high accuracy requirements, but the intrinsic hysteresis has a detrimental effect on the performance which should be compensated. Conventional models were presented to model this undesired effect using additional dead-zone operators. This paper presents a new approach using two sets of operators with a distributed compensator to model and compensate for the asymmetric system hysteresis based on inversion calculation with a simplified digitized representation. The experimental results validate the effectiveness of the proposed model in modeling and compensating the asymmetric system hysteresis.
基于压电驱动挠曲的系统广泛应用于对精度要求较高的场合，但固有滞后对性能有不利影响，需要进行补偿。传统模型通过额外的死区算子来对这种不良影响进行建模。本文提出了一种新方法，使用两组算子和一个分布式补偿器，基于简化数字化表示的反演计算，对非对称系统滞后进行建模和补偿。实验结果验证了所提模型在建模和补偿非对称系统滞后方面的有效性。
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