Details

Autor(en) / Beteiligte

• Wang, Wen
• Wang, Ruijin
• Chen, Zhanfeng
• Sang, Zhiqian
• Lu, Keqing
• Han, Fuming
• Wang, Jian
• Ju, Bingfeng

Titel

A new hysteresis modeling and optimization for piezoelectric actuators based on asymmetric Prandtl-Ishlinskii model

Ist Teil von

• Sensors and actuators. A. Physical., 2020-12, Vol.316, p.112431, Article 112431

Ort / Verlag

Lausanne: Elsevier B.V

Erscheinungsjahr

2020

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• [Display omitted] •An asymmetric Prandtl-Ishlinskii model is presented to describe asymmetric hysteresis of piezoelectric actuators.•The accuracy of the asymmetric Prandtl-Ishlinskii model is verified by experiment.•Compared with existing models, our model has a significant advantage in precision. Piezoelectric actuators are core components in micromanipulation systems in the field of biomedicine. The asymmetrical hysteresis of piezoelectric actuators greatly affects its performance, and the existing asymmetric hysteresis models are either inaccurate or complicated. In this paper, an accurate and simple asymmetric hysteresis model is proposed based on the Prandtl-Ishlinskii (PI) model. Firstly, the Play operator is modified to be asymmetric to enhance its flexibility, and the influence of parameters on the operator is analyzed. Secondly, the Asymmetric Prandtl-Ishlinskii (API) model is proposed based on the asymmetric Play operator and verified by experiment. Compared with several existing models, the API model can describe the asymmetric hysteresis in a more accurate and simple manner under the same conditions. Thirdly, the parameters of the API model are optimized. Compared with the unoptimized API model, the optimized one can reduce the number of parameters and maintain high accuracy. Furthermore, the influence of the order on accuracy is discussed, and a guidance for selection of the order is provided. Last but not least, the optimized API model is used to compensate for the hysteresis. The experimental results show that the compensator based on this model can effectively suppress the hysteresis of the piezoelectric actuator.