Dynamic Hysteresis Model and Control Methodology for Force Output Using Piezoelectric Actuator Driving

Jian Chen,Jia Ning,Guoxiang Peng,Hong Hu

doi:10.1109/access.2020.3037216

Jian Chen, Jia Ning + Show 2 more

Open Access

https://doi.org/10.1109/access.2020.3037216

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Abstract

In the application of piezoelectric jet dispensing, piezoelectric ceramics and flexure hinges cooperate to form a piezoelectric actuator. The dispensing quality of the piezoelectric jet is closely associated with the output force of the piezoelectric actuator. In this study, a corresponding piezoelectric actuator output force experiment platform is built, and the voltage-force hysteresis curve of the piezoelectric actuator is analyzed. The voltage-force hysteresis curve exhibits memory characteristics and rate dependence. A modeling method for the dynamic hysteresis output force model is proposed, and the numerical method of the model is presented. The corresponding output force model of the piezoelectric actuator is established based on experimental data to predict the output force under different input voltages. According to the dynamic hysteresis model, the feedforward control methodology of the dynamic hysteresis inverse model is proposed, and experimental tests are performed. Experimental results show that the proposed model can express the complex nonlinear characteristics of piezoelectric actuators, and the output force feedforward control method based on the dynamic hysteresis inverse model effectively decreases the nonlinear characteristics of the piezoelectric actuator.

Highlights

P IEZOELECTRIC ceramics exhibit characteristics of rapid response, small size, high working bandwidth, and micro-nano-level positioning accuracy
The piezoelectric ceramic control method generally requires a mathematical model to describe the hysteresis of piezoelectric ceramics and obtain a hysteresis inverse model to complete their feedforward control
J,Chen et al.: Dynamic hysteresis model and control methodology for force output using piezoelectric actuator driving troduced dynamic functions related to voltage and frequency to an input and hysteresis operator, thereby completing a rate-dependent model that can describe the dynamic hysteresis

Summary

INTRODUCTION

P IEZOELECTRIC ceramics exhibit characteristics of rapid response, small size, high working bandwidth, and micro-nano-level positioning accuracy. The piezoelectric ceramic control method generally requires a mathematical model to describe the hysteresis of piezoelectric ceramics and obtain a hysteresis inverse model to complete their feedforward control. J,Chen et al.: Dynamic hysteresis model and control methodology for force output using piezoelectric actuator driving troduced dynamic functions related to voltage and frequency to an input and hysteresis operator, thereby completing a rate-dependent model that can describe the dynamic hysteresis. The voltage-force data of the piezoelectric actuator were obtained experimentally to establish the piezoelectric actuator’s output force model. The pre-tightening force at both ends of the flexible hinge was approximately 200 N

Piezoceramic Force

Complex arbitrary waveform

To further illustrate that the model accuracy of the dynamic

DPM error

Tracking Force

DPM Compensation