A piezo driver for piezoelectric bimorph actuators in micro-positioning application

2020 ◽  
Vol 64 (1-4) ◽  
pp. 615-620
Author(s):  
Yuansheng Chen ◽  
Pengcheng Zhao ◽  
Hao Wang ◽  
Jinhao Qiu ◽  
Guowen Yang
Keyword(s):  
Piezoelectric Bimorph ◽  
Frequency Range ◽  
Positioning Systems ◽  
Rate Dependent ◽  
Hysteresis Nonlinearity ◽  
Bimorph Actuators

Piezo driver for piezoelectric bimorph actuators is the key component for micro-positioning application. Hysteresis nonlinearity of piezoelectric bimorph actuators limits the performance of micro-positioning systems. A novel piezo driver was developed with Prandtl-Ishlinskii (P-I) model and correction network. The combination of P-I model and correction network can describe the rate-dependent hysteresis. Experiments were performed to validate the proposed piezo driver. The results show that the piezo driver can compensate the hysteresis of the piezoelectric bimorph actuator in the frequency range of 0.1 Hz to 10 Hz, and the accuracy of micro-positioning have been greatly improved.

Model Development for PZT Bimorph Actuation Employed for Micro-Air Vehicles

2016 ◽  
Author(s):  
John Crews ◽  
Nikolas Bravo ◽  
Ralph Smith
Keyword(s):  
Model Development ◽  
Micro Air Vehicles ◽  
Energy Model ◽  
Comprehensive Model ◽  
Actuator Dynamics ◽  
Rate Dependent ◽  
Dependent Behavior ◽  
Bimorph Actuators ◽  
Homogenized Energy Model ◽  
Air Vehicles

In the paper, we discuss the development of a model for PZT bimorph actuators used to power micro-air vehicles including Robobee. Due to highly dynamic drive regimes required for the actuators, models must quantify the nonlinear, hysteretic, and rate-dependent behavior inherent to PZT in these regimes. We employ the homogenized energy model (HEM) framework to model the actuator dynamics and numerically we illustrate the capability of the model to characterize the inherent hysteresis. This provides a comprehensive model, which can be inverted and implemented for certain control regimes.

Electromechanical Characteristics of Exponentially Tapered Piezoelectric Bimorph Actuators

2010 ◽  
Vol 49 (7) ◽  
pp. 07HD08 ◽  
Author(s):  
Jungsoon Kim ◽  
Moojoon Kim ◽  
Huiuk Lee ◽  
Kanglyel Ha
Keyword(s):  
Piezoelectric Bimorph ◽  
Bimorph Actuators

Modeling Rate-Dependent Hysteresis for GMA Using Online Least Squares Support Vector Machines

2011 ◽  
Vol 48-49 ◽  
pp. 710-714
Author(s):  
Zhen Kai Guo ◽  
Zhao Qing Song ◽  
Xin Jiang Wei
Keyword(s):  
Support Vector Machines ◽  
Least Squares ◽  
Active Vibration Control ◽  
Support Vector ◽  
Nonlinear Phenomenon ◽  
Rate Dependent ◽  
Hysteresis Nonlinearity ◽  
Vector Machines ◽  
Active Vibration ◽  
And Control

Rate-dependent hysteresis is a strongly nonlinear phenomenon which exists in the giant magnetostrictive actuator (GMA); it has influence in the precision and stability of active vibration control. It is highly important in the control theory and control engineering that the influence of hysteresis is eliminated by the modeling of rate-dependent hysteresis for GMA. So an online intelligent modeling method, which is based on an improved online least squares support vector machines (IOLS-SVM), is presented for identifying rate-dependent hysteresis nonlinearity for GMA, and is used to online real-time training. The data measured in the experiment are used for modeling. The numerical simulation shows the effectiveness of the method.

Design of an Innovative Piezoelectric Jacquard Selection Mechanism

2013 ◽  
Vol 459 ◽  
pp. 402-406
Author(s):  
Fu Jun Liu ◽  
Yan Hong Yuan
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Driving Force ◽  
Operating Frequency ◽  
Low Power Consumption ◽  
Small Displacement ◽  
Selection Mechanism ◽  
Piezoelectric Bimorph ◽  
Bimorph Actuators ◽  
Auxiliary Mechanism

Piezoelectric bimorph has the advantages of small size, low power consumption and high operating frequency. Meanwhile, it has the short-comings of small displacement of deformation and weak driving force applying to the load. Piezoelectric bimorph actuators can replace the previous electromagnetic needle selector successfully by means of displacement magnifying mechanism and other auxiliary mechanism. An innovative piezoelectric jacquard selection mechanism has been designed in the paper.

Adaptive Identification and Control of Hysteresis in Piezoelectric Actuators

2014 ◽  
Vol 625 ◽  
pp. 129-133
Author(s):  
Xue Song Chen ◽  
Xin Chen ◽  
Xin Du Chen ◽  
Ming Sheng Yang
Keyword(s):  
Fuzzy Control ◽  
Control Algorithm ◽  
Control Method ◽  
Hysteresis Effect ◽  
Hammerstein Model ◽  
Small Displacement ◽  
Precision Positioning ◽  
Positioning Systems ◽  
Hysteresis Nonlinearity ◽  
Fuzzy Control Algorithm

Smart actuators, such as piezoceramic actuators, magnetostrictive actuators, and shape memory alloy actuators are widely used in applications of micrositioning and vibration control. Piezoelectric (PZT) actuators having the characteristic of infinitely small displacement resolution are popularly applied as actuators in precision positioning systems. However, the tracking control accuracy of the precision positioning systems is difficultly achieved because of its nonlinear hysteresis effect. Hence, it is important to take hysteresis effect into consideration for improving the trajectory tracking performance. In this paper, in order to capture the hysteresis nonlinearity in the PZT actuators, the Hammerstein model is put to use. The fuzzy control algorithm is used to identify the weighing values. The adaptive inverse controller based on adaptive fuzzy inference is used to track the PZT actuator. We firstly identify the weighting values of the Hammerstein model in situ using the multi-mode fuzzy control algorithm based on the error between reference displacement and actual displacement of the actuator, and then calculate the weighting values and threshold values of the Hammerstein model. Finally, we obtain the feed-forward input voltage. The stability of the controller in the presence of the estimated state is demonstrated. The experimental results show the performance is effectively improved under the intelligent control method.

scholarly journals Эффекты амплитудно-зависимого внутреннего трения в низкочастотном стержневом резонаторе из отожженной поликристаллической меди

2021 ◽  
Vol 91 (9) ◽  
pp. 1305
Author(s):  
В.Е. Назаров ◽  
А.Б. Колпаков
Keyword(s):  
Low Frequency ◽  
Analytical Description ◽  
Copper Sample ◽  
Frequency Range ◽  
Effective Parameters ◽  
Resonant Frequencies ◽  
Longitudinal Modes ◽  
Hysteresis Nonlinearity ◽  
Annealed Copper ◽  
Experimental And Theoretical Studies

Experimental and theoretical studies of the effects of amplitude-dependent internal friction in a low-frequency rod resonator made of annealed polycrystalline copper are carried out. The results of measurements of nonlinear losses and the shift of resonant frequencies at the first three longitudinal modes of the resonator in the kilohertz frequency range from 2 to 11 kHz are presented. The analytical description of the observed effects is carried out in the framework of the rheological model and the equation of state of a microhomogeneous medium with saturation of hysteresis losses and relaxation of its visco-elastic defects. From the comparison of experimental and analytical results, the values of the effective parameters of the hysteresis nonlinearity of the annealed copper sample and their dependence on the frequency are determined.

scholarly journals Discrete Sliding Mode Control Design for Piezoelectric Actuator

2019 ◽  
Vol 3 (3) ◽  
pp. 492
Author(s):  
Van Huynh-Van ◽  
Phong Tran-Thanh
Keyword(s):  
Piezoelectric Actuator ◽  
Pid Controller ◽  
Sliding Mode ◽  
Sliding Mode Controller ◽  
Piezoelectric Bimorph ◽  
Creative Commons ◽  
Bimorph Actuators ◽  
Perturbation Estimation ◽  
Discrete Sliding Mode Control ◽  
Open Access Article

Piezoelectric bimorph actuators have been employed in several applications. In this paper, the piezoelectric actuator is discretized and its hysteresis function is studied, then a digital sliding mode controller is designed. Furthermore, a perturbation estimation technique is applied and an observer is no longer needed. In addition, simulations are performed also using the traditional PID controller in order to validate the proposed controller scheme performance.This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium provided the original work is properly cited. 

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