scholarly journals Design and Analysis of a Stepping Piezoelectric Actuator Free of Backward Motion

Actuators ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 200
Author(s):  
Xiaofeng Yang ◽  
Jinyan Tang ◽  
Wenxin Guo ◽  
Hu Huang ◽  
Haoyin Fan ◽  
...  
Keyword(s):  
Piezoelectric Actuator ◽  
Matrix Method ◽  
Piezoelectric Actuators ◽  
Flexure Hinge ◽  
Compliance Matrix ◽  
Stick Slip ◽  
New Strategy ◽  
Piezoelectric Stacks ◽  
Compliance Matrix Method ◽  
Phase Differences

Although the stick-slip principle has been widely employed for designing piezoelectric actuators, there still exits an intrinsic drawback, i.e., the backward motion, which significantly affects its output performances and applications. By analyzing the generation mechanism of backward motion in stick-slip piezoelectric actuators, the elliptical trajectory was employed to design a novel stepping piezoelectric actuator free of backward motion. Accordingly, a prototype of piezoelectric actuator was designed, which utilized a flexure hinge mechanism and two vertically arranged piezoelectric stacks to generate the required elliptical trajectory. The compliance matrix method was used to theoretically analyze the flexure hinge mechanism. The theoretical and measured elliptical trajectories under various phase differences were compared, and the phase difference of 45° was selected accordingly. Under a critical relative gap, output performances of the actuator working under the elliptical trajectory were characterized, and then compared with that obtained under the normal stick-slip driving principle. Experimental results indicated that forward and reverse stepping displacement with completely suppressed backward motion could be achieved when employing the elliptical trajectory, verifying its feasibility. This study provides a new strategy for designing a stepping piezoelectric actuator free of backward motion.

Novel Precision PZT-Driven Micropositioning Stage with Large Travel Range

2009 ◽  
Vol 407-408 ◽  
pp. 159-162
Author(s):  
Hua Wei Chen ◽  
Ichiro Hagiwara
Keyword(s):  
Dynamic Model ◽  
Piezoelectric Actuator ◽  
Dynamic Properties ◽  
Flexure Hinge ◽  
Slip Model ◽  
Stick Slip ◽  
Friction Effect ◽  
Simulation Results

One novel long-travel piezoelectric-driven linear micropositioning stage capable of moving in a stepping mode is developed. The stick-slip friction effect between flexure hinge actuation tips with a sliding stage is used to drive the stage step-by-step through an enlarged displacement of piezoelectric actuator. In order to enlarge the travel range, magnifying mechanism is optimally designed by use of flexure hinge and lever beam. Moreover, dynamic model of such stage is proposed by consideration of reset integrator stick-slip model. The simulation results show that the stage has considerable good dynamic properties.

scholarly journals A Novel Stick-Slip Type Rotary Piezoelectric Actuator

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Yuan Wang ◽  
Minglong Xu ◽  
Shubao Shao ◽  
Siyang Song ◽  
Yan Shao
Keyword(s):  
Piezoelectric Actuator ◽  
Experimental System ◽  
Driving Voltage ◽  
Stick Slip ◽  
Piezoelectric Stacks ◽  
Long Stroke ◽  
Fine Resolution ◽  
Stick Slip Motion ◽  
Slip Motion ◽  
Sawtooth Waveform

A novel stick-slip rotary piezoelectric actuator is designed for optical use. The actuator is proposed, fabricated, and tested with the aim of realizing both fine resolution and a long stroke. The dynamic model of the actuator is established, and simulations are performed to discover how the input driving voltage affects the stick-slip motion of the actuator. An experimental system is built to evaluate the performance of the actuator at different frequencies, voltages, and numbers of driving piezoelectric stacks. Experimental results show that the minimal output stepping angle is 3.5 μrad (0.2 millidegrees) under a sawtooth waveform having a voltage of 13 V and frequency of 3000 Hz and that the velocity reaches 0.44 rad/s (25°/s) under a sawtooth waveform having a voltage of 93 V and frequency of 3000 Hz, while the stroke is infinite. The proposed actuator provides stable and accurate rotary motion and realizes a high velocity.

The design and kinetostatic modeling of 3PPR planar compliant parallel mechanism based on compliance matrix method

2019 ◽  
Vol 90 (4) ◽  
pp. 045102 ◽  
Author(s):  
Hongtao Yu ◽  
Chi Zhang ◽  
Bao Yang ◽  
Si-Lu Chen ◽  
Zaojun Fang ◽  
...  
Keyword(s):  
Matrix Method ◽  
Parallel Mechanism ◽  
Compliance Matrix ◽  
Compliant Parallel Mechanism ◽  
Compliance Matrix Method

Simple and high-performance stick-slip piezoelectric actuator based on an asymmetrical flexure hinge driving mechanism

2019 ◽  
Vol 30 (14) ◽  
pp. 2125-2134 ◽  
Author(s):  
Qi Gao ◽  
Meng He ◽  
Xiaohui Lu ◽  
Chi Zhang ◽  
Tinghai Cheng
Keyword(s):  
Piezoelectric Actuator ◽  
High Performance ◽  
Maximum Velocity ◽  
Maximum Load ◽  
Maximum Efficiency ◽  
Flexure Hinge ◽  
Tangential Displacement ◽  
Driving Mechanism ◽  
Stick Slip ◽  
New Type

This article presented a new type of stick-slip piezoelectric actuator based on an asymmetrical flexure hinge driving mechanism. The key of the driving mechanism was a four-bar mechanism with different minimum thicknesses of right-circle flexure hinges. Combined with a symmetrical indenter, the asymmetrical flexure hinge driving mechanism generated controllable tangential displacement by changing the locking force. Therefore, the simple structured stick-slip piezoelectric actuator achieved considerable improvements especially in output speed and efficiency. In order to obtain improved actuator properties, the minimum thicknesses of asymmetrical flexure hinge driving mechanism, the tangential and normal displacements of the indenter were analyzed and investigated by finite element method. A prototype was fabricated and experiment investigation of the actuator characteristics was presented. Testing results indicated that the actuator achieved the maximum velocity of 15.04 mm/s and its maximum load reached 440 g under a voltage of 100 Vp-p and a frequency of 490 Hz. The maximum efficiency of the actuator was 3.66% with a load of 280 g under a locking force of 5 N and the actuated velocity of 10.17 mm/s.

Stiffness analysis of corrugated flexure beam using stiffness matrix method

2018 ◽  
Vol 233 (5) ◽  
pp. 1818-1827 ◽  
Author(s):  
Nianfeng Wang ◽  
Zhiyuan Zhang ◽  
Xianmin Zhang
Keyword(s):  
Stiffness Matrix ◽  
Matrix Method ◽  
Beam Theory ◽  
Analytical Models ◽  
The Finite Element Method ◽  
Compliance Matrix ◽  
Stiffness Analysis ◽  
Compliance Matrix Method ◽  
Euler Bernoulli Beam ◽  
The Relationship

Precision positioning techniques present a significant opportunity to support the instrumentation development for state-of-the-art micro-positioning research. The requirement of large stroke and high resolution of the mechanism without a need for amplifier mechanisms is universally recognized. Corrugated flexure beam can have some potential if designed right because of its large flexibility obtained from longer overall length on the same span. This paper presents stiffness analysis of corrugated flexure beam using stiffness or compliance matrix method. Based on Euler–Bernoulli beam theory and Mohr’s integral method, the deformation analyses of straight segment and semi-circle segment are presented. And the stiffness matrix of corrugated flexure unit is then obtained via transformation matrix. By combining the stiffness matrix of every single corrugated flexure unit, the stiffness matrix of corrugated flexure beam is delivered, which reflects the relationship between the load and displacement. The analytical models are verified by taking advantage of the finite element method, which shows that all the results can be of considerable use in the design of corrugated flexure beam.

scholarly journals A Novel Rotation-Structure Based Stick-Slip Piezoelectric Actuator with High Consistency in Forward and Reverse Motions

Actuators ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 189
Author(s):  
Jizhou Tang ◽  
Jingsong Wei ◽  
Yuming Wang ◽  
Zhi Xu ◽  
Hu Huang
Keyword(s):  
Piezoelectric Actuator ◽  
Piezoelectric Actuators ◽  
Driving Voltage ◽  
Driving Frequency ◽  
Maximum Displacement ◽  
Stick Slip ◽  
Reverse Motion ◽  
Symmetric Structure ◽  
Deviation Rate ◽  
High Consistency

Under the same driving voltage and frequency, the forward and reverse motion inconsistency of stick-slip piezoelectric actuators would bring difficulty for subsequent control. To solve this problem, a rotation-structure based piezoelectric actuator with completely symmetric structure and two driving feet was initially proposed. By testing its output performances under various driving voltages and frequencies, it was confirmed that, although similar speeds could be achieved for forward and reverse motions, the maximum displacement and backward displacement in each step were still quite different. By analyzing the reasons leading to this difference, this actuator was further improved by using only one driving foot. The experimental results showed that the forward and reverse motion consistency of the improved actuator had been significantly improved. The deviation rate was only 1.6%, corresponding to a travel distance of 118.7 μm, obtained under the driving voltage of 100 V and driving frequency of 10 Hz. The comparison with some previously reported actuators further confirmed the advancement of this improved actuator.

scholarly journals Design and Locomotion Study of Stick-Slip Piezoelectric Actuator Using Two-Stage Flexible Hinge Structure

Micromachines ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 154
Author(s):  
Zheng Li ◽  
Zhirong Su ◽  
Liang Zhao ◽  
Haitao Han ◽  
Zhanyu Guo ◽  
...  
Keyword(s):  
Piezoelectric Actuator ◽  
Load Capacity ◽  
Flexure Hinge ◽  
Maximum Speed ◽  
Clamping Force ◽  
Two Stage ◽  
Stick Slip ◽  
The Stability ◽  
Horizontal Thrust ◽  
Electromechanical Field

A novel piezoelectric actuator using a two-stage flexure hinge structure is proposed in this paper, which is used in a compact and high-precision electromechanical field. The two-stage flexure hinge structure is used to provide horizontal thrust and vertical clamping force to the driving feet, which solves the problems of unstable clamping force and insufficient load capacity in traditional stick-slip piezoelectric actuators. Firstly, the main structure of the driver and the working process under the triangular wave excitation voltage are briefly introduced. Secondly, after many simulation tests, the structure of the actuator is optimized and the stability of the structure in providing clamping force is verified. Finally, through the research of the operating performance, when the amplitude is 150 V and the frequency is 3.25 kHz as the excitation source, the maximum speed can reach 338 mm/s and can bear about 3 kg load. It can be seen from the analysis that the two-stage flexure hinge structure can improve the displacement trajectory.

Design, modeling, and performance of a bidirectional stick-slip piezoelectric actuator with coupled asymmetrical flexure hinge mechanisms

2020 ◽  
Vol 31 (17) ◽  
pp. 1961-1972
Author(s):  
Xiaohui Lu ◽  
Qiang Gao ◽  
Qi Gao ◽  
Yang Yu ◽  
Xiaosong Zhang ◽  
...  
Keyword(s):  
Piezoelectric Actuator ◽  
Load Capacity ◽  
Maximum Load ◽  
Maximum Efficiency ◽  
Flexure Hinge ◽  
Tangential Displacement ◽  
Maximum Output ◽  
Stick Slip ◽  
Force Variation ◽  
And Performance

A stick-slip piezoelectric actuator with bidirectional motion is proposed and measured, which uses coupled asymmetrical flexure hinge mechanisms and symmetrical indenter to generate controllable tangential displacement. The operating principle of the proposed stick-slip actuator is illustrated, and the normal force variation between the stator and slider is analyzed. A dynamic model based on the method of dimensionality reduction is established to simulate the displacement and load capacity. In order to obtain improved actuator properties, the design rules of the coupled flexure hinge mechanisms are discussed, and the tangential and normal displacements of the indenter are investigated by the finite element method. A prototype is fabricated, and the experiment investigation of the actuator characteristics is presented. Testing results indicate that the actuator achieves the maximum output velocity of 10.14 mm/s and its maximum load reaches 1.5 N under a voltage of 100 Vp–p and a frequency of 850 Hz in the positive x-direction. The maximum efficiency of the actuator is 0.57% with a load of 90 g, a locking force of 5 N, and the actuated velocity of 5.48 mm/s. In addition, experimental results confirm the feasibility of the presented model by comparing numerical simulation results.

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