scholarly journals Improving Velocity of Stick-Slip Piezoelectric Actuators With Optimized Flexure Hinges Based on SIMP Method

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 213122-213129
Author(s):  
Shitong Yang ◽  
Xiao Xia ◽  
Xia Liu ◽  
Guangda Qiao ◽  
Xiaosong Zhang ◽  
...  
Keyword(s):  
Piezoelectric Actuators ◽  
Stick Slip ◽  
Simp Method ◽  
Flexure Hinges

Design and Analysis of 3-DOF Micromanipulator Driven by Piezoelectric Actuators

2008 ◽  
Author(s):  
Shihua Li ◽  
Yue Zhang ◽  
Zhen Huang ◽  
Changcheng Yu ◽  
Wenhua Ding
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Parallel Mechanism ◽  
Piezoelectric Actuators ◽  
Coefficient Matrix ◽  
Influence Coefficient ◽  
Velocity Analysis ◽  
First Order ◽  
Flexure Hinges ◽  
Moving Platform

A novel 3-DOF parallel micromanipulator which is driven by piezoelectric actuators has been developed that based on 3–5R parallel mechanism. The micromanipulator consists of a moving platform, a fixed platform, three 5R fixed-length chains and three piezoelectric actuators. In this paper, the first-order influence coefficient matrix of the micromanipulator is given, and then the velocity analysis is given. The dimension of the platform and flexure hinges and the position of flexure are designed, and the safety check of the flexible hinges and the designed mechanism is done with the aid of finite element modeling to provide good stiffness with little bending deformation of the platform. The merits of parallel mechanism and piezoelectric actuators are reflected in this mechanism.

A novel cooperative compensation method to compensate for return stroke of stick-slip piezoelectric actuators

2021 ◽  
Vol 159 ◽  
pp. 104254
Author(s):  
Cancheng Qiu ◽  
Jie Ling ◽  
Yangkun Zhang ◽  
Min Ming ◽  
Zhao Feng ◽  
...  
Keyword(s):  
Piezoelectric Actuators ◽  
Compensation Method ◽  
Stick Slip ◽  
Return Stroke

Amplifying Mechanism Vibration Settling by External Impact Damper

2009 ◽  
Vol 3 (3) ◽  
pp. 304-307 ◽  
Author(s):  
Nobuhiko Henmi ◽  
◽  
Michihiko Tanaka
Keyword(s):  
Collision Energy ◽  
Step Response ◽  
Parallel Translation ◽  
Residual Vibration ◽  
Stick Slip ◽  
Impact Damper ◽  
Flexure Hinges ◽  
External Impact ◽  
Solid Friction ◽  
The Impact

Displacement amplifying mechanism for piezoelectric actuators using an elastic guide, such as parallel translation with flexure hinges, to avoid solid-friction-induced stick-slip movement has poor damping. Residual vibration lengthens settling time in quick driving. An impact damper uses collision energy rather than friction to dissipate vibration and operates without compromising the flexure guide’s non-stick-slip movement. Impact dampers are divided into external and loading impact dampers. An external impact damper is applied here to settle transient amplifying-mechanism vibration and to determine differences in damping by setting damper conditions appropriately. The impact damper effectively eliminates residual vibration in the step response.

Hybrid charge control for stick–slip piezoelectric actuators

Mechatronics ◽  
2011 ◽  
Vol 21 (1) ◽  
pp. 100-108 ◽  
Author(s):  
Martin Špiller ◽  
Zdeněk Hurák
Keyword(s):  
Piezoelectric Actuators ◽  
Stick Slip ◽  
Charge Control

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.

A novel design of a 3-PRC translational compliant parallel micromanipulator for nanomanipulation

Robotica ◽  
2006 ◽  
Vol 24 (4) ◽  
pp. 527-528 ◽  
Author(s):  
Qingsong Xu ◽  
Yangmin Li
Keyword(s):  
Rigid Body ◽  
Piezoelectric Actuators ◽  
Proper Selection ◽  
Physical Constraints ◽  
Flexure Hinges ◽  
Novel Design ◽  
Selection Of

A novel 3-DOF prismatic-revolute-cylindrical (PRC) translational compliant parallel micromanipulator (CPM) has been designed for 3-D nanomanipulation in this paper. The system is configured by a proper selection of hardware and analyzed via the established pseudo-rigid-body (PRB) model. The CPM workspace is determined taking into account the physical constraints imposed by piezoelectric actuators and flexure hinges.

Study on improving the resolution of an H-shaped piezoelectric ultrasonic actuator by stick-slip principle

2021 ◽  
Author(s):  
Xinqi Tian ◽  
Weishan Chen ◽  
Yingxiang Liu ◽  
Jie Deng ◽  
Kai Li
Keyword(s):  
High Speed ◽  
Piezoelectric Actuators ◽  
Maximum Error ◽  
Operating Principle ◽  
Maximum Speed ◽  
Stick Slip ◽  
Output Displacement ◽  
Trade Offs ◽  
Motion Stage ◽  
Output Characteristics

Abstract Improving the performance of the motion stages driven by piezoelectric actuators is an enduring topic for expanding their applications. For the motion stage with a travel range of tens of millimeters, trade-offs are inevitable between getting high speed (hundreds of millimeters per second) and high resolution (tens of nanometers), due to the inherent limitations of the operating principles of the piezoelectric actuators. In order to improve the output resolution of an H-shaped piezoelectric ultrasonic actuator, sawtooth excitation voltages are used in this work rather than the conventional sinusoidal voltages in previous works. The configuration and operating principle of the actuator are discussed in detail. The actuator consists of two vertical and two horizontal longitudinal transducers. The ends of the vertical transducers act as the driving tips and drive the stage forward with the alternating slow extensions and rapid contraction, during which stick motions and slip motions of the stage are acquired. An analytic model is developed to estimate the horizontal and vertical output displacement of the driving tip. The maximum error between the predicted value of the analytical model and the experimental value is about 14%. A prototype of the motion stage is fabricated and experiments are carried out to evaluate its output characteristics. The experiment results confirm the operating principle and show that the resolution is upgraded to tens of nanometers. The prototype obtains a resolution of 19 nm, a maximum speed of 2.22 μm/s, and a maximum carrying load of 16.94 kg.

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.

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