Journal articles: 'Piezoelectric stack actuator. eng'

1

Zaehringer, Sandy, Maximilian Spornraft, and Norbert Schwesinger. "Piezoelectric Bulk Material for the Fabrication of Membrane Actuators Using Surface Electrodes for Actuation." Applied Mechanics and Materials 404 (September 2013): 682–87. http://dx.doi.org/10.4028/www.scientific.net/amm.404.682.

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Using piezoelectric bulk material for manufacturing membrane actuators offers several advantages. Instead of manufacturing e.g. a silicon membrane and then either depositing a piezoelectric thinfilm actuator or mounting a piezo disc or stack to the silicon membrane, it is possible to use the piezoelectric material itself as membrane. Circular lead zirconate titanate (PZT) discs were adapted to silicon surface micromachining technologies. By depositing interdigitated electrode layouts several actuators were structured on one substrate. Those inderdigitated electrode layouts, when actuated, cause an inhomogeneous electric field distribution and thus cause an inhomogeneous mechanical stress distribution within the PZT-substrate. This forces the PZT to deflect in those actuated areas, without the usually needed passive membrane.

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Yang, Jingjing, Qiang Zhang, and Taojin Xu. "A Novel Piezoelectric Ceramic Actuator with Scissoring Composite Vibration for Medical Applications." Applied Sciences 9, no. 21 (2019): 4637. http://dx.doi.org/10.3390/app9214637.

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This paper presents a novel scissoring composite actuator which can successfully degenerate longitudinal vibration into scissoring vibration at actuator tips for potential medical applications. The proposed actuator consists of back mass, multilayer piezoceramic stack, front mass with netted pre-stress structure and beam. The actuator is driven by only a small axially poled multilayer piezoceramic stack. Moreover, a special symmetrical grooved structure is designed at the beam end to convert longitudinal driving vibration into opposite bending vibrations at the beam tip, resulting in scissoring-type composite vibration. The converted scissoring vibration concentrates on the beam tip without any deflection along other parts, which is highly desirable for narrow-spaced medical operations. The proposed design principle is demonstrated by structural analysis and verified by different types of finite element modeling (FEM) simulations, including Eigen frequency analysis, harmonic analysis, and transient analysis. The results reveal the design effectiveness of the actuator’s structure on scissoring-type mode excitation. Finally, a prototype of the proposed piezoelectric actuator is fabricated and tested, rendering superior performance and highly reliable mode conversion. The proposed actuator exhibits potential for advanced medical applications.

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He, Ye, Xiaoan Chen, Zhi Liu, and Yi Chen. "Active vibration control of motorized spindle based on mixed H∞/Kalman filter robust state feedback control." Journal of Vibration and Control 25, no. 6 (2019): 1279–93. http://dx.doi.org/10.1177/1077546318820935.

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In its working process, a high-speed motorized spindle bearing-rotor system is affected by a variety of vibration excitations, which severely affect the machining precision and reliability. In view of the problems in the active vibration control of current smart-material-based bearing-rotor systems and based on the structural layout of a piezoelectric device and a controlled bearing-rotor system, a bearing was directly connected to a piezoelectric actuator via a sleeve, which improved the working efficiency of the piezoelectric stack actuator. Furthermore, to improve the robustness of the system’s vibration control performance under different external excitations (e.g., cutting force and mass unbalance), uncertainties in internal parameters (changes in bearing stiffness and stiffness nonlinearity of piezoelectric materials), process and measure noises, a mixed state feedback algorithm based on [Formula: see text] norm optimization and a Kalman filter observer with state disturbance estimation was established. The dynamic and robust performance of the proposed method was compared with that of the linear quadratic Gaussian optimal control methods and [Formula: see text] output feedback control method through both simulation and experiment by changing the piezoelectric stacks without changing the control program.

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Mehrian, S. M. Nowruzpour, and S. Zamani Mehrian. "Modification of Space Truss Vibration Using Piezoelectric Actuator." Applied Mechanics and Materials 811 (November 2015): 246–52. http://dx.doi.org/10.4028/www.scientific.net/amm.811.246.

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The aim of this paper is finite element presentation for vibration response of the intelligent structure (consisting peizoeectric members) and modification of the response. The active element consists of a piezoelectric ceramic actuator stack, a force transducer and mechanical interfaces. An integral plus double-integral force controller is designed to suppress vibration of the truss. In this paper, in order to find the best piezoelectric operator’s location in spatial truss and optimizing the performance of the member by changing the property of the members, an algorithm is presented to achieve desired natural frequency. Therefore, finite element method of spatial truss is extracted. The results are admitted by ANSYS software. At the end, an example to show the application of the relations is given.

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Chen, Xiong Biao, D. Kong, and Q. S. Zhang. "On the Dynamics of Piezoelectric-Driven Stick-Slip Actuator." Key Engineering Materials 375-376 (March 2008): 648–52. http://dx.doi.org/10.4028/www.scientific.net/kem.375-376.648.

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Piezoelectric-driven stick-slip actuators have been drawing extensive attention for applications in the fields of scanning microscopy, micro robotics, and microsystems due to their well-defined step size and theoretically-unlimited displacement. In such an actuator, the dynamics of the end-effector displacement is of importance for its control and optimal design, yet challenging to be modeled due to the complexity involved. By taking into account the dynamics of piezoelectric element and the presliding friction acting on the end-effector, a model representative of the end-effector displacement is presented in this paper. The effectiveness of the developed model is illustrated by the experiments on the piezoelectric-driven stick-slip actuator prototyped in the authors’ lab.

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Zhou, Jinlong, Linghua Dong, and Weidong Yang. "A Double-Acting Piezoelectric Actuator for Helicopter Active Rotor." Actuators 10, no. 10 (2021): 247. http://dx.doi.org/10.3390/act10100247.

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An active rotor with trailing-edge flaps is an effective approach to alleviate vibrations and noise in helicopters. In this study, a compact piezoelectric actuator is proposed to drive trailing-edge flaps. The two groups of piezoelectric stacks accommodated in the actuator operate in opposition, and double-acting output can be realized through the differential motion of these stacks. A theoretical model and a finite element model are established to predict the output capability of this actuator, and structural optimization is performed using the finite element model. A prototype is built and tested on a benchtop to assess its performance. Test results demonstrate that the actuator stiffness reaches 801 N/mm, and its output stroke is up to ±0.27 mm when subjected to actuation voltage of 120 V. Agreement between measurements and simulations validates the accuracy of the established models. In addition, actuator outputs in failure modes are measured by canceling the supply voltage of one group of piezoelectric stacks. In this condition, the actuator can still generate acceptable outputs, and the initial position of the output end remains unchanged. Simulations and test results reveal that the proposed actuator achieves promising performance, and it is capable to be applied to a helicopter active rotor.

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Tamburrano, Paolo, Elia Distaso, Andrew R. Plummer, Francesco Sciatti, Pietro De Palma, and Riccardo Amirante. "Direct Drive Servovalves Actuated by Amplified Piezo-Stacks: Assessment through a Detailed Numerical Analysis." Actuators 10, no. 7 (2021): 156. http://dx.doi.org/10.3390/act10070156.

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This paper presents a feasibility study using commercially available amplified piezo-stacks for the direct actuation of four-way three-position (4/3) direct drive servovalves. The prospect of using amplified piezo-stacks in place of linear force motors is very attractive by virtue of their fast response speed and low weight. Piezo-stacks equipped with mechanical amplification systems can give levels of displacement suitable for this application. A very effective amplification system has recently been produced by some manufacturers and is based on a temperature-independent diamond structure. This paper details simulations of a 4/3 servovalve directly actuated by such a piezoelectric actuator with a diamond structure. To this end, well-established equations, implemented in Simulink by means of the libraries of Simscape Fluids, are used. The proposed architecture shows simplicity of construction; in addition, very good step response speed and frequency response are predicted by the simulations.

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Kushnir, Uri, and Oded Rabinovitch. "Advanced piezoelectric–ferroelectric stack actuator." Sensors and Actuators A: Physical 150, no. 1 (2009): 102–9. http://dx.doi.org/10.1016/j.sna.2008.11.036.

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9

Ardelean, Emil V., Daniel G. Cole, and Robert L. Clark. "High Performance ‘‘V-stack’’ Piezoelectric Actuator." Journal of Intelligent Material Systems and Structures 15, no. 11 (2004): 879–89. http://dx.doi.org/10.1177/1045389x04045150.

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10

Sakai, Takenobu, and Hiroshi Kawamoto. "Durability Properties of Piezoelectric Stack Actuator." Japanese Journal of Applied Physics 37, Part 1, No. 9B (1998): 5338–41. http://dx.doi.org/10.1143/jjap.37.5338.

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11

LIU Chang-li, 刘长利, 胡守柱 HU Shou-zhu, 郭海林 GUO Hai-lin, 王学军 WANG Xue-jun, and 章文俊 ZHANG Wen-jun. "Feed-forward control of stack piezoelectric actuator." Optics and Precision Engineering 24, no. 9 (2016): 2248–54. http://dx.doi.org/10.3788/ope.20162409.2248.

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SAKAI, Takenobu. "Improvement in Durability of Piezoelectric Stack Actuator." Journal of the Ceramic Society of Japan 107, no. 1245 (1999): 403–7. http://dx.doi.org/10.2109/jcersj.107.403.

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13

Zheng, K., X. H. Dong, and X. Tian. "Piezomechanics characteristics study of piezoelectric stack actuator." Materials Research Innovations 18, sup2 (2014): S2–132—S2–135. http://dx.doi.org/10.1179/1432891714z.000000000396.

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Guo, Yazi, Yuchuan Zhu, Yuyang Li, et al. "Model and experimental research of a hybrid self-contained electro-hydrostatic actuator using piezoelectric stack." Journal of Intelligent Material Systems and Structures 29, no. 7 (2017): 1348–59. http://dx.doi.org/10.1177/1045389x17733329.

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Smart material–based electro-hydrostatic actuators are a potential alternative to traditional hydraulic actuators. Piezoelectric materials are a type of smart materials that can deliver large blocked forces. In this article, a piezoelectric stack–based electro-hydrostatic actuator is first introduced by presenting the schematic diagrams of its structure and work principle. Next, according to the research of the piezoelectric stack–based electro-hydrostatic actuator working principle, a mathematical model that can describe the dynamic characteristics of piezoelectric stack–based electro-hydrostatic actuator was established. The output displacement model of the piezoelectric stack–based actuator was established based on the improved asymmetric Bouc–Wen model. The simulation model was built in MATLAB/Simulink. Finally, experiments under different working conditions were conducted, as well as the corresponding simulations. The experimental results demonstrate that the prototype no-load output flow reaches its maximum at 275 Hz and the output flow peak is close to 1.6 L/min. Moreover, the load capacity is more than 20 kg and the maximum load is more than 50 kg according to the trend forecast. The simulation results exhibit good agreement with the experimental results, which means that the piezoelectric stack–based electro-hydrostatic actuator model is feasible.

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Huang, Hehe, Longfei Wang, and Ying Wu. "Design and Experimental Research of a Rotary Micro-Actuator Based on a Shearing Piezoelectric Stack." Micromachines 10, no. 2 (2019): 96. http://dx.doi.org/10.3390/mi10020096.

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The working principle of a rotating micro-actuator based on a piezoelectric stack was theoretically analyzed and experimentally verified. The actuator is compact in structure, and the key component is the shearing piezoelectric stack. The piezoelectric stack is used to drive the micro-rotor via an electromechanical transition, which produces high-speed rotation of the micro-rotor. We first established the dynamic model of the micro-actuator and numerically analyzed the motion of this model. The step displacement output was observed by simulation, and the step increment is quite large. For experimental verification, we fabricated the piezoelectric micro-actuator with a size of 12 mm × 10 mm × 8 mm and mass of 4.12 g and conducted a series of experiments. The results show qualitative agreement with the theoretical results; the maximum output speed of the micro-actuator is 5.86 × 10 5 μ rad/s, and the motion resolution is 0.64 μ rad, which is greater than that of most traditional piezoelectric actuators. The proposed micro-actuator offers superior performance in driving of selected small objects, such as in micro-/nano-processing and cell operation.

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Lü, Q. F., X. F. Wang, K. Lu, and R. H. Huan. "Nonlinear Stochastic Optimal Control Using Piezoelectric Stack Inertial Actuator." Shock and Vibration 2020 (August 18, 2020): 1–7. http://dx.doi.org/10.1155/2020/5372045.

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An optimal control strategy for the random vibration reduction of nonlinear structures using piezoelectric stack inertial actuator is proposed. First, the dynamic model of the nonlinear structure considering the dynamics of a piezoelectric stack inertial actuator is established, and the motion equation of the coupled system is described by a quasi-non-integrable-Hamiltonian system. Then, using the stochastic averaging method, this quasi-non-integrable-Hamiltonian system is reduced to a one-dimensional averaged system for total energy. The optimal control law is determined by establishing and solving the dynamic programming equation. The proposed control law is analytical and can be fully executed by a piezoelectric stack inertial actuator. The responses of optimally controlled and uncontrolled systems are obtained by solving the Fokker–Planck–Kolmogorov (FPK) equation to evaluate the control effectiveness of the proposed strategy. Numerical results show that our proposed control strategy is effective for random vibration reduction of the nonlinear structures using piezoelectric stack inertial actuator, and the theoretical method is verified by comparing with the simulation results.

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ZHANG Cheng-jin, 张承进, 赵学良 ZHAO Xue-liang, and 刘红波 LIU Hong-bo. "Compensation for dynamic creep of stack piezoelectric actuator." Optics and Precision Engineering 23, no. 8 (2015): 2273–79. http://dx.doi.org/10.3788/ope.20152308.2273.

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Jin, Hong, Long Jin, Min Qiang Hu, and Zhi Ke Xu. "Dynamic Peculiarity of Piezoelectric-Stack Displacement-Amplifying Actuator." Applied Mechanics and Materials 105-107 (September 2011): 504–10. http://dx.doi.org/10.4028/www.scientific.net/amm.105-107.504.

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In order to find out the dynamic peculiarity of piezoelectric-stack displacement-amplifying actuator, three methods: harmonic response analysis, impedance test and dynamic grating projection are used to analyze it. Experimental results indicate that the displacement-amplifying mechanism can provide large output torque; its response time is less than 0.3ms; its mutation time of displacement is less than 0.5ms, the fluctuation of displacement is less than 5um, and the change of displacement vs. voltage is linearity variety; its dynamic displacement is smooth, when discharging. After analyzing the actuator, some virtues of dynamic response peculiarity are shown: rapidly responding, tiny displacement fluctuates, fine displacement linearity, higher precision, large output torque, etc. Therefore it can be abroad applied in many micro-displacement control and drive systems, which need high precision and large displacement. Its application prospect is worth to expect.

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An, Zeng Yong, Ming Long Xu, Fu Yang Tao, and Bo Feng. "Vibration Active Control Based on Torque Actuator of Piezoelectric-Stack." Advanced Materials Research 718-720 (July 2013): 1249–56. http://dx.doi.org/10.4028/www.scientific.net/amr.718-720.1249.

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Combining with the advantages of the piezoelectric material, positive and negative torque actuator using dual piezoelectric-stack is developed for vibration active control of annular flexible structure in this paper. The working principle of the actuator is described, and the output performance of the actuator is tested in this paper. Also the actuator is applied successfully to the vibration active control of annular flexible structure.

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Shi, Yunlai, Chengshu Lou, and Jun Zhang. "Investigation on a Linear Piezoelectric Actuator Based on Stick-Slip/Scan Excitation." Actuators 10, no. 2 (2021): 39. http://dx.doi.org/10.3390/act10020039.

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To perform a high resolution and long stroke application in optical precision instruments, a linear piezoelectric actuator operated in stick-slip/scan modes for driving a linear motion table is presented. The proposed piezoelectric actuator is a piezoelectric composite structure, which includes a metal elastomer, a piezoelectric stack, and a frictional ball. The purpose of this paper is to describe the operation principle, design, and the running test and resolution test of the linear motion table driven by the proposed piezoelectric actuator. The notable feature is the flexible hinges of the actuator, including composite hinge, pre-pressure adjustment flexible hinge, and transmission flexible hinge, which are designed for decoupling the motion in the action direction of the piezoelectric stack and the direction in which the pre-pressure is applied. A prototype has been fabricated and two operation modes of the piezoelectric actuator, stick-slip and scan mode, were utilized to test the driving characteristics of the linear motion table. Experimental results show that the finest step resolutions in stick-slip mode and scan mode achieved 12 nm and 4 nm, respectively.

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Wang, Jianjun, Weijie Li, Lei Qin, Jing Zhang, and Peijun Wei. "Effects of electrodes and protective layers on the electromechanical characteristics of piezoelectric stack actuators." Advanced Composites Letters 28 (January 1, 2019): 096369351987741. http://dx.doi.org/10.1177/0963693519877419.

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Piezoelectric stack actuators are a type of excellent smart devices that can activate large power and displacement outputs due to their unique stack configuration and have been widely used in linear vibrators for various engineering applications. For the fabricated piezoelectric stack actuator, it usually consists of multiple thin piezoelectric wafers, multiple electrodes, and two protective layers. All the piezoelectric wafers are connected electrically in parallel through the electrodes and are protected by two protective layers at the two ends. However, in most of the theoretical models, the active piezoelectric portion is mainly considered, while the electrodes and protective layers are usually neglected to simplify the complicated problem, which results in an inaccurate prediction of the electromechanical characteristics. In our previously published work, the exact theoretical models of the piezoelectric stack energy harvester and sensor with the electrodes and the protective layers included have been established successfully to evaluate the electromechanical performance of these two types of devices, and their validity has verified by the experimental results. However, the exact theoretical model of the piezoelectric stack actuators has not been established, and the effects of the electrodes and the protective layers on the electromechanical characteristics of the actuator are not fully understood. In this article, the exact theoretical model of piezoelectric stack actuator was derived based on our previous work, and the effects of these two factors on the electromechanical characteristics were investigated. Comparisons with the results in the earlier literatures and the experimental results were presented to validate the model. Furthermore, two kinds of typical working states, including clamped–free (C-F) and free–free (F-F), were discussed. The results showed that neglecting the electrodes and the protective layers will greatly affect the accuracy of the prediction model, thus providing some valuable guidelines in designing the piezoelectric stack actuators.

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An, Zeng Yong, Ming Long Xu, Shu Bao Shao, and Bo Feng. "Research for an Actuator Outputting Push and Pull Force." Advanced Materials Research 811 (September 2013): 478–83. http://dx.doi.org/10.4028/www.scientific.net/amr.811.478.

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Piezoelectric actuator is compared. The tension and compression symmetrical dual piezoelectric-stack actuator, studied in this paper, is presented finally. The structural principle of this actuator is introduced. The finite element model of this actuator is built up also. Dynamic performance of this actuator is simulated by the MATLAB Simulink, and the results of simulation are in agreement with that of the experiment.

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Ma, Yu Ting, Liang Huang, and Wei Wei Shao. "New Open Loop Control Improves Linearity of Piezoelectric Actuators." Advanced Materials Research 211-212 (February 2011): 520–24. http://dx.doi.org/10.4028/www.scientific.net/amr.211-212.520.

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The piezoelectric material is subject to hysteresis and creep resulting in a nonlinear relationship between the applied voltage and the output mechanical displacement. An approach for compensation of both the hysteresis and creep characteristics of a piezoelectric stack actuator is proposed by utilizing a switched capacitor charge pump. The new charge pump transfers the same amount of charges to the piezoelectric actuator quantitatively, and the actuator will be excited to change its length with constant step. Compared with voltage driving mode, experiments show that both creep and hysteresis of the piezoelectric stack driven by the charge pump are effectively reduced. A hysteresis reduction of 86.10% at 0.01Hz and 94.36% at 5Hz is achieved. At the maximum driving voltage, a creep reduction of 77% is obtained.

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Nandi, A., S. Neogy, S. Bhaduri, and H. Irretier. "Vibration Attenuation by a Combination of a Piezoelectric Stack and a Permanent Magnet." Shock and Vibration 19, no. 4 (2012): 719–34. http://dx.doi.org/10.1155/2012/358953.

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The present work proposes a non-contact vibration attenuator made up of a permanent magnet mounted on a piezoelectric stack. Two such actuators are made to work simultaneously in a 'twin-actuator' configuration. It is conceived that a controlled change in the gap between the actuator and the structure is capable of attenuation of vibration of the structure. This appropriate change in gap is achieved by controlled motion of the piezoelectric stacks. It is shown that the actuator works as an active damper when the extension and contraction of the actuators are made proportional to the velocity of the beam. The resolution of extension of a piezoelectric stack is in the order of nanometers. Thus in the proposed actuator the force of actuation can be applied with great precision. This actuator is also attractive for its simple constructional feature.

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Lin, Hsien-Yang, and Chien-Ching Ma. "Experimental Investigations on Dynamic Characteristics of a Multilayer Piezoelectric Stack Actuator." Journal of Mechanics 18, no. 2 (2002): 95–102. http://dx.doi.org/10.1017/s1727719100004615.

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AbstractMultilayer piezoelectric stack actuators are widely used in many industrial applications and the investigation on the dynamic behavior of this element is needed. In this study, two optical interferometric techniques called amplitude-fluctuation electronic speckle pattern interferometry (AF-ESPI) and laser Doppler vibrometer (LDV) are used to experimentally investigate the vibration characteristics of a single-layer piezoelectric disc and a multilayer piezoelectric stack actuator. These two techniques are full-field measurement for AF-ESPI and point-wise displacement measurement for LDV. Because the clear fringe patterns obtained by the AF-ESPI method will be shown only at resonant frequencies, both the resonant frequencies and corresponding vibration mode shapes of the piezoelectric disc and the multilayer piezoelectric stack actuator are obtained simultaneously by the AF-ESPI method. Interferometric fringe patterns for both the in-plane and out-of-plane vibration mode shapes are demonstrated. In addition to the proposed two optical techniques, numerical computations based on a commercially available finite element package are presented for comparison with the experimental results. Good agreement between the measured data by experimental methods and the numerical results predicted by FEM is found in resonant frequencies and mode shapes for the single-layer piezoelectric disc. However, some discrepancies are observed for the results obtained by AF-ESPI and impedance analysis for the multilayer piezoelectric stack actuator. A detailed discussion is made to address important issues of this problem.

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Chen, Yuansheng, Jinhao Qiu, Jose Palacios, and Edward C. Smith. "Tracking control of piezoelectric stack actuator using modified Prandtl–Ishlinskii model." Journal of Intelligent Material Systems and Structures 24, no. 6 (2012): 753–60. http://dx.doi.org/10.1177/1045389x12455725.

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This article presents the development of Prandtl–Ishlinskii hysteresis model and tracking control of piezoelectric stack actuator with severe hysteresis. Classical Prandtl–Ishlinskii model is a linearly weighted superposition of many backlash operators with different threshold and weight values, which inherits the symmetric property of the backlash operator at about the center point of the loop formed by the operators. To describe the asymmetric hysteresis of piezoelectric stack actuators, two modified operators were developed, one for ascending branches and another for descending branches. Based on this modified model, a feedforward controller was designed to compensate the hysteresis. Since the modified model describes the inverse of hysteresis, the feedforward controller and the hysteresis of piezoelectric stack actuator canceled each other. To attenuate the creep effect and reduce tracking error, a feedback controller was proposed to work with the feedforward controller. Experimental results show that this control scheme that combines feedforward and feedback controllers greatly improves the tracking of the piezoelectric actuator and the error is less than 0.15 µm.

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Yun, So Nam, Young Bog Ham, Jung Ho Park, and Byung Oh Choi. "Position Controller for Piezoelectric Actuator." Key Engineering Materials 326-328 (December 2006): 1399–402. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.1399.

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This paper presents a computer-based tracking control approach for a piezoelectric actuator based on incorporating a feedforward loop with a PID feedback controller. The purpose of this paper is to improve the hysteresis characteristics of a stack type piezoelectric actuator using the hysteresis nonlinearity compensator. The system proposed in this study prints by spraying the molten metal, and consists of a nozzle, heating furnace, operating actuator, and an XYZ 3-axis stage. As an operating system, the piezoelectric(PZT) method has very valuable uses. The PZT actuator, however, has a hysteresis nonlinearity due to the ferroelectric characteristics of the PZT element. This causes problems in the system position control characteristics and deteriorates the performance of the system. This study proposed a inverse hysteresis model, a mathematic modeling method that can express the geometric relationship between voltage and displacement, in order to reduce the hysteresis of the PZT actuator. In addition, system identification and PID control methods were examined. Also, it was confirmed that the proposed control strategy gives good tracking performance.

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Zheng, Kai, and Yi Yong Yang. "Study on the Mechanical Characteristics of Multilayer Piezoelectric Stack Actuator." Advanced Materials Research 308-310 (August 2011): 674–77. http://dx.doi.org/10.4028/www.scientific.net/amr.308-310.674.

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This paper presents results on mechanical behavior of multilayer piezoelectric stack actuators for use in active member under combined electro-mechanical Loadings. The objective of this study is to investigate the behavior of piezoelectric materials and to determine the properties necessary for design of such actuator systems. Two types of experiments are performed: influences of the preload on characteristics of the stack and dynamic test. The measurements indicate strong dependence of the actuator piezoelectric properties on the electro-mechanical loading conditions. The displacement output is initially enhanced with an increase of the mechanical preload, and the maximum value is obtained at the preload of about 0.4 KN. But much higher preload will cause the decrease of the displacement output. Within low frequency band of about 400 Hz, the displacement magnitude of the stack is nearly constant, and the phase lag increases with the increase of the driving frequency at the applied sine sweep voltage with the amplitude of 150V.

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Zhao, Xueliang, Chengjin Zhang, Hongbo Liu, Guilin Zhang, and Kang Li. "Analysis of Hysteresis-Free Creep of the Stack Piezoelectric Actuator." Mathematical Problems in Engineering 2013 (2013): 1–10. http://dx.doi.org/10.1155/2013/187262.

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A modified log-type creep model without hysteresis of the stack piezoelectric actuator is presented. For high-speed micro-/nanopositioning system, the time scale should be less than one second for creep modeling and control in the stack piezoelectric actuator. But creep effect was studied in the frame of minutes in previous works. Meanwhile, parameters of the classical creep models are hard to be determined. By the proposed model, the hysteresis and the creep effect can be separated. A series of experiments have been performed, where different staircase voltages have been applied to the actuator. There are two clear rules to follow in small duration and different heights to determine parameters. Firstly,L0starts from fixed point either in ascending stage or in descending stage and rotates clockwise. Secondly,γconverges to a small vicinity of a constant when the duration is small enough.

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Ardelean, Emil V., Mark A. McEver, Daniel G. Cole, and Robert L. Clark. "Active Flutter Control with a V-Stack Piezoelectric Flap Actuator." Journal of Aircraft 43, no. 2 (2006): 482–86. http://dx.doi.org/10.2514/1.12214.

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Jiang, Shiping, and Lei Cheng. "Modeling and design of a pre-stressed piezoelectric stack actuator." AIP Advances 7, no. 7 (2017): 075114. http://dx.doi.org/10.1063/1.4987133.

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Chuang, Ning, and Ian R. Petersen. "Robust H∞ control of hysteresis in a piezoelectric stack actuator." IFAC Proceedings Volumes 41, no. 2 (2008): 1996–2001. http://dx.doi.org/10.3182/20080706-5-kr-1001.00339.

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Huang, Weiqing, Junkai Lian, Mingyang Chen, and Dawei An. "Bidirectional Active Piezoelectric Actuator Based on Optimized Bridge-Type Amplifier." Micromachines 12, no. 9 (2021): 1013. http://dx.doi.org/10.3390/mi12091013.

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Piezoelectric actuators based on bridge displacement amplifying mechanisms are widely used in precision driving and positioning fields. The classical bridge mechanism relies on structural flexibility to realize the return stroke, which leads to the low positioning accuracy of the actuator. In this paper, a series bridge mechanism is proposed to realize a bidirectional active drive; the return stroke is driven by a piezoelectric stack rather than by the flexibility of the structure. By analyzing the parameter sensitivity of the bridge mechanism, the series actuation of the bridge mechanism is optimized and the static and dynamic solutions are carried out by using the finite element method. Compared with the hysteresis loop of the piezoelectric stack, the displacement curve of the proposed actuator is symmetric, and the maximum nonlinear error is improved. The experimental results show that the maximum driving stroke of the actuator is 129.41 μm, and the maximum nonlinear error is 5.48%.

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Chen, Weilin, Xianmin Zhang, and Sergej Fatikow. "A novel microgripper hybrid driven by a piezoelectric stack actuator and piezoelectric cantilever actuators." Review of Scientific Instruments 87, no. 11 (2016): 115003. http://dx.doi.org/10.1063/1.4967218.

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Changbin, Guan, and Jiao Zongxia. "A piezoelectric direct-drive servo valve with a novel multi-body contacting spool-driving mechanism: Design, modelling and experiment." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 228, no. 1 (2013): 169–85. http://dx.doi.org/10.1177/0954406213483072.

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Stack-type piezoelectric actuators, which usually consist of several ceramic layers connected in series, are widely used in piezoelectric direct-drive servo valves (PDDSV). However, poor pulling force capacity of this kind of actuators affects the performances of the direct-drive servo valves. This article presents a new type of PDDSV, whose spool-driving mechanism is composed of a set of independent parts that are not fixed together but are in contact with each other. This multi-body contacting spool-driving mechanism provides bidirectional movement of the spool by a preloaded stack-type piezoelectric actuator and a driving disc spring. This prevents the stack-type piezoelectric actuator from bearing the pulling force due to the inertia and friction of the spool. Design of the proposed servo valve is illustrated in detail and its characteristics are also predicted. Based on a nonlinear dynamic model of the multi-body contacting spool-driving mechanism, a comprehensive dynamic simulation model of the proposed PDDSV is established. Static and dynamic characteristics of the proposed PDDSV have been studied experimentally and good agreements between experimental and simulation results are observed. The dynamic performances of the proposed PDDSV are compared with the existing piezoelectric servo valves, which demonstrate that the proposed PDDSV has satisfactory dynamic characteristics for high-frequency applications.

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Wang, Wei, and Zhichun Yang. "A compact piezoelectric stack actuator and its simulation in vibration control." Tsinghua Science and Technology 14, S2 (2009): 43–48. http://dx.doi.org/10.1016/s1007-0214(10)70029-8.

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Yi, K. A., and R. J. Veillette. "A charge controller for linear operation of a piezoelectric stack actuator." IEEE Transactions on Control Systems Technology 13, no. 4 (2005): 517–26. http://dx.doi.org/10.1109/tcst.2005.847332.

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Yu, Yu Min. "Design and Analysis of a Piezoelectric Actuator." Advanced Materials Research 308-310 (August 2011): 2131–34. http://dx.doi.org/10.4028/www.scientific.net/amr.308-310.2131.

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Active materials are a group of solid-state materials whose geometric shape can be related to an energy input in the form of heat, light, electric field, or magnetic field. In the application of active materials to electromechanical energy conversion, electrical energy may be input to the material and the resulting deformation of the material can be used to move a load. The most common active materials used in actuators are piezoelectrics, magnetostrictives, and SMAs. In this paper, a piezoelectric actuation concept is presented that uses a new feed-screw motion accumulation technique. The feed-screw concept involves accumulating high frequency actuation strokes of a piezoelectric stack (driving element) by intermittently rotating nuts on an output feed-screw. The main parts of piezoelectric actuation such as clamp mechanism, rotary mechanism and “L type” driving mechanism are investigated. From the analysis, the deformation and stress of it are all under allowed value of 65Mn. The mathematics model of upside of rotary mechanism rotation motion is established. The results indicate that, the mechanisms of actuator all are satisfy the need of design

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Salloux, Kurt, James Lim, Bruce Dunn, Pavel M. Chaplya, and Gregory P. Carman. "Rechargeable Lithium Batteries for Powering Piezoelectric Devices." Journal of Intelligent Material Systems and Structures 11, no. 12 (2000): 930–35. http://dx.doi.org/10.1106/36aj-tunu-ep89-8g73.

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A new, rechargeable, thick-film, polymer electrolyte, lithium battery using a high-energy density cathode material (vanadium pentoxide aerogel, 350 mAh/g) has been tested in a pulse-discharge mode of operation. Three separate 12 volt batteries were pulse-discharged through a piezoelectric stack actuator. Since motion rectification devices such as linear motors operate at elevated frequencies, the batteries were pulse-discharged at 10, 100, and 500 Hz. Multiple cycle, charge/discharge data is presented for the three batteries tested in this study. Additionally, a 6 volt battery was fabricated and used to power a piezoelectric actuator patch (chirp source) that was part of a damage detection system.

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Xu, Rui, Dong Xu Li, and Jian Ping Jiang. "Fuzzy Vibration Control of Flexible Solar Panel Using Piezoelectric Stack." Applied Mechanics and Materials 50-51 (February 2011): 214–18. http://dx.doi.org/10.4028/www.scientific.net/amm.50-51.214.

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To effectively suppress vibrations of the flexible solar panel, the fuzzy logic control with piezoelectric smart structure is studied. The bending moment induced in the solar panel by the PZT stack actuator is formulated. The dynamical equations of the solar panel are derived. A fuzzy logic controller which uses universal fuzzy sets is designed. Considered the characteristic of the PZT stack, only positive control voltages were loaded to it. The finite element method simulation results demonstrate that the fuzzy logic controller can suppress the vibrations of the flexible spacecraft solar panel effectively.

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Evans, Matthew, Lihua Tang, and Kean C. Aw. "Modelling and optimisation of a force amplification energy harvester." Journal of Intelligent Material Systems and Structures 29, no. 9 (2018): 1941–52. http://dx.doi.org/10.1177/1045389x18754352.

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A flexure frame mechanism is a device historically used to amplify the displacement of an actuator with limited travel, such as a piezoelectric stack actuator. Conversely, these mechanisms may be used as a generator to amplify the force applied to piezoelectric transducers. This in turn can greatly increase the harvested power. Previous studies have used a variety of methods to analyse the amplification factor of a flexure frame mechanism operating as an actuator in displacement mode, as opposed to a generator in force amplification mode. The effects on the performance of such a device when operating in force amplification mode are not as well understood. In this study, an analysis of the force amplification of a flexure frame mechanism is conducted. A model of the force amplification factor based on the material properties and geometry of the device is developed for use as an optimisation and design tool. The analytical findings are compared against finite element analysis simulation and experimental results for validation. The effect of the stiffness of the central piezoelectric stack and the maximum stresses developed in the frame are determined to be critical parameters in determining the effectiveness of the mechanism as an energy harvester.

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Song, Laishou, and Pinqi Xia. "Active Vibration Control by Harmonic Input Compensation for Piezoelectric Stack Actuator Nonlinearity." Journal of Aircraft 51, no. 6 (2014): 2027–31. http://dx.doi.org/10.2514/1.c032752.

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Chae, Ki Woon, Wook-Bae Kim, and Young Hun Jeong. "A transparent polymeric flexure-hinge nanopositioner, actuated by a piezoelectric stack actuator." Nanotechnology 22, no. 33 (2011): 335501. http://dx.doi.org/10.1088/0957-4484/22/33/335501.

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Sheng, Wen, Zhang Tiemin, Zhang Jiantao, and Yang Xiuli. "Optimal Design of Cymbal Stack Transducer in a Piezoelectric Linear Actuator by Finite Element Method." Energy Harvesting and Systems 2, no. 3-4 (2015): 169–76. http://dx.doi.org/10.1515/ehs-2015-0006.

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Abstract The optimal design of a piezoelectric linear actuator using parametric optimum method-based finite element method (FEM) was presented. First, the FEM model of the cymbal stack transducer was generated with its initial configuration. The structural parameters were chosen as the design variables and the displacement on the top surface of the transducer taken as the objective function. Second, the zero-order optimization method was chosen as the basic tool of the structural updating. The structural optimization scheme of the cymbal stack transducer was carried out based on ANSYS parametric design language (APDL). Finally, an example of dynamic response analysis was performed on the cymbal stack transducer to verify the structural optimization scheme. The results show that the displacement on the top surface is increased by 32.9% compared with the case of initial configuration.

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Liu, Xinnan, Jianjun Wang, and Weijie Li. "Dynamic Analytical Solution of a Piezoelectric Stack Utilized in an Actuator and a Generator." Applied Sciences 8, no. 10 (2018): 1779. http://dx.doi.org/10.3390/app8101779.

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This paper presents the dynamic analytical solution of a piezoelectric stack utilized in an actuator and a generator based on the linear piezo-elasticity theory. The solutions for two different kinds of piezoelectric stacks under external load were obtained using the displacement method. The effects of load frequency and load amplitude on the dynamic characteristics of the stacks were discussed. The analytical solutions were validated using the available experimental results in special cases. The proposed model is able not only to predict the output properties of the devices, but also to reflect the inner electrical and mechanical components, which is helpful for designing piezoelectric actuators and generators in a comprehensive manner.

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Yan, Shao Ze, Kai Zheng, and Jian Xun. "Mechanical Properties of Piezoelectric Stack Actuators under Electro-Mechanical Loading." Key Engineering Materials 336-338 (April 2007): 331–34. http://dx.doi.org/10.4028/www.scientific.net/kem.336-338.331.

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The responses of the piezoelectric stack actuator under electro-mechanical loading are investigated. Two types of tests are performed: influences of the preload on characteristics of the stack and dynamic test. Experimental results indicate strong dependence of the stack properties on the electro-mechanical loading conditions. The displacement output is initially enhanced with an increase of the mechanical preload, and the maximum value is obtained at the preload of about 0.4 kN. But much higher preload will cause the decrease of the displacement output. The effective piezoelectric coefficient and the hysteresis degree are employed to describe the variations of the stack’s performances caused by the mechanical preload. The effective piezoelectric coefficient under different preloads can be calculated by using experimental results of the displacement output and input voltage. Within low frequency band of about 400 Hz, the displacement magnitude of the stack is nearly constant, and the phase lag increases with the increase of the driving frequency at the applied sine sweep voltage with the amplitude of 150V.

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Zheng, Kai, and Xing Hui Dong. "Experimental Analysis of Electro-Mechanical Characterization of Piezoelectric Stack Actuators." Advanced Materials Research 129-131 (August 2010): 28–32. http://dx.doi.org/10.4028/www.scientific.net/amr.129-131.28.

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This paper presents the results of experimental analysis and theoretical modeling of piezoelectric stack actuators. The focus of this paper is to understand the behavior of piezoelectric materials under the combined electro-mechanical loadings scenario, and to determine fundamental properties and optimum working conditions. Some parameters, including output displacement, hysteresis, output force and mechanical stiffness, are evaluated under varied pre-stress level and driven voltage values representative of in-service conditions. The measurements indicate strong dependence of the actuator piezoelectric properties and stiffness on the electro-mechanical loading conditions. This research also identified and calculated some parameters of the induced strain actuators electro-mechanical model, which are necessary to performing design optimization to achieve maximum energy transfer and minimum power consume.

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Sun, Guo Chun, Hui Guo, and Li Xin Xu. "Vibration Analysis and Control of an Active Power-Train Mount System." Applied Mechanics and Materials 341-342 (July 2013): 966–70. http://dx.doi.org/10.4028/www.scientific.net/amm.341-342.966.

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In order to improve the property of automotive power-train vibration isolation, reduce the vibration that is transmitted by the power-train to the vehicle chassis, we adopt an active control mount (ACM) which consists of elastic rubber and piezoelectric stack actuator in the system. A hydraulic mechanism is used in the ACM to achieve higher displacements. Through the analysis of the property of the rubber and piezoelectric stack actuator, a mechanical model of the active vibration isolation system with the active mounts is established. An optimal control algorithm is presented for engine vibration isolation system, the controller is designed according to linear quadratic regulator (LQR) theory, the linear quadratic performance index is composed of the vertical acceleration, pitching angular acceleration, and rolling angular acceleration of the chassis and the control signals. Simulation results show that active control system of ACM, effect in reducing body vibration than the passive system is obvious.

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Fu, Jie, Peidong Li, Guanyao Liao, Junjie Lai, and Miao Yu. "Active/semi-active hybrid isolation system with fuzzy switching controller." Journal of Intelligent Material Systems and Structures 29, no. 1 (2017): 101–15. http://dx.doi.org/10.1177/1045389x17733054.

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This article designs an active/semi-active hybrid isolator using magnetorheological elastomer isolator and piezoelectric stack actuator to suppress the wide-frequency vibration in precision platform, which can be switched to active isolator, semi-active one, and passive one according to the spectrum signature of the excitation. First, the structure of the hybrid isolator is introduced. Then, the dynamic model of the hybrid isolation system is established, the model parameters are identified, and the switching condition for the hybrid isolator is derived by experiments. Next, considering variable amplitude and frequency vibration of the isolated system, an active and semi-active fuzzy switch controller is designed for piezoelectric stack actuator and magnetorheological elastomer hybrid isolator, which are independent of the system model, self-tuning, and robust. Finally, the numerical simulations are conducted under variable frequency excitations to evaluate the performance of the designed fuzzy switch controller, and the results show that the hybrid isolator, combined with the fuzzy switch controller, can attenuate full frequency vibration effectively.

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Liu, Guojun, Yanyan Zhang, Jianfang Liu, et al. "An Unconventional Inchworm Actuator Based on PZT/ERFs Control Technology." Applied Bionics and Biomechanics 2016 (2016): 1–9. http://dx.doi.org/10.1155/2016/2804543.

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An unconventional inchworm actuator for precision positioning based on piezoelectric (PZT) actuation and electrorheological fluids (ERFs) control technology is presented. The actuator consists of actuation unit (PZT stack pump), fluid control unit (ERFs valve), and execution unit (hydraulic actuator). In view of smaller deformation of PZT stack, a new structure is designed for actuation unit, which integrates the advantages of two modes (namely, diaphragm type and piston type) of the volume changing of pump chamber. In order to improve the static shear yield strength of ERFs, a composite ERFs valve is designed, which adopts the series-parallel plate compound structure. The prototype of the inchworm actuator has been designed and manufactured in the lab. Systematic test results indicate that the displacement resolution of the unconventional inchworm actuator reaches 0.038 μm, and the maximum driving force and velocity are 42 N, 14.8 mm/s, respectively. The optimal working frequency for the maximum driving velocity is 120 Hz. The complete research and development processes further confirm the feasibility of developing a new type of inchworm actuator with high performance based on PZT actuation and ERFs control technology, which provides a reference for the future development of a new type of actuator.

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Journal articles on the topic 'Piezoelectric stack actuator. eng'

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