Bibliografie tematiche / Piezoelectric actuator

Letteratura scientifica selezionata sul tema "Piezoelectric actuator"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 31 luglio 2024

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Articoli di riviste sul tema "Piezoelectric actuator"

1

Liang, Kang, Chong Li, Yujian Tong, Jiwen Fang e Wei Zhong. "Design of a Low-Frequency Harmonic Rotary Piezoelectric Actuator". Actuators 10, n. 1 (27 dicembre 2020): 4. http://dx.doi.org/10.3390/act10010004.

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Abstract (sommario):
Piezoelectric actuators usually operate under a high frequency driving signal. Here we report a harmonic rotating piezoelectric actuator by coupling a harmonic wave generator and a friction rotor, in which the actuator can be actuated by a low-frequency sinusoidal signal with positive bias. The harmonic wave is generated by a two-stage magnifying mechanism consisting of a displacement amplifier and a harmonic rod. Applying piezoelectricity theory, the actuator’s output characteristic equations are deduced. What is more, the output characteristics of piezoelectric actuators are tested with the established experimental system. Results show that the generated harmonic displacements can drive the actuator to work normally at a driving voltage of larger than 90 V and the maximum total harmonic displacement of the piezoelectric actuator comes up to 427.6 μm under the driving voltage of 150 V. Meanwhile, the error between the measured and calculated values of the harmonic displacement is less than 7%. Furthermore, the rotational speed of the piezoelectric actuator reaches 5.45 rpm/min at 150 V voltage and 5 Hz driving frequency.
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2

Lee, Jae Hoon, Bum Soo Yoon, Ji-Won Park, Gunho Song e Kwang Joon Yoon. "Flexural Deflection Prediction of Piezo-Composite Unimorph Actuator Using Material Orthotropy and Nonlinearity of Piezoelectric Material Layer". Coatings 10, n. 5 (29 aprile 2020): 437. http://dx.doi.org/10.3390/coatings10050437.

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Layered piezo-composite unimorph actuators have been studied by many research teams to provide active vibration control of thin-walled aerospace structures, control the shapes of aircraft wing airfoils, and control the fins of small missiles, because they require less space and provide better frequency responses than conventional electro-magnetic motor actuator systems. However, due to the limited actuation strains of conventional piezo-composite unimorph actuators with poly-crystalline piezoelectric ceramic layers, they have not been implemented effectively as actuators for small aerospace vehicles. In this study, a lightweight piezo-composite unimorph actuator (LIPCA-S2) was manufactured and analyzed to predict its flexural actuation displacement. It was found that the actuated tip displacement of a piezo-composite cantilever could be predicted accurately using the proposed prediction model based on the nonlinear properties of the piezoelectric strain coefficient and elastic modulus of a piezoelectric single crystal.
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3

Ghosh, Bhaskar, Ravi K. Jain, S. Majumder, SS Roy e Sumit Mukhopadhyay. "Experimental characterizations of bimorph piezoelectric actuator for robotic assembly". Journal of Intelligent Material Systems and Structures 28, n. 15 (13 gennaio 2017): 2095–109. http://dx.doi.org/10.1177/1045389x16685441.

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Abstract (sommario):
Piezoelectric actuator is one of the most versatile types of smart actuators, extensively used in different industrial applications like robotics, microelectromechanical systems, micro-assembly, biological cell handling, self-assembly, and optical component handling in photonics. By applying potential to a piezoelectric actuator, it can produce micro level deflection with large force generation, very fast response, and long-term actuation as compared to other actuators. The design and analysis of the bimorph piezoelectric cantilever using proportional–integral controller are carried out where the bimorph piezoelectric actuator is used as an active actuator for providing the dexterous behavior during robotic assembly. Characterization of bimorph piezoelectric actuator carried out by controlling voltage signal provides steady-state behavior which is verified by conducting experiments. A prototype of micro gripper is also developed which shows the potential of handling small lightweight objects for robotic assembly.
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4

Zhong, Bowen, Zhan Liao, Xi Zhang, Ziqi Jin e Lining Sun. "Modeling of Rapid Response Characteristics of Piezoelectric Actuators for Ultra-Precision Machining". Materials 16, n. 6 (11 marzo 2023): 2272. http://dx.doi.org/10.3390/ma16062272.

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Abstract (sommario):
Piezoelectric actuators are characterized by high positioning accuracy, high stiffness and a fast response and are widely used in ultra-precision machining technologies such as fast tool servo technology and ultrasonic machining. The rapid response characteristics of piezoelectric actuators often determine the overall quality of machining. However, there has been little research on the fast response characteristics of piezoelectric actuators, and this knowledge gap will lead to low precision and poor quality of the final machining. The fast response characteristics of a piezoelectric actuator were studied in this work. Firstly, the piezoelectric actuator was divided into a no-load state and a load state according to the working state. A fast response analysis and output characteristic analysis were carried out, the corresponding dynamic model was established, and then the model was simulated. Finally, an experimental system was established to verify the dynamic model of the piezoelectric actuator’s fast response by conducting an experiment in which the piezoelectric actuator bounces a steel ball. The experimental results verify the correctness of the model and show that the greater the cross-sectional area and height of the piezoelectric actuator, the higher the bouncing height of the ball, and the better the dynamic performance of the piezoelectric actuator. It is believed that this study has guiding significance for the application of the dynamic characteristics of piezoelectric actuators in the machining field.
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5

Jiang, Xishan, Ning Wang, Jing Zheng e Jie Pan. "Experimental Validation of Two Types of Force Actuators: A Performance Comparison". Sensors 24, n. 12 (18 giugno 2024): 3950. http://dx.doi.org/10.3390/s24123950.

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This paper experimentally investigates the performance of piezoelectric force actuators. Using the same encapsulated piezoelectric stack, an inertial-type actuator and a frame-type actuator are constructed for performance comparison. The experimental results are also used to validate the recently established actuator models, whilst the mechanical and piezoelectrical parameters of the models are experimentally identified. The performance of the actuators is described by the transmitted force(s) and input power flow from the actuators to the base structure with reference to the same electrical input voltage to the stack. The validation is deemed successful due to the strong agreement observed between the measured and predicted actuator performances. Additionally, it is discovered that the frame-type actuator has the capacity to produce significantly higher transmitted forces and input power flow to the base structure compared to the inertial-type actuator. The mechanism underlying the performance disparity between these two types of actuators is also examined. This paper clarifies the mechanism, shedding light on the design and optimization of piezoelectric actuators.
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6

Ma, X., B. Zhou e S. F. Xue. "Investigation on Actuation Performance of Continuous Fiber Reinforced Piezoelectric Composite Actuator". Journal of Mechanics 36, n. 3 (10 dicembre 2019): 273–84. http://dx.doi.org/10.1017/jmech.2019.42.

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ABSTRACTIn this paper, a novel continuous fiber reinforced piezoelectric composite (CFRPC) actuator is proposed to improve the stability and reliability of piezoelectric actuators. A piezoelectric driving structure composed of a cantilever beam and the CFRPC actuator is utilized to research the actuation performance of the CFRPC actuator. The expression of the equivalent moment for the CFRPC actuator is obtained using the equivalent load method and electro-mechanical coupling theory. Based on Euler-Bernoulli beam theory, the analytical expression of the deflection for the cantilever beam is derived. The accuracy of the obtained analytical expressions is demonstrated by finite element simulation as well as published experimental results. The actuation performance of the CFRPC actuator is investigated through the analytical expressions of the equivalent moment and deflection. The results show that the key parameters such as driving voltage, fiber volume fraction, cantilever beam height, actuator height, actuator length and actuator position have great influence on the actuation performance of the CFRPC actuator. The CFRPC actuator has good mechanical and electrical properties, and has a wide application prospect in the field of structural shape control.
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7

Kanchan, Mithun, Mohith Santhya, Ritesh Bhat e Nithesh Naik. "Application of Modeling and Control Approaches of Piezoelectric Actuators: A Review". Technologies 11, n. 6 (1 novembre 2023): 155. http://dx.doi.org/10.3390/technologies11060155.

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Abstract (sommario):
Piezoelectric actuators find extensive application in delivering precision motion in the micrometer to nanometer range. The advantages of a broader range of motion, rapid response, higher stiffness, and large actuation force from piezoelectric actuators make them suitable for precision positioning applications. However, the inherent nonlinearity in the piezoelectric actuators under dynamic working conditions severely affects the accuracy of the generated motion. The nonlinearity in the piezoelectric actuators arises from hysteresis, creep, and vibration, which affect the performance of the piezoelectric actuator. Thus, there is a need for appropriate modeling and control approaches for piezoelectric actuators, which can model the nonlinearity phenomenon and provide adequate compensation to achieve higher motion accuracy. The present review covers different methods adopted for overcoming the nonlinearity issues in piezoelectric actuators. This review highlights the charge-based and voltage-based control methods that drive the piezoelectric actuators. The survey also includes different modeling approaches for the creep and hysteresis phenomenon of the piezoelectric actuators. In addition, the present review also highlights different control strategies and their applications in various types of piezoelectric actuators. An attempt is also made to compare the piezoelectric actuator’s different modeling and control approaches and highlight prospects.
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Molla, Dessalew, Marek Płaczek e Andrzej Wróbel. "Multiphysics Modeling and Material Selection Methods to Develop Optimal Piezoelectric Plate Actuators for Active Noise Cancellation". Applied Sciences 11, n. 24 (10 dicembre 2021): 11746. http://dx.doi.org/10.3390/app112411746.

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The performance of a piezoelectric actuator for active noise cancellation depends primarily on the quality of the actuator material and its design approach, i.e., single-layer or multi-layer actuators, stacks, benders, or amplified actuators. In this paper, material selection and multiphysics modeling were performed to develop an optimal piezoelectric plate actuator for active noise cancellation. The material selection process was analyzed using two multi-criteria decision making (MCDM) approaches for material selection, i.e., figure of merit (FOM) for actuators and the technique for order of performance by similarity to ideal solution (TOPSIS). Of the 12 state-of-the-art piezoelectric actuator materials considered in this article, PMN–28% PT is the best material according to TOPSIS analysis, while PbIn12Nb12O324%−PbMg13Nb13O3−PbTiO3 (PIN24%-PMN-PT) is the best material according to FOM analysis. The ranking of state-of-the-art piezoelectric material categories for actuators according to the two analysis is consistent and the category of monocrystalline piezoelectric materials has the highest actuation performance. The multiphysics modeling was performed using ANSYS Mechanical using two different approaches: one using Ansys Parametric Design Language (APDL) command fragments, the other installing the PiezoAndMEMS ACT extension in ANSYS. Static structure, modal, and harmonic response analyses were performed to determine an optimal pair of piezoelectric plates to be used as an actuator for active noise cancellation. A pair of plates of the same materials, but of different dimensions turns out to be the optimal piezoelectric plate actuator for active noise reduction, according to the two multiphysics modeling methods.
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Wang, Wei, Zikuo Zhang e Zhichun Yang. "Experiment and Modeling on Macro Fiber Composite Stress-Induced Actuation Function Degradation". Applied Sciences 9, n. 21 (5 novembre 2019): 4714. http://dx.doi.org/10.3390/app9214714.

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Abstract (sommario):
The effect of stress depolarization will cause actuation function degradation of a piezoelectric actuator, which can eventually trigger function failure of the piezoelectric smart structure system. In the present study, we experimentally demonstrate the degradation process of the actuation function of the Macro Fiber Composite (MFC) piezoelectric actuator. Actuation function degradation data of MFC actuators undergoing cyclic loads with four different stress amplitudes have been measured. Based upon the experimental results, the radial basis function (RBF) neural network learning algorithm was adopted to establish a neural network model, in order to predict the actuation function degenerative degree of the MFC actuator, undergoing arbitrary cyclic load within the concerned stress amplitude range. The maximum relative error between the predicted result and our experimental result is 4%.
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Nandi, A., S. Neogy, S. Bhaduri e H. Irretier. "Vibration Attenuation by a Combination of a Piezoelectric Stack and a Permanent Magnet". Shock and Vibration 19, n. 4 (2012): 719–34. http://dx.doi.org/10.1155/2012/358953.

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Abstract (sommario):
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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Tesi sul tema "Piezoelectric actuator"

1

Giurgea, Constantin. "Precise motion with piezoelectric actuator". Thesis, University of Ottawa (Canada), 2002. http://hdl.handle.net/10393/6184.

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The purpose of this study is to determine the displacement performance of a high accuracy-positioning device equipped with three piezo ceramic actuators. The displacement performance of each individual actuator is investigated in order to perform controlled motion over a very small range. A nanometric precision three-degrees of freedom positioner was designed and fabricated. In order to design a proper closed-loop controller, the open loop characteristics of the nanopositioner were experimentally investigated.
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2

Qiu, Yan. "Distributed piezoelectric actuator with complex shape". Thesis, Peninsula Technikon, 2002. http://hdl.handle.net/20.500.11838/1263.

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Thesis (MTech (Mechanical Engineering))--Peninsula Technikon, Cape Town, 2002
Distributed Piezoelectric Actuator (DPA) is one kind of actuator in the smart technology field. Firstly, DPA is one kind of solid-state actuator, and can be embedded in the structure. Secondly, it can be controlled by the electrical signal with high bandwidth and high precision. So it can be applied in the many different fields, such as high-resolution positioning, noise and vibration detection and shape control. Up to now, all of the DPA theory investigations and the product designs are based on applying the approximate electrical field. And only the rectangular shape DPA has been studied. The accurate distribution and intensity of electrical and mechanics field, and the numerical imitation for the DPA products with rectangular and other shapes have never been discussed and studied. Therefore, the development of DPA to be used in the micro application, such as in the Micro Electro-Mechanical System (MEMS), has been limited. This thesis has developed the analytical analysis models for two types of DPA elements and the part circular shape DPA element. The MathCAD and MATLAB program have been used to develop the analytical models. The ABAQUS program has also been used to compare the results between the analytical models and Finite Element Method (FEM). Finally, the accuracy and reliability of analytical models have been proved by results comparison between the analytical models, FEM and the product testing data from the industry. This thesis consists of five chapters. Chapter 1 is the introduction of smart structure. The characterizations of constituent materials, including the piezoelectric material and matrix epoxy material have been discussed in Chapter 2. In Chapter 3, the analytical models for two type of DPA element have been developed and the comparisons have also been completed. The analytical models for part circular shape DPA element have been developed in Chapter 4. The conclusions and recommendations are included in Chapter 5.
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Henslee, Isaac Andrew. "Macrofiber piezoelectric composite for lunar exploration actuator". Thesis, Montana State University, 2010. http://etd.lib.montana.edu/etd/2010/henslee/HensleeI0810.pdf.

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Understanding the nature and location of water and other resources on Earth's Moon is an essential component to the National Aeronautics and Space Administration's (NASA) space exploration efforts. To aid in these exploration efforts, an investigation into lightweight and reliable materials for a lunar valve actuator design has lead to characterizing the lifetime performance of the piezoelectric fiber composite, macro fiber composite (MFC). MFC's are thin rectangular patches made of polyimide film, epoxy and a single layer of rectangular lead zirconium titanate fibers and are commercially available. As a basis for this consideration, the useful life of the MFC is being characterized to determine the effect of temperature on the performance of the material as it is fatigued by cyclical piezoelectric excitation or actuation. The test specimen consist of the MFC laminated to a cantilevered stainless steel beam using epoxy and is actuated at the first resonant frequency of the beam laminate by the cyclic application of 1000 volts. Strain and beam tip displacement measurements are used as a basis for determining the performance of the MFC as it is cyclically actuated under various operating temperatures. The temperature of the beam laminate is held constant during cyclic actuation and cycled to failure or 250 million cycles, to determine the useful life of the MFC over a temperature range from -15°C to 145°C. The results of the experimentation efforts show a strong temperature dependence on operational life for the MFC. No significant degradation in operational performance was identified thru monitoring of the MFC, as the MFC was cyclically actuated up to the point of failure, regardless of temperature or actuation cycle. The results of the experimental testing can be used to better inform designs, such as actuators, using MFC in environments where operational temperatures differ from standard laboratory temperatures, as well as, to better design temperature controlled environments where MFC's are used as actuators.
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Fu, Bo. "Piezoelectric actuator design via multiobjective optimization methods". kostenfrei, 2005. http://ubdata.uni-paderborn.de/ediss/10/2005/fu/.

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deSa, Johann Lec Ryszard. "Manipulation of microparticles using a piezoelectric actuator /". Philadelphia, Pa. : Drexel University, 2009. http://hdl.handle.net/1860/3197.

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Tuncdemir, Safakcan. "Design Of Mini Swimming Robot Using Piezoelectric Actuator". Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605682/index.pdf.

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Abstract (sommario):
This thesis deals with the design, fabrication and analysis of a novel actuator for a fish-like swimming mini robot. The developed actuator is tested on a mini boat. The actuator relies on a novel piezoelectric ultrasonic motor, developed according to the design requirements of actuator for fish-like swimming mini robots. Developed motor is within the dimensions of 25x6x6 mm in a simple mechanical structure with simple driving circuitry compared to its predecessor. Bidirectional rotation of the motor is transformed to a flapping tail motion for underwater locomotion in a simple mechatronic structure. The simplicity in the motor and actuator enables further development on the miniaturization, improvement on the performances as well as easy and low cost manufacturing. The developed actuator is a candidate to be used in mini swimming robot with fish- like locomotion.
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Holmes, J. E. "Novel piezoelectric structures for sensor and actuator applications". Thesis, University of Birmingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.399477.

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Hu, Zhaoli. "Analyses and application of piezoelectric actuator in decoupled vibratory feeding". Columbus, Ohio : Ohio State University, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1131113775.

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Vinge, Even. "Nanopositioning : Construction and Analysis of a Piezoelectric Tube Actuator". Thesis, Norwegian University of Science and Technology, Department of Engineering Cybernetics, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9866.

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Piezoelectric tubes are commonly used as scanning actuators in nano precision microscopes. They can achieve precision down to sub-nanometer scale, but their vibrational dynamics and nonlinear properties hamper their ability to achieve higher bandwidths. In order to deal with this, further research is needed. This thesis is a first look into the field of piezoelectric tube actuators, intended to lay the groundwork for further research on the subject at NTNU. It details the construction of a laboratory setup for actuation and nanometer displacement measurement of a piezoelectric tube. Needed specifications are found and a mechanical setup is designed. Basic theory on piezoelectricity is presented, along with the setup and equipment used for the thesis. Several experiments are designed and conducted in order to identify the linear dynamics and nonlinear properties of the piezoelectric tube. The results are discussed and related to current literature. This includes the linear frequency responses from applied voltage to displacement of the piezoelectric tube, noise levels and nonlinear properties such as displacement creep and hysteresis. Generally, the results are found to closely match what has been found in similar research, although there are some notable differences, such as a somewhat smaller low frequency gain and a much lower resonant peak frequency of the system. Several possible explanations for these disparities are discussed. Both a capacitive sensor and a piezoelectric strain voltage sensor are utilized for measuring displacement. It is found that the capacitive sensor has a higher noise level but is more accurate at lower frequencies than the strain voltage sensor. The two measurements are then combined into an improved estimate of the displacement of the piezoelectric tube.

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Ring, Emma. "Modelling a piezoelectric-driven actuator for active flow control". Thesis, Linköpings universitet, Reglerteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-114957.

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Abstract (sommario):
Flow control is an area of research of particular interest within automotive and aerospace industries since methods used to affect the fluid flow around vehicles can reduce drag and therefore lower their fuel consumption. One of these methods, which has generated a lot of interest in later years, is called active flow control and uses different types of actuators to impact the surrounding flow. In this thesis a model of a piezoelectric actuator for active flow control has been developed using Lumped Element Modelling and equivalent circuits. This approach, together with the chosen software for implementation, Simulink, provides models which are easy to simulate and evaluate. The actuator model has been validated using a novel methodology with sub-models with the purpose of reducing computational costs. The actuator is therefore divided into two submodels,one for structural and one for fluid dynamics, which are validated separately. This enables the use of simple yet accurate FEM and CFD models instead of time consuming FSI software which the complete model requires. The three implemented models have been validated using cases presented in previous studies and data from CFD-simulations. The results show that the decoupled models can be validated separately and its results can be integrated into the complete model, although further tests with a real actuator is needed. In addition to the modelling, a parameter study of the actuator has been performed in order to prepare for prototype design.
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Libri sul tema "Piezoelectric actuator"

1

Holmes, James E. Novel piezoelectric structures for sensor and actuator applications. Birmingham: University of Birmingham, 2002.

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2

Segel, Joshua E. Piezoelectric actuators. Hauppauge, N.Y: Nova Science Publishers, 2011.

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3

Rupitsch, Stefan Johann. Piezoelectric Sensors and Actuators. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-57534-5.

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4

Uchino, Kenji. Piezoelectric Actuators and Ultrasonic Motors. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4613-1463-9.

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Center, Langley Research, a cura di. Flutter suppression via piezoelectric actuation. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1991.

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6

Ballas, R. G. Piezoelectric multilayer beam bending actuators: Static and dynamic behavior and aspects of sensor integration. Berlin: Springer, 2007.

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7

Shevtsov, Sergey N., Arkady N. Soloviev, Ivan A. Parinov, Alexander V. Cherpakov e Valery A. Chebanenko. Piezoelectric Actuators and Generators for Energy Harvesting. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-75629-5.

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Sharma, Pankaj. Vibration Analysis of Functionally Graded Piezoelectric Actuators. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-3717-8.

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Young-Min, Han, a cura di. Piezoelectric actuators: Control applications of smart materials. Boca Raton: Taylor & Francis, 2010.

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10

Goldfarb, Michael. Modeling piezoelectric stack actuators for control of micromanipulation. [Washington, DC: National Aeronautics and Space Administration, 1997.

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Capitoli di libri sul tema "Piezoelectric actuator"

1

Dog̃an*, Aydin, e Erman Uzgur. "Piezoelectric Actuator Designs". In Piezoelectric and Acoustic Materials for Transducer Applications, 341–71. Boston, MA: Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-76540-2_17.

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Kern, Thorsten A., Henry Haus, Marc Matysek e Stephanie Sindlinger. "Actuator Design". In Springer Series on Touch and Haptic Systems, 309–429. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-04536-3_9.

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Abstract (sommario):
AbstractActuators are the most important elements of any haptic device. Their selection or design significantly influences the quality of the haptic impression. This chapter deals with commonly used actuators, organized according to their physical principle of operation. It focuses on the electrodynamic, electromagnetic, electrostatic and piezoelectric actuator principles. Each actuator type is discussed in terms of its main physical principles, with examples of sizing and one or more applications. Other, less frequently used actuator principles are mentioned in several examples. The preceding chapters focused on the basics of control engineering and kinematic design. They covered topics of structuring and fundamental character. This and the following chapters deal with the design of technical components as parts of haptic devices. Experience teaches us that actuators for haptic applications can rarely be found “off-the-shelf”. Their requirements always include some outstanding features in rotational frequency, power-density, working point, or geometry. These specialities make it necessary and helpful for users to be aware of the capabilities and possibilities for modifying existing actuators. Hence this chapter addresses both groups of readers: the users who want to choose a certain actuator and the mechanical engineer who intends to design a specific actuator for a certain device from scratch.
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Mishra, Richa, e T. K. Bhattacharyya. "Piezoelectric Actuator-based Micropumps". In MEMS-based Transdermal Drug Delivery, 175–94. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9781003202264-9.

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Rupitsch, Stefan Johann. "Characterization of Sensor and Actuator Materials". In Piezoelectric Sensors and Actuators, 127–93. Berlin, Heidelberg: Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-57534-5_5.

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Chen, Ben M. "A Piezoelectric Actuator System Design". In H ∞ Control and Its Applications, 283–307. London: Springer London, 1998. http://dx.doi.org/10.1007/978-1-84628-529-5_11.

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Yun, So Nam, Young Bog Ham, Jung Ho Park e Byung Oh Choi. "Position Controller for Piezoelectric Actuator". In Experimental Mechanics in Nano and Biotechnology, 1399–402. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-415-4.1399.

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Rupitsch, Stefan Johann. "Simulation of Piezoelectric Sensor and Actuator Devices". In Piezoelectric Sensors and Actuators, 83–126. Berlin, Heidelberg: Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-57534-5_4.

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Maslan, Mohd Nazmin, Mohd Syafiq Syed Mohamed, Ruzaidi Zamri, Lokman Abdullah, Mahasan Mat Ali, Mohd Zamzuri Ab Rashid e Mohd Samsuddin Noorazizi. "Identification of a Piezoelectric Compact Actuator". In Lecture Notes in Mechanical Engineering, 138–45. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-9539-0_14.

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Chen, Ben M. "Design of a Piezoelectric Actuator System". In Robust and H∞ Control, 381–405. London: Springer London, 2000. http://dx.doi.org/10.1007/978-1-4471-3653-8_15.

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Chen, Ben M., Tong H. Lee e Venkatakrishnan Venkataramanan. "Design of a Piezoelectric Actuator System". In Hard Disk Drive Servo Systems, 203–24. London: Springer London, 2002. http://dx.doi.org/10.1007/978-1-4471-3712-2_8.

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Atti di convegni sul tema "Piezoelectric actuator"

1

Kang, Lae-Hyong, Jong-Won Lee, Jae-Hung Han, Sang-Joon Chung e Han-Young Ko. "A New Fabrication Method for a Curved Shape Piezoelectric Unimorph Actuator". In ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2008. http://dx.doi.org/10.1115/smasis2008-477.

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This paper proposes a new fabrication method for a curved shape piezoelectric actuator. Instead of using thermal coefficient mismatch, which has been used for conventional processes for curved shape actuators, we used pre-stressed substrates and the room temperature adhesion process. First, a substrate material is strained in the longitudinal direction, and then a piezoelectric material is attached on the substrate. A difference of the mechanical strains between the substrate and the piezoelectric layer makes the final manufactured actuator get curved. Using this method, the curved shape actuator can be easily fabricated at room temperature. Several performance tests of the proposed unimorph actuators were accomplished and the test results showed the proposed actuator got comparable actuation capability compared with conventional curved shape actuators.
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Jiang, Jing, Zong-Quan Deng, Hong-Hao Yue, Lei Wang e Horn-Sen Tzou. "Research on Constitutive Model of Hybrid Photovoltaic/Piezoelectric Actuation Mechanism". In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-37199.

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Opto-mechanical actuators do not require hard-wired connections to control light source. Accordingly, the control commands will not be influenced by undesirable electric noises. Without accessorial devices and connecting wires, photonic control which conforms to the lightweight trend of space structure has great research value. PLZT photostrictive actuator can only induce actuation strain along its polarized direction, so it has the deficiency of one-way actuation. In this paper, the novel hybrid photovoltaic/piezoelectric actuation mechanism is proposed to remedy this deficiency. The ultraviolet light-driven PLZT induced voltages are used to drive piezoelectric actuator. Based on the equivalent electrical model, constitutive model is established to define the time history of actuation strain of piezoelectric actuator driven by photovoltage. Experimental platform is established to verify this established constitutive model. A logical switch is designed to realize positive and negative connection switch between PLZT photovoltaic generator and piezoelectric actuator. It is experimentally validated that the piezoelectric actuator can induce both positive and negative control forces.
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Kiely, Edward, Gregory Washington e Jun-Kyung Song. "Analysis and Control of Mesoscale Actuator Systems". In ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-0943.

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Abstract A great deal of literature exists on the modeling and control of piezoelectric materials used as microscale actuators. These actuators take advantage of the converse piezoelectric effect to produce deflections on the order of tens of several microns. Typical applications include active noise control, active vibration control, platform actuation, and many others. Recently the design of mesoscale actuators (deflections from 1 mm – 15 mm) has been a topic of study for many researchers. This study deals with the design and control of a mesoscale actuator comprised of stacked piezoelectric Rainbow wafers. The advantages of using piezoelectric materials for actuation include low power usage, fast response times, accurate displacement, and low cost. However, these advantages do not come without a tradeoff. The effects of hysteresis and creep, while apparent in traditional microscale piezoelectric actuators, are magnified with the increased deflection of these new actuators. Because of this fact, control of the actuator – plant system becomes more difficult. In addition, the uniform manufacture of uniformly spherical Rainbows is difficult, introducing the problem of inconsistent behavior among individual Rainbows. Although numerous, these problems can be overcome by employing various dynamic control techniques. The work in this study presents and experimentally verifies a model of a Rainbow actuator based on shell theory. The system is then controlled using both classical and intelligent control techniques. In addition hardware and circuitry issues are explored.
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Huang, Po-Lin, e Jen-Yuan (James) Chang. "Development of Novel Tooth-Matching Linear Piezoelectric Actuator". In ASME 2019 28th Conference on Information Storage and Processing Systems. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/isps2019-7497.

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Abstract This paper proposes a new concept of piezoelectric actuator. It is different from ordinary piezoelectric actuators which are actuated by friction, and wear becomes a major problem in long-term use. The main purpose of this research is to drive the motor without friction. Hence, the actuator driven by resonance force is proposed here. The foundation of the actuator is based on piezoelectric material which possess the inverse piezoelectric effect itself. The axial deformation of piezoelectric material is worked as excitation here, which makes the stator subjected to mutative equivalent force along the time. At the same time, the input frequency of sinusoidal voltage is controlled and applied to the stators which makes the stators resonated and in contact with motor for pushing the motor forward. In addition to proposing the preliminary design concept of linear piezoelectric actuator, the dynamic model of the piezoelectric actuator system is firstly studied by Hamilton’s Principle. Then, the finite element method is used to calculate the modal analysis of stator. Finally, the prototype is fabricated and experiment platform is established. The vibration response of stators is measured by laser Doppler vibration measuring system, which is able to verify reasonableness of the constructed finite element model and feasibility of linear piezoelectric actuator.
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Ali, M. Yakut, Cuifang Kuang, Jamil Khan e Guiren Wang. "A Piezoelectric Micropumping Device". In ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer. ASMEDC, 2009. http://dx.doi.org/10.1115/mnhmt2009-18512.

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A dynamic micropumping device has been developed, which is based on acoustic streaming generated by a piezoelectric microtransducer actuated in d31 mode without any check valve. Piezoelectric microtransducers immersed in liquid (water) are used as actuators due to some of their unique properties such as lower noise generation and ease of miniaturization. Quantitative results of maximum local velocity are presented for different tip configuration of the same actuator for comparison. In addition, this work also demonstrates the quantitative measures of the pumping performance such as the pressure head generated as a function of different relevant parameters such as applied electrical field, AC frequency and length of the actuator.
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Cheong, Jongpil, Srinivas A. Tadigadapa e Christopher D. Rahn. "Piezoelectric microflextensional actuator". In Micromachining and Microfabrication, a cura di Siegfried W. Janson e Albert K. Henning. SPIE, 2004. http://dx.doi.org/10.1117/12.524817.

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Near, Craig D. "Piezoelectric actuator technology". In 1996 Symposium on Smart Structures and Materials, a cura di Inderjit Chopra. SPIE, 1996. http://dx.doi.org/10.1117/12.239027.

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Kommepalli, Hareesh K. R., Christopher D. Rahn e Srinivas A. Tadigadapa. "Optimization of Piezoelectric Uniflex Microactuators". In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-87594.

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Microactuators provide controlled motion and force for applications ranging from RF switches to rate gyros. Large amplitude response in piezoelectric actuators requires amplification of their small strain. This paper studies the performance of a uniflex actuator in terms of its displacement and blocking force compared to uniflex and flextensional actuators. A uniflex microactuator combines the strain amplification mechanisms of a unimorph and flexural motion to produce large displacement and blocking force. Analytical models for displacement and blocking force for all the three actuators are used in optimization, to study their relative performance. The uniflex actuator outperforms both unimorph and flextensional actuators in displacement, but, the unimorph actuator generates more blocking force. The uniflex actuator can therefore be used in applications that demand higher displacement and lower blocking force compared to a unimorph actuator.
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Kang, Lae-Hyong, e Jae-Hung Han. "Performance Evaluation of the Pre-Stressed Piezoelectric Unimorph Using Nonlinear Piezoelectric Properties". In ASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2010. http://dx.doi.org/10.1115/smasis2010-3650.

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Piezoelectric actuators operate when the electric field (voltage) is applied to them. This piezoelectric behavior is defined using piezoelectric strain coefficients which are generally assumed to be constant. However, when high electric fields are applied to the piezoelectric actuators the piezoelectric strain constant may increase up to more than twice of the nominal value and, thus, cannot be considered as a constant value. Besides, in case of the pre-stressed piezoelectric unimorph actuators, the stress conditions inside piezoelectric actuators can affect piezoelectric behaviors. For reasons mentioned above, actuation performance of PUMPS actuator, which is one of the pre-stressed piezoelectric actuators developed by present authors, cannot be predicted accurately without consideration of piezoelectric nonlinearities such as voltage and stress effects. Generally, the piezoelectric behavior is mainly affected by the piezoelectric strain coefficient and the elastic modulus. Therefore, the voltage and stress effects on the piezoelectric strain coefficient and the elastic modulus of piezoelectric layer were investigated, and the results were used for prediction of actuation performance of PUMPS. Taking the nonlinear material properties of the piezoelectric layer into account, the actuation performance of PUMPS was accurately predicted in this study.
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Dancila, D. Stefan, e Erian A. Armanios. "Large Displacement Piezoelectric Actuator Configurations". In ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-0941.

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Abstract In the present work three configurations of compact size, large rotation piezoelectric bimorph actuators are proposed and analyzed, and their static response to control voltage is analytically modeled. The actuator configurations can be characterized as thin, coiled, single curvature bimorph piezoelectric shells with thickness polarization and electroded faces. Compared to a cantilevered bimorph, the configurations analyzed in this work are more compact and allow an increase in actuator displacement output — in this case a rotation — without degradation of blocked moment output. The analytical models developed are verified by comparison with finite element results for a set of generic geometric parameters defining each of the three configurations. Relevant electroelastic properties of a typical piezoelectric material are assumed. An excellent correlation of results is found, confirming the accuracy of the analytical modeling of response as well as the large rotation capability of this class of actuators.
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Rapporti di organizzazioni sul tema "Piezoelectric actuator"

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Bailey, Thomas, Alexander Gruzen e Paul Madden. RCS/Piezoelectric Distributed Actuator Study. Fort Belvoir, VA: Defense Technical Information Center, agosto 1988. http://dx.doi.org/10.21236/ada201276.

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Booth, Janice C., Tracy Hudson, Brian A. English, Michael R. Whitley e Michael S. Kranz. Integrated Printed Circuit Board (PCB) Active Cooling With Piezoelectric Actuator. Fort Belvoir, VA: Defense Technical Information Center, settembre 2012. http://dx.doi.org/10.21236/ada567661.

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Hall, Asha, e Mark Bundy. Overview of Piezoelectric Actuator Displacement Measurements Utilizing a MTI-2100 Fotonic Sensor. Fort Belvoir, VA: Defense Technical Information Center, aprile 2011. http://dx.doi.org/10.21236/ada540429.

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Lynch, Christopher S., e Chad Landis. Development of a Non-Linear Element Code for the Improvement of Piezoelectric Actuator Design and Reliability. Fort Belvoir, VA: Defense Technical Information Center, giugno 2006. http://dx.doi.org/10.21236/ada459521.

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5

Sayir, Ali, e Alp Sehirlioglu. Piezoelectric Ceramics for High Temperature Actuators. Fort Belvoir, VA: Defense Technical Information Center, luglio 2009. http://dx.doi.org/10.21236/ada583233.

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Sayir, Ali. Piezoelectric Ceramics for High Temperature Actuators. Fort Belvoir, VA: Defense Technical Information Center, aprile 2006. http://dx.doi.org/10.21236/ada589651.

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Rahn, Christopher D., e Srinivas A. Tadigadapa. High Performance Piezoelectric Actuators and Wings for Nano Air Vehicles. Fort Belvoir, VA: Defense Technical Information Center, agosto 2012. http://dx.doi.org/10.21236/ada567097.

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8

Near, Craig D. Flexible Fabrication of High Performance Piezoelectric Actuators by Injection Molding. Fort Belvoir, VA: Defense Technical Information Center, novembre 1999. http://dx.doi.org/10.21236/ada379116.

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Birman, Victor. Physically Nonlinear Behavior of Piezoelectric Actuators Subject to High Electric Fields. Fort Belvoir, VA: Defense Technical Information Center, febbraio 2005. http://dx.doi.org/10.21236/ada430182.

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