Relevant bibliographies by topics / Piezoelectric sensors and actuators

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  1. Journal articles

Academic literature on the topic 'Piezoelectric sensors and actuators'

Author: Grafiati
Published: 4 June 2021
Last updated: 2 February 2022

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Journal articles on the topic "Piezoelectric sensors and actuators"

1

Lee, C. K., and F. C. Moon. "Modal Sensors/Actuators." Journal of Applied Mechanics 57, no. 2 (1990): 434–41. http://dx.doi.org/10.1115/1.2892008.

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A piezoelectric laminate theory that uses the piezoelectric phenomenon to effect distributed control and sensing of structural vibration of a flexible plate has been used to develop a class of distributed sensor/actuators, that of modal sensors/actuators. The one-dimensional modal sensors/actuator equations are first derived theoretically and then examined experimentally. These modal equations indicate that distributed piezoelectric sensors/actuators can be adopted to measure/excite specific modes of one-dimensional plates and beams. If constructed correctly, actuator/observer spillover will not be present in systems adopting these types of sensors/actuators. A mode 1 and a mode 2 sensor for a one-dimensional cantilever plate were constructed and tested to examine the applicability of the modal sensors/actuators. A modal coordinate analyzer which allows us to measure any specific modal coordinate on-line real-time is proposed. Finally, a way to create a special two-dimensional modal sensor is presented.
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2

Park, Gyuhae, Charles R. Farrar, Amanda C. Rutherford, and Amy N. Robertson. "Piezoelectric Active Sensor Self-Diagnostics Using Electrical Admittance Measurements." Journal of Vibration and Acoustics 128, no. 4 (2006): 469–76. http://dx.doi.org/10.1115/1.2202157.

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This paper presents a piezoelectric sensor self-diagnostic procedure that performs in situ monitoring of the operational status of piezoelectric materials used for sensors and actuators in structural health monitoring (SHM) applications. The sensor/actuator self-diagnostic procedure, where the sensors/actuators are confirmed to be functioning properly during operation, is a critical component to successfully complete the SHM process with large numbers of active sensors typically installed in a structure. The premise of this procedure is to track the changes in the capacitive value of piezoelectric materials resulting from the degradation of the mechanical/electrical properties and its attachment to a host structure, which is manifested in the imaginary part of the measured electrical admittances. This paper concludes with an experimental example to demonstrate the feasibility of the proposed procedure.
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3

Lu, En, Wei Li, Xuefeng Yang, Yuqiao Wang, and Yufei Liu. "Dynamic Modeling and Analysis of a Rotating Piezoelectric Smart Beam." International Journal of Structural Stability and Dynamics 18, no. 01 (2018): 1850003. http://dx.doi.org/10.1142/s0219455418500037.

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In active vibration control study, piezoelectric actuators and sensors are bonded on the surface of a beam. They can change the frequency and modal characteristics of the system. This paper presents an analysis of the frequency response to a rotating piezoelectric smart beam. Hamilton’s principle along with the assumed mode method are employed to derive the governing equations of the first-order approximate coupling model for the piezoelectric smart beam. The coupling is taken into account as the second-order coupling effect of the axial elongation caused by the transverse displacement of the beam. Then, the equations are transformed into a dimensionless form after identifying the necessary parameters. The dimensionless natural frequencies of the piezoelectric smart beam corresponding to the bending and stretching vibrations are obtained through a numerical simulation, with comparison made of those of the beam with no actuator or sensor. Furthermore, the implication is investigated of the structural parameters and bond location on the piezoelectric actuators and sensors. Besides, the common case of a smart beam bonded with multiple pairs of piezoelectric actuators and sensors is studied, and the effects of the first natural frequency and tip deformation are analyzed. The research provides a theoretical reference for the optimization of structural parameters and location of piezoelectric actuators and sensors, thereby preventing the resonance when the excitation frequency is approximately equal to the natural frequency of the beam.
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4

Sung, C. K., T. F. Chen, and S. G. Chen. "Piezoelectric Modal Sensor/Actuator Design for Monitoring/Generating Flexural and Torsional Vibrations of Cylindrical Shells." Journal of Vibration and Acoustics 118, no. 1 (1996): 48–55. http://dx.doi.org/10.1115/1.2889634.

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This paper presents a methodology for designing piezoelectric sensors/actuators in an application to monitor/generate flexural and torsional vibrations of cylindrical shells. Based upon the classical laminate theory the equations of the electro-mechanical interactions, the constitutive, and the strain-displacement relations of piezoelectric composite cylindrical shells are derived. With these relations the piezoelectric sensor and actuator equations of the cylindrical shell are then developed. The modal sensors/actuators fabricated with PVDF embedded in the composite cylindrical shell capable of monitoring and generating vibrations of a particular mode or several combined modes are also developed. Finally, an experimental rig is designed to generate both the flexural and torsional vibrations of a circular cylindrical shaft for examining the capabilities of the modal sensors.
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5

Fredrick Gnanaraj, F., and K. R. Vijaya Kumar. "Design and Experimental Analysis of Composite Material with Piezoelectric Layer." Journal of Computational and Theoretical Nanoscience 17, no. 4 (2020): 1812–17. http://dx.doi.org/10.1166/jctn.2020.8445.

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The main objective of this work is to analyze the active vibration control using smart sensors and actuators in a laminated E-Glass/epoxy cyanate composite beam. The cantilevered composite beam has piezoelectric ceramic patches as smart sensors and actuators. Hand layup technique for vibration suppression is done on the fabricated E-Glass/Epoxy-cyanate composite laminated beam. Experimental modal testing is performed to achieve vibration suppression on the flexible composite beam bonded with seven circular type piezoelectric actuator elements and seven circular type sensor elements. The complete vibration suppression utilizes a data acquisition system, a real-time control system, and a functional generator, in addition to the composite beam with PZT sensor and actuator. The data acquisition hardware consists of model NI 9233 (4 channel +5 V 24 Bit IEPE Analog input I2VA 1-to earth ground).
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6

Tzou, H. S., and C. I. Tseng. "Distributed Modal Identification and Vibration Control of Continua: Piezoelectric Finite Element Formulation and Analysis." Journal of Dynamic Systems, Measurement, and Control 113, no. 3 (1991): 500–505. http://dx.doi.org/10.1115/1.2896438.

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“Smart” continua with integrated sensor/actuator for structural identification and control have drawn much attention in recent years due to the rapid development of high-performance “smart” structures. The continua are distributed and flexible in nature. Thus, distributed dynamic measurement and active vibration control are of importance to their high-demanding performance. In this paper, continua (shells or plates) integrated with distributed piezoelectric sensors and actuators are studied using a finite element technique. A new piezoelectric finite element with internal degrees of freedom is derived. Two control algorithms, namely, constant gain feedback control and Lyapunov control, are implemented. Structural identification and control of a plate model with distributed piezoelectric sensor/actuator is studied. Distributed modal voltage and control effectiveness of mono and biaxially polarized piezoelectric actuators are evaluated.
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7

Yao, Jun, Yan Fei Wu, and Huan Wang. "Optimal Design Method for Piezoelectric Sensors/Actuators Configuration." Advanced Materials Research 239-242 (May 2011): 815–20. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.815.

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In the active vibration control field, the piezoelectric element was extensively researched with the advantages of wide response frequency band, light weight, big driving force and good linearity, but they were mainly focused on the vibration suppression for smart structure and the study on the piezoelectric element used as excitation source in the vibration test was still limited. First, according to the electromechanical coupling equation of the piezoelectric material, the piezoelectric equation when the piezoelectric ceramic applied on the one-dimensional structure like beam was derived. Then the transfer functions from piezoelectric actuator to the piezoelectric sensor were established in cases of micro-element and limited size. The quasi-independent modal control method for piezoelectric beam was studied, which made several step modals being controlled by one group of piezoelectric film simultaneously is possible. And based on this, an optimal design method for placement of sensors/actuators in the vibration test in which the piezoelectric element was used as excitation source is found.
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8

Qian, Rong Rong, Zhi Yu Wen, and Li Chen. "A Piezoelectrically Actuated Scaning Micromirror Integrated with Angle Sensors." Key Engineering Materials 483 (June 2011): 437–42. http://dx.doi.org/10.4028/www.scientific.net/kem.483.437.

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A novel piezoelectrically actuated scanning micromirror integrated with angle sensors is presented. The mirror with large size of 3×3mm2 locates in the center of the device, and piezoelectric actuators are symmetrically placed on both sides of the mirror. They are connected through torsion bars in which piezoelectric angle sensors are integrated. In order to obtain large deflection angle at a low operation voltage, the new actuator consisting of several parallel piezoelectric cantilevers is adopted. The machematical models of the mirror and piezoelectric actuator are given, and the piezoelectric angle sensors are designed to obtain high sensitivities. The simulation results indicate that the maximum mechanical deflection angle of the micromirror is 12.4° at an operation voltage of 25V, and the maximum output voltage of the angle sensor is 164.3mV. The resonant frequency associated with the torsional mode is 960Hz. The sensitivity of the angle sensor is 13.3mV/° without amplifying. The Scanning miromirror is suitable for optical scanning systems such as the microscope, the micro-spectrometer, the medical imaging, the barcode reader and so on.
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9

Aktas, K. G., and I. Esen. "State-Space Modeling and Active Vibration Control of Smart Flexible Cantilever Beam with the Use of Finite Element Method." Engineering, Technology & Applied Science Research 10, no. 6 (2020): 6549–56. http://dx.doi.org/10.48084/etasr.3949.

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The aim of this study is to design a Linear Quadratic Regulator (LQR) controller for the active vibration control of a smart flexible cantilever beam. The mathematical model of the smart beam was created on the basis of the Euler-Bernoulli beam theory and the piezoelectric theory. State-space and finite element models used in the LQR controller design were developed. In the finite element model of the smart beam containing piezoelectric sensors and actuators, the beam was divided into ten finite elements. Each element had two nodes and two degrees of freedom were defined for each node, transverse displacement, and rotation. Two Piezoelectric ceramic lead Zirconate Titanate (PZT) patches were affixed to the upper and lower surfaces of the beam element as pairs of sensors and actuators. The location of the piezoelectric sensor and actuator pair changed and they were consecutively placed on the fixed part, the middle part, and the free end of the beam. In each case, the design of the LQR controller was made considering the first three dominant vibratory modes of the beam. The effect of the position of the sensor-actuator pair on the beam on the vibration damping capability of the controller was investigated. The best damping performance was found when the sensor-actuator pair was placed at the fixed end.
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10

Kim, J.-D., and S.-R. Nam. "Development of a Micro-Positioning Grinding Table Using Piezoelectric Voltage Feedback." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 209, no. 6 (1995): 469–74. http://dx.doi.org/10.1243/pime_proc_1995_209_110_02.

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Micro-positioning systems using piezoelectric actuators have a very wide range of applications including ultra-precision machine tools, optical devices and measurement systems. In order to ensure a high-precision displacement resolution, they use a position sensor and error feedback. From a practical point of view, a high-resolution displacement sensor system is very expensive and it is difficult to guarantee that such sensitive sensors work properly in the harsh operating environments of industry. In this paper, a micro-positioning grinding table has been developed which does not require a position sensor but instead uses piezoelectric voltage feedback. It is driven by a hysteresis-sensitive reference input voltage calculated by computer using the actuator/sensor characteristics of piezoelectric materials. The experimental results illustrate the fast and stable response of the micro-positioning system, and the paper suggests a more efficient technique for controlling piezoelectric actuators.
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