Results 21 to 30 of about 4,107 (256)
Bidirectional Active Piezoelectric Actuator Based on Optimized Bridge-Type Amplifier
Micromachines, 2021 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 ...
Weiqing Huang +3 more
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Sensors, 2021 Road power generation technology is of significance for constructing smart roads. With a high electromechanical conversion rate and high bearing capacity, the stack piezoelectric transducer is one of the most used structures in road energy harvesting to ...
Hailu Yang +5 more
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Performance Analysis of a Hybrid One-Sided Magnetic Exciter Mounted on a Piezoelectric Stack
Shock and Vibration, 2010 The present work proposes a non-contact hybrid exciter especially useful for harmonic excitation of lightly damped structures/rotors. In the proposed exciter an electromagnet is placed on a piezoelectric stack and the extension of the piezoelectric stack
A. Nandi, S. Neogy
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Electromechanical Modelling of a Piezoelectric Stack Energy Harvester
Proceedings, 2018 In this paper, the behavior of a piezoelectric stack generator subject to a direct mechanical force, such as that experienced by pedestrian loads, is characterized and modelled.
Matthew Evans +5 more
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Scientific Reports, 2023 The present study introduces a multi-degree-of-freedom (MDOF) ultrasonic motor, which is capable of driving a spherical rotor using spiral wire stators and a piezoelectric stack actuator. Wire stators and piezoelectric stack actuators enable the proposed
Seyed Hassan Jahantab +3 more
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Journal of Low Frequency Noise, Vibration and Active Control, 2023 A high-precision equipment is very sensitive to vibration, even micro vibration. How to isolate the low-frequency broadband multidirectional vibration remains a challenge.
Wentao Zou +3 more
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CHARACTERIZATION OF PIEZOELECTRIC STACK ACTUATORS FOR VIBROTHERMOGRAPHY
AIP Conference Proceedings, 2011 Vibrothermography, also known as Sonic IR and thermosonics, is an NDE technique for finding cracks and flaws based on vibration‐induced frictional rubbing of unbonded surfaces. The vibration is usually generated by a piezoelectric stack actuator which transduces electrical energy into large amplitude mechanical vibrations.
Jyani Vaddi +4 more
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Analysis of a Cascaded Piezoelectric Ultrasonic Transducer with Three Sets of Piezoelectric Ceramic Stacks [PDF]
Sensors, 2019 To increase the ultrasonic intensity and power of a piezoelectric transducer, a cascaded piezoelectric ultrasonic transducer with the three sets of piezoelectric ceramic stacks is analyzed. The cascaded piezoelectric ultrasonic transducer consists of four metal cylinders and three sets of piezoelectric ceramic stacks in the longitudinal direction.
Xiangdi Meng, Shuyu Lin
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Vibration Characteristics of Stacked Piezoelectric Transducers
Transactions of the Korean Society for Noise and Vibration Engineering, 2015 ABSTRACT This paper deals with the vibration characteristics of stacked transducers composed of piezoelectric discs, which are main elements of ultrasonic sensors or actuators. The stacked transducers were de-vised in the sense of natural frequencies. Two- or three-layer transducers were fabricated with piezo-electric discs of different diameters.
Dae Jong Kim, Jin Oh Kim
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Nihon Kikai Gakkai ronbunshu, 2016 A novel method for recovering antenna gains of a reflector antenna system using piezoelectric stack actuators and a focus adjustment mechanism is developed and its feasibility is investigated.
Hiroaki TANAKA
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