Results 101 to 110 of about 7,096 (163)
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Load dynamics in piezoelectric actuation
2009 European Control Conference (ECC), 2009High control performance is essential in many precision positioning applications, such as control of the vertical sample position in a atomic-force microscope (AFM). This paper investigates the impact of load flexibility on piezoelectrically actuated positioning systems in terms of control performance.
Jan Roelf van Hulzen +3 more
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Piezoelectric Biomaterials for Sensors and Actuators
Advanced Materials, 2018AbstractRecent advances in materials, manufacturing, biotechnology, and microelectromechanical systems (MEMS) have fostered many exciting biosensors and bioactuators that are based on biocompatible piezoelectric materials. These biodevices can be safely integrated with biological systems for applications such as sensing biological forces, stimulating ...
Meysam T. Chorsi +7 more
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On the Nonlinear Behavior of Piezoelectric Actuators
Journal of Vibration and Control, 2004In this paper we present a theoretical and experimental study of the nonlinear behavior of piezoelectric actuators. The nonlinearities are introduced as quadratic terms in the piezoelectric constitutive relations. These relations are employed, together with supporting experimental results, to establish an engineering description of the nonlinearities ...
Arafa, M., Baz, A.
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Piezoelectric Actuator Designs
2008Piezoelectric actuators are getting immiscible parts of many important electromechanical and smart systems. Smart systems consist mainly of sensors, actuators, and signal processing units. Actuators are the responding units of many smart systems including those for active vibration and noise control, valve, shutter, focal lens, and many others ...
Dog?an A., Uzgur E.
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Review of Scientific Instruments, 2016
For the piezo-driven microgripper, one issue is to enlarge the grasping stroke and realize parallel grasping movement in the compact design. Piezoelectric stack actuator (PSA) and piezoelectric cantilever actuator (PCA) are two kinds of typical piezoelectric actuators. In this study, a novel microgripper hybrid driven by a PSA and two PCAs is proposed,
Weilin, Chen +2 more
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For the piezo-driven microgripper, one issue is to enlarge the grasping stroke and realize parallel grasping movement in the compact design. Piezoelectric stack actuator (PSA) and piezoelectric cantilever actuator (PCA) are two kinds of typical piezoelectric actuators. In this study, a novel microgripper hybrid driven by a PSA and two PCAs is proposed,
Weilin, Chen +2 more
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Piezoelectric Actuator Renaissance
Energy Harvesting and Systems, 2014Abstract “Politico-engineering” in the twenty-first century is generating “Piezoelectric Actuator Renaissance” in the area of sustainability and crisis technologies in particular. This paper reviews the recent advances in materials, designing concepts, and new applications of piezoelectric actuators and describes the future ...
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Actuation of a discontinuous structure with piezoelectric actuators
Journal of Sound and Vibration, 2008Abstract An alternate approach to exciting a one-dimensional structure with discontinuities using a piezoelectric actuator is presented and examined. Instead of being bonded to the uniform side of a beam, the piezoelectric actuator is attached such that it spans two adjacent rib discontinuities.
Jingdou Wang +3 more
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Piezoelectric Actuators Characterization
2012 International Conference on Industrial Control and Electronics Engineering, 2012This paper describes a system to drive piezoelectric actuators over more than one decade of voltages and one octave of frequencies, in order to perform high-speed complex impedance characterization at a user chosen voltage excitation level. This characterization provides information about electrical and mechanical characteristics of the device under ...
H. Meyer +6 more
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Piezoelectric actuators in micropositioning
Engineering Science & Education Journal, 2001Micromachines can be built only with the aid of other machines that have micropositioning abilities. Fast and precise positioning devices are needed to increase reliability and speed in the production of the miniaturized devices. Intensive research effort has been devoted to developing new technologies for actuators and sensors.
Pozzi M, King T
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On the Responsibility of Piezoelectric Actuator
Japanese Journal of Applied Physics, 1987A kind of multilayer piezoelectric actuators were manufactured to be able to respond within 10∼100 µsec for pulse field, and examined the pulse responsibility. The response time might be rather strongly dependent on the sample conditions than both of driving voltage and generated strain.
Hiromitsu Fujii, Yasushi Ohnishi
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