Hybrid Charge Control for Grounded Stick-Slip Piezoelectric Actuators

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F10%3A00172546" target="_blank" >RIV/68407700:21230/10:00172546 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Hybrid Charge Control for Grounded Stick-Slip Piezoelectric Actuators
Original language description
The article describes an analog electronic circuit for driving grounded stick-slip piezoelectric actuators. The task for the amplifier is to produce a high-voltage asymmetric sawtooth-like signal and feed it into a rather capacitive piezo leg. Generationof excessive heat must be avoided while maximizing the slew rate, which is necessary to minimize backlash. Hysteretic behaviour of the piezoelectric material must also be compensated in order to guarantee a smooth linear motion. Combination of a chargecontrol scheme with switching is proposed as an efficient solution. A modification to the conventional charge control scheme had to be made, though. Having the load (piezo) grounded enables driving several channels from a single device, which is needed,for example, when controlling x-y actuator stages but requires use of a differential amplifier in the loop. Laboratory experiments with piezoelectric stick-slip microactuators confirm superiority over existing and known techniques.
Czech name
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Czech description
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Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the 12th International Conference on New Actuators
ISBN
978-3-933339-12-6
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
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Publisher name
WFB Wirtschaftsförderung Bremen GmbH, Division Messe Bremen
Place of publication
Bremen
Event location
Bremen
Event date
Jun 14, 2010
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000279861200221

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