An auxiliary capacitor based ultra-fast drive circuit for shear piezoelectric motors
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Author(s)
Chatterjee, Kamalesh
Boyer, Michael C.
Wise, W. D.
Hudson, Eric
Date Issued
September 2009
Journal
Review of Scientific Instruments
Publisher
American Institute of Physics
Citation
Chatterjee, Kamalesh et al. “An auxiliary capacitor based ultrafast drive circuit for shear piezoelectric motors.” Review of Scientific Instruments 80.9 (2009): 095110-5.
Version
Author's final manuscript
Abstract
Shear piezoelectric motors frequently require large voltage changes on very short time scales. Since piezos behave electrically as capacitors, this requires a drive circuit capable of quickly sourcing or sinking a large amount of current at high voltages. Here we describe a novel circuit design using a high voltage amplifier, transistor switching stage, and auxiliary capacitor. This circuit can drive piezoelectric motors at higher speeds and lower costs than conventional methods and with greater flexibility for computer automation. We illustrate its application in a controller for a scanning tunneling microscope coarse approach mechanism and discuss other possible applications and modifications of this circuit.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Attribution-Noncommercial-Share Alike 3.0 Unported
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DOI of Published Version
http://dx.doi.org/10.1063/1.3213619
