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Current Control Amplifier for Piezoelectric Actuator in Precision Positioning Control

[+] Author Affiliations
Changhai Ru

Harbin Engineering University, Harbin, China

Paper No. MNC2007-21060, pp. 1579-1583; 5 pages
  • 2007 First International Conference on Integration and Commercialization of Micro and Nanosystems
  • First International Conference on Integration and Commercialization of Micro and Nanosystems, Parts A and B
  • Sanya, Hainan, China, January 10–13, 2007
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4265-7 | eISBN: 0-7918-3794-7
  • Copyright © 2007 by ASME


Piezoelectric transducers are known to exhibit less hysterisis when driven with current or charge rather than voltage. Despite this advantage, such methods have found little practical application due to the poor low frequency response of present current and charge driver designs. In this paper, a current control piezoelectric amplifier is presented which can reduce hysteresis. Special circuits and a hybrid control algorithm realize the quick and precise positioning. Experimental results demonstrate that the amplifier can be used for dynamic and static applications. Low frequency bandwidths can be achieved.

Copyright © 2007 by ASME



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