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Adaptive feed-forward hysteresis compensation for piezoelectric actuators

Eielsen, Arnfinn Aas; Gravdahl, Jan Tommy; Pettersen, Kristin Ytterstad
Journal article, Peer reviewed
Published version
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Eielsen_Rev_Sci_Inst_2012+.pdf (1.346Mb)
URI
http://hdl.handle.net/11250/2445387
Date
2012
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  • Institutt for teknisk kybernetikk [2240]
  • Publikasjoner fra CRIStin - NTNU [20842]
Original version
Review of Scientific Instruments. 2012, 83 (8), .   10.1063/1.4739923
Abstract
Piezoelectric actuators are often employed for high-resolution positioning tasks. Hysteresis and creep nonlinearities inherent in such actuators deteriorate positioning accuracy. An online adaptive nonlinear hysteresis compensation scheme for the case of symmetric hysteretic responses and certain periodic reference trajectories is presented. The method has low complexity and is well suited for real-time implementation. Experimental results are presented in order to verify the method, and it is seen that the error due to hysteresis is reduced by more than 90% compared to when assuming a linear response.
Publisher
AIP Publishing
Journal
Review of Scientific Instruments

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