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|Title:||SVD-based Preisach hysteresis identification and composite control of piezo actuators|
|Citation:||Liu, L., Tan, K.K., Chen, S.-L., Huang, S., Lee, T.H. (2012-05). SVD-based Preisach hysteresis identification and composite control of piezo actuators. ISA Transactions 51 (3) : 430-438. ScholarBank@NUS Repository. https://doi.org/10.1016/j.isatra.2012.01.002|
|Abstract:||In this paper, the singular value decomposition (SVD) based identification and compensation of the hysteretic phenomenon in piezo actuators are addressed using a Preisach model. First, this paper presents an SVD-based least squares algorithm and a revision approach of the identification through updating the SVD. With the identified parameters and a log of the memory curve, a Preisach-based inversion compensator is constructed which is complemented with a feedback controller to address the inevitable and residual modeling errors. Experimental results are furnished for both the identification and compensation approaches. The Preisach-based feedforward controller significantly improves the tracking performance and reduces the root-mean-square (RMS) tracking error of a PID controller by 76.7% and 89% at 1 Hz and 25 Hz, respectively. With the proposed composite controller, the percent-RMS errors at 1 Hz and 25 Hz are reduced to 0.035% and 0.31%, respectively. © 2012 ISA. Published by Elsevier Ltd. All rights reserved.|
|Source Title:||ISA Transactions|
|Appears in Collections:||Staff Publications|
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