Please use this identifier to cite or link to this item: https://doi.org/10.1109/ICIEA.2012.6360987
Title: Identification and compensation of hysteretic dynamics of piezoelectric actuators for accurate and fast scanning
Authors: Liu, L.
Tan, K.K. 
Chen, S.
Teo, C.S.
Lee, T.H. 
Issue Date: 2012
Source: Liu, L.,Tan, K.K.,Chen, S.,Teo, C.S.,Lee, T.H. (2012). Identification and compensation of hysteretic dynamics of piezoelectric actuators for accurate and fast scanning. Proceedings of the 2012 7th IEEE Conference on Industrial Electronics and Applications, ICIEA 2012 : 1633-1638. ScholarBank@NUS Repository. https://doi.org/10.1109/ICIEA.2012.6360987
Abstract: The scanning and tracking accuracy of piezoelectric mechanisms over broadband frequencies are limited due to inherent dynamic hysteresis. This phenomenon has been a key bottleneck in the use of piezoelectric mechanisms in fast precision scanning applications. This paper presents a systemic model identification and composite control strategy without hysteresis measurement for such applications. First, least squares estimation using harmonic signals is applied to achieve the Preisach density function. Next, the hysteresis output is estimated using the identified Preisach model. Then, the non-hysteretic electric and vibration dynamics are identified. The discrete composite control strategy is proposed with a feedforward-feedback structure. The feedforward controller is the primary component designed for the performance. The secondary PI feedback controller is used to suppress the offset and disturbance for robustness. Finally, the identification and composite control strategy is implemented with a dSPACE 1104 board for a real piezo setup. The experimental results show that adequate scanning performance can be sustained at frequencies higher than the first resonant frequency. © 2012 IEEE.
Source Title: Proceedings of the 2012 7th IEEE Conference on Industrial Electronics and Applications, ICIEA 2012
URI: http://scholarbank.nus.edu.sg/handle/10635/70512
ISBN: 9781457721175
DOI: 10.1109/ICIEA.2012.6360987
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

39
checked on Jan 13, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.