Paper Title:
Modeling of Micro-Positioning System Using Direct Mapping and Polynomial Fit for Precision Grinding Process Control
  Abstract

For micro-positioning systems using piezoelectric actuators for precision grinding process control, sinusoidal command signals will be used and will give additional problems in comparison with the commonly used step signals due to the hysteresis effects, which require a good modeling approach. In order to avoid the discontinuity problem in obtaining the values of the piezoelectric constant, a new approach of direct mapping with polynomial fit is proposed. Theoretical and experimental studies are conducted and comparative studies are made. Compared with the single polynomial approach, the proposed method of direct mapping with polynomial fit is able to reduce the modeling error to 12.5%, which is 6.5% lower, and the problems in obtaining the values of the piezoelectric constant are avoided. The proposed approach is shown advantageous. Further studies are necessary to significantly reduce the modeling error.

  Info
Periodical
Edited by
Dongming Guo, Tsunemoto Kuriyagawa, Jun Wang and Jun’ichi Tamaki
Pages
791-796
DOI
10.4028/www.scientific.net/KEM.329.791
Citation
S. Tse, Y. Gao, "Modeling of Micro-Positioning System Using Direct Mapping and Polynomial Fit for Precision Grinding Process Control", Key Engineering Materials, Vol. 329, pp. 791-796, 2007
Online since
January 2007
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