Please use this identifier to cite or link to this item: https://doi.org/10.3182/20110828-6-IT-1002.02670
Title: Multi-frequency technique for frequency response measurement and its application to servo system with friction
Authors: Keikha, E.
Al Mamun, A. 
Lee, T.H. 
Bhatia, C.S. 
Keywords: Best linear approximation
Frequency response
Friction model
System identification
Issue Date: 2011
Source: Keikha, E.,Al Mamun, A.,Lee, T.H.,Bhatia, C.S. (2011). Multi-frequency technique for frequency response measurement and its application to servo system with friction. IFAC Proceedings Volumes (IFAC-PapersOnline) 18 (PART 1) : 5273-5278. ScholarBank@NUS Repository. https://doi.org/10.3182/20110828-6-IT-1002.02670
Abstract: In this paper, the effect of nonlinear distortion on system identification is studied. In particular, the effect of nonlinear friction on frequency response measurement is examined. Design of multifrequency excitation signal that minimizes nonlinear effect on frequency response measurement has been explored and the best linear approximation model has been defined. An identification method using differential No Interharmonic Distortion (NID) excitation with optimized crest factor is proposed. The method is used to identify the best linear model of a hard disk drive actuator. © 2011 IFAC.
Source Title: IFAC Proceedings Volumes (IFAC-PapersOnline)
URI: http://scholarbank.nus.edu.sg/handle/10635/71039
ISBN: 9783902661937
ISSN: 14746670
DOI: 10.3182/20110828-6-IT-1002.02670
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