TY - GEN
T1 - On the detection of nonlinearities in sampled data
AU - Escobar, Jesica
AU - Enqvist, Martin
N1 - Funding Information:
Jesica Escobar would like to thank to the Mexican Council of Science and Technology (CONACYT) and Martin En-qvist would like to thank the Vinnova Industry Excellence Center LINK-SIC for the support given to this project.
PY - 2012
Y1 - 2012
N2 - Here we deal with the choice of the sampling rate in nonlinear system identification applications. In particular, we focus on the effect of the sampling rate when the prediction-error method is used. On one hand, a high sampling rate is advantageous since it enables the measurement of high-frequent nonlinear components in the output signal of the system without aliasing. However, a high sampling rate might also make it harder to realize that the system is nonlinear, since the nonlinearities cannot be detected in the residuals from a linear model in some cases. Here, this phenomenon is illustrated in a couple of numerical examples and a way to avoid it is proposed.
AB - Here we deal with the choice of the sampling rate in nonlinear system identification applications. In particular, we focus on the effect of the sampling rate when the prediction-error method is used. On one hand, a high sampling rate is advantageous since it enables the measurement of high-frequent nonlinear components in the output signal of the system without aliasing. However, a high sampling rate might also make it harder to realize that the system is nonlinear, since the nonlinearities cannot be detected in the residuals from a linear model in some cases. Here, this phenomenon is illustrated in a couple of numerical examples and a way to avoid it is proposed.
UR - http://www.scopus.com/inward/record.url?scp=84867053095&partnerID=8YFLogxK
U2 - 10.3182/20120711-3-BE-2027.00307
DO - 10.3182/20120711-3-BE-2027.00307
M3 - Contribución a la conferencia
AN - SCOPUS:84867053095
SN - 9783902823069
T3 - IFAC Proceedings Volumes (IFAC-PapersOnline)
SP - 1587
EP - 1592
BT - SYSID 2012 - 16th IFAC Symposium on System Identification, Final Program
PB - IFAC Secretariat
T2 - Universite Libre de Bruxelles
Y2 - 11 July 2012 through 13 July 2012
ER -