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TECHNICAL PAPERS

Application of a Fast-Stabilizing Frequency Domain Parameter Estimation Method

[+] Author and Article Information
H. Van der Auweraer

LMS International, Interleuvenlaan 68, B-3001 Leuven, Belgiume-mail: herman.vanderauweraer@lms.be

P. Guillaume, P. Verboven

Department of Mechanical Engineering, WERK, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussel, Belgium

S. Vanlanduit

Department of Electrical Engineering, ELEC, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussel, Belgium

J. Dyn. Sys., Meas., Control 123(4), 651-658 (Jan 31, 2001) (8 pages) doi:10.1115/1.1410369 History: Received January 31, 2001
Copyright © 2001 by ASME
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References

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Guillaume,  P., Schoukens,  J., Pintelon,  R., and Kollar,  I., 1991, “Crest-factor minimization using nonlinear Chebyshev approximation methods,” IEEE Trans. Instrum. Meas., 40, No. 6.
Schoukens, J., Rolain, Y., Gustafsson, F., and Pintelon, R., 1998, “Fast calculation of least-squares estimates for system identification,” Internal note, no. 1998-1, Vrije Universiteit Brussel.
Pintelon,  R., Guillaume,  P., Vandersteen,  G., and Polain,  Y., 1998, “Analysis, Development and Applications of TLS Algorithms in Frequency-Domain System Identification,” SIAM J. Matrix Anal. Appl., 19, No. 4, pp. 983–1004.
Cooper, J., 1999, “On the Use of Stability Plots for Modal Parameter Identification,” Proc. 2-nd Int. Conference on Identification in Engineering Systems, Swansea, pp. 375–381.
Van der Auweraer, H., Steinbichler, H., Haberstok, C., Freymann, R., Storer, D., and Linet, V., 2001, “Industrial applications of pulsed-laser espi vibration analysis,” Proc. IMAC 2001, Orlando (FL), pp. 490–496.
Van der Auweraer, H., Dierckx, B., Haberstock, C., Freymann, R., and Vanlanduit, S., 1999, “Structural Modeling of Car Panels Using Holographic Modal Analysis,” SAE paper 1999-01-1849, Proc. SAE Noise and Vibration Conference, Traverse City (MI), May 17–20, 1999, pp. 1495–1506.
Vanlanduit,  S., Guillaume,  P., and Schoukens,  J., 1998, “Development of a data reduction procedure with noise extraction for high resolution optical measurements,” Proc. SPIE, 3411, pp. 357–365.
Lembregts,  F., Snoeys,  R., and Leuridan,  J., 1987, “Application and Evaluation of Multiple Input Modal Parameter Estimation,” Int. Journal of Modal Analysis, 2, No. 1, pp. 19–31.
Van der Auweraer, H., Leurs, W., Mas, P., and Hermans, L., 2000, “On the Problem of Obtaining Consistent Estimates from Multi-Patch Modal Tests,” Proc. ISMA 25, Leuven (B), Sept. 13–15, 2000, pp. 119–1126.

Figures

Grahic Jump Location
Stabilization chart obtained with the LSCE estimator (above) and with the proposed frequency-domain least-squares estimator (below)
Grahic Jump Location
Comparison between acceleration sensor and holographic measurement of CW-ESPI (upper:amplitude, lower: phase)
Grahic Jump Location
Stabilization diagram LSCE
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Stabilization diagram LSCF
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Summed FRF for different shaker location runs
Grahic Jump Location
LSCE stabilization diagram
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FDPI stabilization diagram
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LSCF stabilization diagram
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Comparison of measured and synthesized FRFs

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