Acceleration Tracking Performance of the UCSD-NEES Shake Table
Publication: Journal of Structural Engineering
Volume 136, Issue 5
Abstract
The main objective of this paper is to investigate the tracking (signal reproduction) capability of the UCSD-NEES shake table system through a series of broadband and harmonic experiments with different tuning and test amplitudes. The second objective is to obtain quantitative relations between different measures of the signal reproduction error and the amplitude of the reference excitation used to tune the shake table controller. These relations can be used as guidelines in planning of future seismic tests on the UCSD-NEES shake table or on large shake tables with similar controllers. The third objective is to evaluate the effectiveness of the existing iterative correction/tuning procedure for the UCSD-NEES shake table. The final objective of the paper is to propose some improvements to the current shake table tuning practice.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The writers would like to thank Donald S. Morris, James Batti, Dan C. Radulescu, and Laurance T. Berman from the Englekirk Structural Engineering Center at Camp Elliot Field Station and Terry Nelson from MTS Systems Corporation for their contributions during the tests that produced the data used in this study. This work was supported by NEESinc through a NEES facility enhancement project. Any opinions, findings, and conclusions or recommendations expressed in this paper are those of the authors and do not necessarily reflect those of the sponsors.
References
Clark, A. (1983). “Sinusoidal and random motion analysis of mass loaded actuators and valves.” Proc., 39th Annual Meeting on National Conf. on Fluid Power, Vol. XXXVII, Los Angeles.
Conte, J. P., and Trombetti, T. L. (2000). “Linear dynamic modeling of a uniaxial servo-hydraulic shaking table system.” Earthquake Eng. Struct. Dyn., 29(9), 1375–1404.
Crewe, A. J. (1998). “The characterization and optimization of earthquake shaking table performance.” Ph.D. thesis, Univ. of Bristol.
Dyke, S. J., Spencer, B. J., Quast, P., and Sain, M. K. (1995). “Role of control-structure interaction in protective system design.” J. Eng. Mech., 121(2), 322–338.
Kusner, D. A., Rood, J. D., and Burton, G. W. (1992). “Signal reproduction fidelity of servohydraulic testing equipment.” Proc., 10th World Conf. on Earthquake Engineering, Rotterdam, The Netherlands, 2683–2688.
Ozcelik, O., Luco, E. J., Conte, J. P., Trombetti, T. L., and Restrepo, J. I. (2008). “Experimental characterization, modeling and identification of the UCSD-NEES shake table mechanical system.” Earthquake Eng. Struct. Dyn., 37, 243–264.
Thoen, B. K. (2004). 469D seismic digital control software, MTS.
Thoen, B. K., and Laplace, P. N. (2004). “Offline tuning of shaking table.” Proc. 13th World Conf. on Earthquake Engineering, Aug. 1–6, Vancouver, B.C., Paper No. 960.
Van Den Einde, L., et al. (2004). “Development of the George E. Brown Jr. network for earthquake engineering simulation (NEES) large high performance outdoor shake table at the University of California, San Diego.” Proc. 13th World Conf. on Earthquake Engineering, Aug. 1–6, Vancouver, B.C., Paper No. 3281.
Widrow, B., and Stearns, S. D. (1985). Adaptive signal processing, Prentice-Hall, Englewood Cliffs, N.J.
Williams, D. M., Williams, M. S., and Blakeborough, A. (2001). “Numerical modeling of a servohydraulic testing system for structures.” J. Eng. Mech., 127(8), 816–827.
Zhao, J., Shield, C., French, C., and Posbergh, T. (2005). “Nonlinear system modeling and velocity feedback compensation for effective force testing.” J. Eng. Mech., 131(3), 244–253.
Information & Authors
Information
Published In
Copyright
© 2010 ASCE.
History
Received: Sep 17, 2008
Accepted: Oct 24, 2009
Published online: Oct 29, 2009
Published in print: May 2010
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.