Optical motion tracking in earthquake-simulation shake table testing: preliminary results

Authors:
Paul Rodríguez
Affiliations:
Department of Electrical Engineering, Pontificia Universidad Católica del Perú, Lima, Peru
Venue:
Asilomar'09 Proceedings of the 43rd Asilomar conference on Signals, systems and computers
Year:
2009

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Abstract

Sensors such accelerometers and displacement transducers are generally used in earthquake-simulation shake table testing to measure the induced motions. In particular the Anti-seismic Structure Laboratory at the Pontificia Universidad Católica del Perú (PUCP) uses LVDT (linear variable differential transformer) sensors, which can achieve accurate measurements. However there are limitations in the number of measuring points; moreover, the required instrumentation is demanding and destructive tests can not be measured with such devices. We present the preliminary results of an optical motion tracking system to measure the induced motions for shake table testing at the PUCP's Anti-seismic Structure Laboratory.