Nonlinear structural identification based on H infinity filter algorithm

Tadanobu Sato; Kai Qi

doi:10.1117/12.350090

4 June 1999 Nonlinear structural identification based on H ∞ filter algorithm

Tadanobu Sato, Kai Qi

Proceedings Volume 3667, Smart Structures and Materials 1999: Mathematics and Control in Smart Structures; (1999) https://doi.org/10.1117/12.350090
Event: 1999 Symposium on Smart Structures and Materials, 1999, Newport Beach, CA, United States

Abstract

Dynamic behaviors of a 1-story and 4-story steel structures subject to multi-dimensional ground motion excitations were experimentally investigated by using a shaking table. Linear and nonlinear structural responses were obtained as observation data for the identification. Dynamics characteristics of the model structures were identified using the adaptive H_(infinity ) filter, which was developed for identifying structural systems with non-stationary dynamic characteristics by adding the function of memory fading (forgetting factor) for past observation data to the H_(infinity ) filter. Identification results show that the H_(infinity ) filtering technique are very efficient for identifying linear and nonlinear structural systems. Especially, the nonlinear behavior of the model can be traced effectively.

Citation Download Citation

Tadanobu Sato and Kai Qi "Nonlinear structural identification based on H ∞ filter algorithm", Proc. SPIE 3667, Smart Structures and Materials 1999: Mathematics and Control in Smart Structures, (4 June 1999); https://doi.org/10.1117/12.350090

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