Online input, state, and response estimation for building structures under earthquakes using limited acceleration measurements

Sdiq Anwar Taher; Jian Li; Huazhen Fang

doi:10.1117/12.2557712

18 May 2020 Online input, state, and response estimation for building structures under earthquakes using limited acceleration measurements

Sdiq Anwar Taher, Jian Li, Huazhen Fang

Author Affiliations +

Proceedings Volume 11379, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2020; 1137908 (2020) https://doi.org/10.1117/12.2557712
Event: SPIE Smart Structures + Nondestructive Evaluation, 2020, Online Only

Abstract

This paper proposes online input, state, and response estimation based on Augmented Kalman filter for systems without direct feedthrough, such as earthquake-excited building structures with absolute floor acceleration measurements. Measurement noise, modelling error, and incomplete absolute acceleration measurement are considered. The system model in this case lacks direct feedthrough, resulting in weak observability of system input, for which a small uncertainty in the model and measurement data would lead to a drastic change in the estimation. The augmented state Kalman filter for system without direct feedthrough is proposed for earthquake-excited building structures, in which the input with known variance is augmented with states in order to estimate them together. Compared with unbiased minimum-variance input and state estimation methods that make no assumption of input, the proposed online approach is able to perform robust estimation of states, input, and responses at unmeasured locations successfully using only a limited number of absolute acceleration measurements.

Conference Presentation

Citation Download Citation

Sdiq Anwar Taher, Jian Li, and Huazhen Fang "Online input, state, and response estimation for building structures under earthquakes using limited acceleration measurements", Proc. SPIE 11379, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2020, 1137908 (18 May 2020); https://doi.org/10.1117/12.2557712

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available