TY - GEN
T1 - ARMarkov observers for structural damage detection
AU - Dharap, P.
AU - Koh, B. H.
AU - Nagarajaiah, S.
PY - 2006
Y1 - 2006
N2 - A new method based on a bank of ARMarkov observers is proposed to determine extent of damage. The objective of the paper is to present a new formulation using predesigned set of ARMarkov observers to determine the extent of damage and track further changes in the stiffness of the damaged member. The primary advantages of the proposed formulation over existing methods are: (1) ARMarkov observers are designed based on interaction matrix formulation, so that knowledge about exact initial conditions is not necessary, and (2) noise statistics are not required apriori to design a bank of ARMarkov observers when compared to a bank of Kalman filters. It is shown that the proposed method works well with noisy output measurements and Sensitivity Enhancement Control (SEC) can be easily incorporated into the proposed method. Simulation results of several examples including a planar truss structure with progressive damage in a member are presented.
AB - A new method based on a bank of ARMarkov observers is proposed to determine extent of damage. The objective of the paper is to present a new formulation using predesigned set of ARMarkov observers to determine the extent of damage and track further changes in the stiffness of the damaged member. The primary advantages of the proposed formulation over existing methods are: (1) ARMarkov observers are designed based on interaction matrix formulation, so that knowledge about exact initial conditions is not necessary, and (2) noise statistics are not required apriori to design a bank of ARMarkov observers when compared to a bank of Kalman filters. It is shown that the proposed method works well with noisy output measurements and Sensitivity Enhancement Control (SEC) can be easily incorporated into the proposed method. Simulation results of several examples including a planar truss structure with progressive damage in a member are presented.
UR - http://www.scopus.com/inward/record.url?scp=84890654297&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84890654297
SN - 0415396506
SN - 9780415396509
T3 - Structural Health Monitoring and Intelligent Infrastructure - Proceedings of the 2nd International Conference on Structural Health Monitoring of Intelligent Infrastructure, SHMII 2005
SP - 219
EP - 228
BT - Structural Health Monitoring and Intelligent Infrastructure - Proceedings of the 2nd International Conference on Structural Health Monitoring of Intelligent Infrastructure, SHMII 2005
T2 - 2nd International Conference on Structural Health Monitoring of Intelligent Infrastructure, SHMII 2005
Y2 - 16 November 2005 through 18 November 2005
ER -