TY - GEN
T1 - Quantitative fault estimation for a class of nonlinear systems
AU - Vijayaraghavan, K.
AU - Rajamani, R.
AU - Bokor, Jozsef
PY - 2006
Y1 - 2006
N2 - This paper develops a methodology for actuator fault diagnostics and quantitative estimation of fault signals in a class of nonlinear systems. The class of nonlinear systems considered is one in which the nonlinearity is an incremental quadratic type of nonlinearity that includes Lipschitz, positive real and sector nonlinear functions. The methodology provides for both state estimation and fault vector estimation. An LMI procedure can be utilized for explicit computation of the observer gains. The procedure developed can also be specialized to linear time invariant systems. Compared to previous results for LTI systems, the procedure developed herein does not require the LTI system to be minimum phase. The use of the developed methodology is demonstrated through an illustrative example of a real world physical application.
AB - This paper develops a methodology for actuator fault diagnostics and quantitative estimation of fault signals in a class of nonlinear systems. The class of nonlinear systems considered is one in which the nonlinearity is an incremental quadratic type of nonlinearity that includes Lipschitz, positive real and sector nonlinear functions. The methodology provides for both state estimation and fault vector estimation. An LMI procedure can be utilized for explicit computation of the observer gains. The procedure developed can also be specialized to linear time invariant systems. Compared to previous results for LTI systems, the procedure developed herein does not require the LTI system to be minimum phase. The use of the developed methodology is demonstrated through an illustrative example of a real world physical application.
UR - http://www.scopus.com/inward/record.url?scp=34047236259&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34047236259&partnerID=8YFLogxK
U2 - 10.1109/acc.2006.1657539
DO - 10.1109/acc.2006.1657539
M3 - Conference contribution
AN - SCOPUS:34047236259
SN - 1424402107
SN - 9781424402106
T3 - Proceedings of the American Control Conference
SP - 5147
EP - 5152
BT - Proceedings of the 2006 American Control Conference
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2006 American Control Conference
Y2 - 14 June 2006 through 16 June 2006
ER -