Title :
Unknown input observability of decomposed systems consisting of algebraic and integrating parts
Author :
Cevik, M. K Külmiz ; Göknar, I. Cem
Author_Institution :
Fac. of Electr. & Electron. Eng., Tech. Univ. Istanbul, Turkey
fDate :
6/1/1996 12:00:00 AM
Abstract :
Observability of decomposed systems consisting of algebraic and integrating parts is investigated in the presence of unknown inputs. Conditions for the existence and construction of integrating subsystems which, when connected to the algebraic system, give rise to an unknown-input, unknown-state observable and unknown-input, zero-state observable composite system are established. Application of the results to fault detection and identification in algebraic systems is discussed
Keywords :
fault diagnosis; observability; uncertain systems; algebraic subsystem; composite system; decomposed system; fault detection; fault identification; integrating subsystem; unknown input observability; unknown-state; zero-state; Electrical fault detection; Fault diagnosis; Feedback; Interconnected systems; Joining processes; Linear systems; Matrix decomposition; Observability; Resistors; Sufficient conditions;
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
