Title :
Disturbance decoupled functional observers
Author :
Hou, M. ; Pugh, A.C. ; Müller, P.C.
Author_Institution :
Dept. of Safety Control Eng., Wuppertal Univ., Germany
fDate :
2/1/1999 12:00:00 AM
Abstract :
If a state observer does not exist, it is possible to design a functional observer. Principally, this is also true for systems with unknown inputs (termed as disturbances). Necessary and sufficient conditions for the existence of disturbance decoupled functional observers for linear time-invariant systems are provided. A method for designing such observers is given. The analysis and design are based on a matrix pencil approach. The design can also be used to obtain functional observers for descriptor systems with or without unknown inputs
Keywords :
control system synthesis; linear systems; matrix algebra; observers; descriptor systems; disturbance decoupling; functional observers; linear time-invariant systems; matrix pencil; necessary conditions; state observer; sufficient conditions; Control engineering; Design methodology; Fault diagnosis; Guidelines; Matrices; Observers; Safety; Stability; State estimation; Sufficient conditions;
Journal_Title :
Automatic Control, IEEE Transactions on
