Title :
A memoryless state observer for discrete time-delay systems
Author :
Trinh, H. ; Aldeen, M.
Author_Institution :
Dept. of Electr. & Electron. Eng., Melbourne Univ., Parkville, Vic., Australia
fDate :
11/1/1997 12:00:00 AM
Abstract :
This paper presents a reduced-order memoryless state observer with a γ-stability margin (0<γ<1) for linear discrete-time systems with multiple delays in both the state and control vectors. The dynamics of the observer are derived from a set of unstable and/or poorly damped eigenvalues of the system. A simple and systematic design method is presented. A numerical example is given to illustrate the properties of the new observer and its design method
Keywords :
delay systems; discrete time systems; eigenvalues and eigenfunctions; memoryless systems; observers; stability criteria; γ-stability margin; discrete time-delay systems; linear discrete-time systems; poorly damped eigenvalues; reduced-order memoryless state observer; unstable eigenvalues; Control systems; Delay estimation; Delay lines; Delay systems; Design engineering; Design methodology; Eigenvalues and eigenfunctions; Observers; State estimation; Vectors;
Journal_Title :
Automatic Control, IEEE Transactions on
