Title :
Comments on "An asymptotic modal observer for linear autonomous time lag systems" [with reply]
Author :
Trinh, Hieu ; Aldeen, M. ; Leyva-Ramos, J. ; Pearson, A.
Author_Institution :
Dept. of Electr. & Electron. Eng., Melbourne Univ., Parkville, Vic., Australia
fDate :
5/1/1997 12:00:00 AM
Abstract :
It is show that the proof of theorem 1 in the original paper of J. Leyva-Ramos and A.E. Pearson (ibid., vol. 40, p. 1291-4, 1995) is incomplete and that the state observer scheme results in steady-state error. Alternatively, a memoryless state observer for linear time-delay systems is provided. The original authors acknowledge that the criticism is correct, and suggest an alternative way of overcoming the problem.
Keywords :
delay systems; errors; observers; asymptotic modal observer; linear autonomous time lag systems; memoryless state observer; state observer scheme; steady-state error; Control systems; Delay effects; Delay systems; Eigenvalues and eigenfunctions; Error correction; Linear systems; Observers; State estimation; Steady-state; Vectors;
Journal_Title :
Automatic Control, IEEE Transactions on
